{"title":"Tune-Up Parts","description":"\u003csection class=\"mm-lean-collection\" aria-label=\"Tune-Up Parts\"\u003e\n\u003cp class=\"mm-lean-intro\"\u003eMarine tune-up parts and service items for ignition maintenance and routine engine care.\u003c\/p\u003e\n\u003ca class=\"mm-lean-shop\" href=\"#mm-shop-products\"\u003eShop all products ↓\u003c\/a\u003e\n\u003cnav class=\"mm-lean-links\" aria-label=\"Explore collections\"\u003e\n\u003ca href=\"\/collections\/spark-plugs-ignition-parts\"\u003eSpark Plugs \u0026amp; Ignition \u003cspan aria-hidden=\"true\"\u003e→\u003c\/span\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/tune-up-kits\"\u003eTune-Up Kits \u003cspan aria-hidden=\"true\"\u003e→\u003c\/span\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/oem-service-kits\"\u003eOEM Service Kits \u003cspan aria-hidden=\"true\"\u003e→\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/nav\u003e\n\u003cdiv class=\"mm-lean-help\"\u003e\n\u003ca href=\"\/pages\/how-to-find-the-right-marine-engine-part\"\u003eEngine parts guide ↗\u003c\/a\u003e\u003ca href=\"\/pages\/marisol-parts-desk\"\u003eNeed help? Ask our Parts Desk ↗\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv id=\"mm-shop-products\" aria-label=\"Shop all products\"\u003e\u003c\/div\u003e\n\u003cstyle\u003e\n.collection--description:has(.mm-lean-collection){max-width:none;width:100%;margin:0;padding:0;border:0;background:#fff}\n.productgrid--masthead:has(.mm-lean-collection){padding-bottom:12px;margin-bottom:12px;border:0;background:#fff}\n.productgrid--masthead:has(.mm-lean-collection) .collection--title{margin:0 0 12px;font-size:clamp(26px,3vw,36px);line-height:1.15;color:#183341}\n.mm-lean-collection{max-width:1100px;margin:0;padding:0;color:#183341;background:#fff;text-align:left}\n.mm-lean-collection *{box-sizing:border-box}\n.mm-lean-collection .mm-lean-intro{margin:0 0 16px;font-size:16px;line-height:1.5;color:#52636c}\n.mm-lean-collection a{text-decoration:none;box-shadow:none}\n.mm-lean-collection .mm-lean-shop{display:inline-flex;align-items:center;min-height:44px;margin:0 0 18px;padding:10px 18px;border-radius:4px;background:#153f57;color:#fff;font-size:15px;font-weight:600}\n.mm-lean-collection .mm-lean-shop:hover{background:#0b557b;color:#fff}\n.mm-lean-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:0}\n.mm-lean-collection .mm-lean-links a{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:46px;padding:11px 13px;border:1px solid #dbe2e6;border-radius:4px;color:#164b69;background:#fff;font-size:14px;line-height:1.4}\n.mm-lean-collection .mm-lean-links a:hover{background:#edf4f7;border-color:#b5cbd6}\n.mm-lean-help{display:flex;flex-wrap:wrap;gap:4px 24px;margin-top:8px}\n.mm-lean-collection .mm-lean-help a{display:inline-flex;align-items:center;min-height:44px;color:#164b69;font-size:13px}\n.mm-lean-collection .mm-lean-help a:hover{text-decoration:underline}\n.mm-lean-collection a:focus-visible{outline:2px solid #16729b;outline-offset:3px}\n#mm-shop-products{height:1px;scroll-margin-top:180px}\n@media(max-width:719px){.mm-lean-links{grid-template-columns:repeat(2,minmax(0,1fr))}.mm-lean-collection .mm-lean-intro{font-size:15px}.mm-lean-help{gap:0 16px}}\n\n.mm-lean-heading{margin:0 0 12px!important;font-size:clamp(26px,3vw,36px)!important;line-height:1.15!important;color:#183341!important}\n.mm-lean-empty nav#mm-shop-products{height:auto;scroll-margin-top:180px}\n\u003c\/style\u003e","products":[{"product_id":"fairview-147","title":"NGK V-Power Spark Plug - LFR5A-11","description":"\u003cp\u003eThe \u003cstrong\u003eNGK LFR5A-11\u003c\/strong\u003e is a V-Power nickel spark plug used in select marine four-stroke outboards, personal watercraft, small engines, and automotive applications where the engine manufacturer specifies this exact plug number. NGK stock number \u003cstrong\u003e6376\u003c\/strong\u003e features a long-reach 14 mm shell, projected-style firing end, and factory-set \u003cstrong\u003e1.1 mm \/ 0.044 in.\u003c\/strong\u003e gap as indicated by the \u003cstrong\u003e\"-11\"\u003c\/strong\u003e suffix.\u003c\/p\u003e\n\u003cp\u003eThis plug should be installed only where the engine service manual, ignition label, or parts chart specifically calls for \u003cstrong\u003eNGK LFR5A-11 \/ 6376\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine NGK V-Power spark plug.\u003c\/li\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eLFR5A-11\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eNGK stock number: \u003cstrong\u003e6376\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eV-groove center electrode design to help position the spark at the electrode edge.\u003c\/li\u003e\n\u003cli\u003eNickel-alloy firing-end construction for standard service applications.\u003c\/li\u003e\n\u003cli\u003eThread size: \u003cstrong\u003e14 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThread reach: \u003cstrong\u003e26.5 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e5\/8 in. \/ 16 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e5\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFactory preset gap: \u003cstrong\u003e0.044 in. \/ 1.1 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCommonly used in select Yamaha and Mercury four-stroke outboard applications where specified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon marine application context includes select four-stroke outboards where the factory service chart calls for \u003cstrong\u003eNGK LFR5A-11\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect \u003cstrong\u003eYamaha FourStroke\u003c\/strong\u003e outboards where specified\u003c\/li\u003e\n\u003cli\u003eSelect Yamaha \u003cstrong\u003eF75 \/ F90 \/ F115 \/ F150\u003c\/strong\u003e application groups where the service chart calls for this plug\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eMercury FourStroke\u003c\/strong\u003e outboards where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003e75 HP through 150 HP four-stroke\u003c\/strong\u003e marine applications where the factory plug chart calls for \u003cstrong\u003eLFR5A-11\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSelect automotive and powersport applications that specify NGK \u003cstrong\u003eLFR5A-11 \/ 6376\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this spark plug only where the engine manufacturer's plug chart specifically lists \u003cstrong\u003eLFR5A-11\u003c\/strong\u003e or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by engine model, model year, serial number, service manual, and factory spark plug chart before ordering. Spark plugs with the same thread size can still differ in reach, heat range, projected tip design, electrode style, resistor specification, and required gap. Installing the wrong plug can cause misfire, hard starting, poor idle, piston contact, thread damage, overheating, or ignition-system issues.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plugs during scheduled tune-up service or whenever plugs are fouled, worn, fuel-soaked, oil-contaminated, damaged, corroded, or causing hard starting, rough idle, hesitation, misfire, poor acceleration, or reduced top-end performance. Marine engines that idle frequently, troll for long periods, or operate in humid\/salt environments may require more frequent inspection.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCheck the plug number against the engine service chart before installation. Inspect the plug gap and adjust only if the engine manufacturer requires a different setting. Install into clean, undamaged cylinder head threads and tighten to the engine manufacturer's torque specification. Avoid over-tightening in aluminum cylinder heads. Apply anti-seize only if the engine or spark plug manufacturer's service procedure calls for it, as added lubricant can change torque loading.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK LFR5A-11\u003c\/strong\u003e — plug part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK 6376\u003c\/strong\u003e — stock number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLFR5A11\u003c\/strong\u003e — alternate catalog formatting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLFR5A-11 V-Power\u003c\/strong\u003e — product style reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSpark plug fitment should always be matched by the exact plug number and engine service chart, not just by horsepower or thread size. The \u003cstrong\u003eLFR5A-11\u003c\/strong\u003e is a long-reach plug with a specific heat range and factory gap, so it should not be substituted with a similar-looking 14 mm plug unless the manufacturer's chart confirms the replacement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"FVW","offers":[{"title":"Default Title","offer_id":43563799183396,"sku":"LFR5A11","price":16.84,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/e6c1d67b-3683-4b41-a4ac-bb0e5f867481.png?v=1781195948"},{"product_id":"fairview-225","title":"V-POWER, SPARK PLUG","description":"V-POWER, SPARK PLUG","brand":"FVW","offers":[{"title":"Default Title","offer_id":43563802460196,"sku":"TR5-2238","price":6.84,"currency_code":"CAD","in_stock":false}]},{"product_id":"ngk","title":"NGK Iridium IX Spark Plug - BPR5EIX","description":"\u003cp\u003eThe \u003cstrong\u003eNGK BPR5EIX\u003c\/strong\u003e is an Iridium IX spark plug designed as a premium replacement for engines that specify the \u003cstrong\u003eBPR5EIX \/ NGK 95525\u003c\/strong\u003e plug profile. It uses a fine-wire iridium center electrode for strong ignition performance, improved ignitability, and better resistance to fouling compared with a standard nickel plug in compatible applications.\u003c\/p\u003e\n\u003cp\u003eThis plug should be installed only where the engine, vehicle, or equipment manufacturer specifically lists \u003cstrong\u003eNGK BPR5EIX\u003c\/strong\u003e, \u003cstrong\u003eNGK 95525\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine NGK Iridium IX spark plug.\u003c\/li\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eBPR5EIX\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eNGK stock number: \u003cstrong\u003e95525\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003ePremium fine-wire iridium center electrode design.\u003c\/li\u003e\n\u003cli\u003eProjected insulator nose.\u003c\/li\u003e\n\u003cli\u003eResistor-style spark plug.\u003c\/li\u003e\n\u003cli\u003eSolid terminal configuration.\u003c\/li\u003e\n\u003cli\u003eThread diameter: \u003cstrong\u003e14 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThread reach: \u003cstrong\u003e19 mm \/ 3\/4 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e13\/16 in. \/ 21 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e5\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFactory preset gap: \u003cstrong\u003e0.032 in. \/ 0.8 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCommon upgrade reference for applications that originally specify the standard \u003cstrong\u003eNGK BPR5ES\u003c\/strong\u003e profile, when confirmed by the engine application chart.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select classic automotive, powersports, ATV, utility, and small-engine applications where the factory chart calls for \u003cstrong\u003eNGK BPR5EIX \/ 95525\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect classic automotive engines where specified\u003c\/li\u003e\n\u003cli\u003eSelect powersports and ATV engines where specified\u003c\/li\u003e\n\u003cli\u003eSelect utility vehicle applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect small-engine applications where the manufacturer calls for the BPR5EIX plug profile\u003c\/li\u003e\n\u003cli\u003eApplications that accept \u003cstrong\u003eBPR5ES-style\u003c\/strong\u003e plug geometry only when the manufacturer confirms \u003cstrong\u003eBPR5EIX\u003c\/strong\u003e as an approved iridium replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this spark plug only where the equipment manufacturer's plug chart specifically calls for \u003cstrong\u003eBPR5EIX\u003c\/strong\u003e, \u003cstrong\u003e95525\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by exact year, make, model, engine, service manual, and factory spark plug chart before ordering. Spark plugs with the same thread diameter can still differ in reach, heat range, terminal style, projected-tip design, resistor specification, electrode material, and required gap. Installing the wrong plug can cause hard starting, misfire, poor idle, overheating, thread damage, piston contact, or ignition-system problems.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plugs during scheduled tune-up service or when the plug is fouled, worn, oil-contaminated, fuel-soaked, corroded, cracked, damaged, or causing hard starting, hesitation, rough idle, misfire, poor throttle response, or reduced power. Engines that idle frequently, operate under heavy load, or run in damp environments should have plugs inspected more regularly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCheck the plug number and gap against the equipment manufacturer's service chart before installation. If gap adjustment is required, use the correct gapping tool and avoid prying directly against the fine iridium center electrode. Install into clean, undamaged cylinder head threads and tighten to the manufacturer's torque specification. Avoid adding anti-seize unless the engine or plug manufacturer specifically calls for it, as lubricant can change the clamping load and increase the risk of over-tightening.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK BPR5EIX\u003c\/strong\u003e — spark plug part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK 95525\u003c\/strong\u003e — NGK stock number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBPR5EIX 95525\u003c\/strong\u003e — common catalog reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBPR5ES\u003c\/strong\u003e — standard nickel plug profile reference only; verify approved upgrade compatibility before substitution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBPR5EIX\u003c\/strong\u003e is not the same profile as long-reach marine plugs such as LFR-series plugs. It uses a shorter \u003cstrong\u003e19 mm \/ 3\/4 in.\u003c\/strong\u003e reach and larger \u003cstrong\u003e13\/16 in.\u003c\/strong\u003e hex, so it should be matched by exact plug number rather than by brand or heat range alone. For marine, powersports, or classic-engine use, always confirm the plug chart before installing an iridium upgrade.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"FVW","offers":[{"title":"Default Title","offer_id":43563804065828,"sku":"95525","price":20.86,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/31b2ef7f-059d-4cfd-886c-6a34164fa60e.png?v=1781199315"},{"product_id":"kimpex-1","title":"NGK — BPR6EFS Standard Marine Spark Plug — 901421","description":"\u003ch2\u003eNGK BPR6EFS Standard Marine Spark Plug — Stock No. 3623\u003c\/h2\u003e\u003cp\u003eThe NGK BPR6EFS is a standard marine spark plug for verified gasoline inboard and sterndrive applications. Its copper core supports heat dissipation, while the corrosion-resistant trivalent metal plating and high-strength ceramic insulator are designed for dependable marine ignition service. Confirm the exact engine model and serial number before ordering.\u003c\/p\u003e\u003ch3\u003ePart Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e NGK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK Part Number:\u003c\/strong\u003e BPR6EFS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK Stock Number:\u003c\/strong\u003e 3623\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury\/Quicksilver Reference:\u003c\/strong\u003e 816336Q\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Standard marine spark plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Diameter:\u003c\/strong\u003e 14.0 mm \/ 0.551 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length:\u003c\/strong\u003e 17.5 mm \/ 0.689 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSocket Size:\u003c\/strong\u003e 16 mm \/ approximately 5\/8 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK Reference Gap:\u003c\/strong\u003e 0.8 mm \/ approximately 0.032 in\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 3.0L \/ 181 CID:\u003c\/strong\u003e From serial 0L010042\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 4.3L Gen+:\u003c\/strong\u003e From serial 0L010065\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 4.3L EFI Gen+:\u003c\/strong\u003e From serial 0L012009\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 5.0L EFI Gen+:\u003c\/strong\u003e From serial 0L015751\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 5.7L EFI Gen+:\u003c\/strong\u003e From serial 0L010035\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 5.7L Gen+:\u003c\/strong\u003e From serial 0L010037\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 350 MAG MPI Gen+:\u003c\/strong\u003e Including serial range 0L002600–0L309999\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 7.4L MPI:\u003c\/strong\u003e From serial 0L002006\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolvo Penta:\u003c\/strong\u003e 4.3L Gi EFI, 4.3L GL 2-barrel, 5.0L Fi, 5.7L GSi Gen 1+, 5.8L FSi EFI HO, and 7.4L Gi L29\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditional marine applications:\u003c\/strong\u003e Selected OMC, Indmar, and Marine Power gasoline engines\u003c\/li\u003e\n\u003cli\u003eAlways confirm the engine model and serial number in the engine owner's manual before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper-core construction:\u003c\/strong\u003e Promotes effective heat dissipation in marine gasoline engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-resistant plating:\u003c\/strong\u003e Trivalent metal plating helps resist corrosion and thread seizure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable insulator:\u003c\/strong\u003e High-strength alumina-silicate ceramic supports reliable ignition performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple-seal design:\u003c\/strong\u003e Helps protect the plug's internal construction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemovable terminal:\u003c\/strong\u003e Supports the applicable marine ignition connection.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplacement and Installation Guidance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplace spark plugs according to the engine manufacturer's maintenance schedule or when inspection shows electrode wear, fouling, corrosion, a damaged insulator, or an incorrect gap.\u003c\/li\u003e\n\u003cli\u003eHard starting, ignition misfire, and rough running can indicate that the plugs and ignition system need inspection.\u003c\/li\u003e\n\u003cli\u003eFor engines using multiple plugs, replacing the complete set together helps maintain consistent ignition performance.\u003c\/li\u003e\n\u003cli\u003eCheck the required gap against the engine manufacturer's specification before installation, even when the plugs are supplied pre-gapped for an applicable application.\u003c\/li\u003e\n\u003cli\u003eUse the correct spark-plug socket and follow the engine manufacturer's tightening procedure.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs BPR6EFS compatible with every 3.0L, 4.3L, 5.0L, 5.7L, or 7.4L marine engine?\u003c\/strong\u003e No. Engine generation, ignition system, and serial number can change the required spark plug.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the reference spark gap?\u003c\/strong\u003e NGK lists 0.8 mm \/ approximately 0.032 in for the applicable marine applications shown.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs 816336Q the same plug?\u003c\/strong\u003e Mercury\/Quicksilver 816336Q is the listed OEM reference for the BPR6EFS standard spark plug. Confirm it against the exact engine before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShould the full set be replaced together?\u003c\/strong\u003e For engines using multiple plugs, replacing the complete set together helps keep ignition performance consistent across cylinders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo I need to check the gap before installation?\u003c\/strong\u003e Yes. Confirm the engine manufacturer's required gap before fitting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest use case:\u003c\/strong\u003e Verified marine gasoline inboard and sterndrive applications that call for NGK BPR6EFS or the 816336Q reference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon issue:\u003c\/strong\u003e Matching by engine displacement alone can lead to the wrong plug. Generation and serial number are essential for fitment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation reminder:\u003c\/strong\u003e Check the required gap, use the correct socket, and follow the engine manufacturer's tightening procedure.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KIMPEX","offers":[{"title":"Default Title","offer_id":43563816353828,"sku":"901421","price":7.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/eab8a462-591e-49ea-bf80-b6e5541c383f.png?v=1789763784"},{"product_id":"lns-131","title":"NGK Spark Plug - BR6HS","description":"\u003cp\u003eThe \u003cstrong\u003eNGK BR6HS\u003c\/strong\u003e is a standard resistor spark plug used in select marine outboards, powersports engines, small engines, vintage vehicles, and utility equipment where the manufacturer specifies the \u003cstrong\u003eBR6HS \/ NGK 3922\u003c\/strong\u003e plug profile. It uses copper-core nickel construction, a built-in resistor, a short-reach 14 mm body, and a flat\/gasket-seat design for dependable ignition service in compatible engines.\u003c\/p\u003e\n\u003cp\u003eThis plug should be installed only where the engine service manual, equipment label, or factory application chart specifically calls for \u003cstrong\u003eNGK BR6HS\u003c\/strong\u003e, \u003cstrong\u003eNGK 3922\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine NGK standard spark plug.\u003c\/li\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eBR6HS\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eNGK stock number: \u003cstrong\u003e3922\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCopper-core nickel construction for standard service applications.\u003c\/li\u003e\n\u003cli\u003eBuilt-in resistor to help reduce ignition-related RFI noise.\u003c\/li\u003e\n\u003cli\u003eThread diameter: \u003cstrong\u003e14 mm \/ M14 x 1.25\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThread reach: \u003cstrong\u003e12.7 mm \/ 1\/2 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e13\/16 in. \/ 21 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSeat style: \u003cstrong\u003eflat \/ gasket seat\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eTip style: \u003cstrong\u003enon-projected\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e6\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFactory preset gap reference: \u003cstrong\u003e0.028 in. \/ 0.7 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eTerminal style: \u003cstrong\u003eremovable terminal nut \/ threaded stud\u003c\/strong\u003e, depending on ignition boot requirement.\u003c\/li\u003e\n\u003cli\u003eDistributor catalog formatting may appear as \u003cstrong\u003e41-3922\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select engines and equipment where the factory plug chart calls for \u003cstrong\u003eNGK BR6HS \/ 3922\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect small-to-mid range \u003cstrong\u003etwo-stroke marine outboards\u003c\/strong\u003e where specified.\u003c\/li\u003e\n\u003cli\u003eSelect Mercury, Yamaha, Suzuki, Johnson, Evinrude, OMC, Chrysler, and Clinton marine applications where the plug chart confirms BR6HS.\u003c\/li\u003e\n\u003cli\u003eSelect powersports, snowmobile, ATV, and personal watercraft applications where specified.\u003c\/li\u003e\n\u003cli\u003eSelect vintage automotive and specialty-engine applications requiring a short-reach 14 mm resistor plug.\u003c\/li\u003e\n\u003cli\u003eSelect small utility engines and equipment where the manufacturer lists the BR6HS plug profile.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this plug only where the manufacturer's application chart lists \u003cstrong\u003eBR6HS\u003c\/strong\u003e, \u003cstrong\u003e3922\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by exact engine brand, model, horsepower, serial number, model year, service manual, and spark plug chart before ordering. Spark plugs with the same 14 mm thread diameter can still differ in reach, heat range, seat style, terminal type, resistor design, projection, and required gap. Installing the wrong plug can cause hard starting, misfire, poor idle, overheating, thread damage, piston contact, or ignition-system issues.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plugs during scheduled tune-up service or whenever the plug is worn, fouled, fuel-soaked, oil-contaminated, cracked, corroded, damaged, or causing hard starting, rough idle, hesitation, misfire, weak acceleration, or poor throttle response. Marine outboards and seasonal equipment should have plugs inspected regularly because long idle time, old fuel, oil mixture, moisture, and storage can accelerate fouling.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCheck the plug number and required gap before installation. Install into clean, undamaged cylinder head threads and tighten to the engine manufacturer's torque specification for the exact engine. Because this is a gasket-seat plug, confirm the sealing washer is present and seated correctly.\u003c\/p\u003e\n\u003cp\u003eAvoid adding anti-seize unless the engine or spark plug manufacturer specifically calls for it, as thread lubricant can change clamping load and increase the risk of over-tightening. Confirm whether the ignition lead requires the removable terminal nut installed or removed before fitting the spark plug boot.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK BR6HS\u003c\/strong\u003e — spark plug part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK 3922\u003c\/strong\u003e — NGK stock number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK stk 3922\u003c\/strong\u003e — catalog stock-number reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e41-3922\u003c\/strong\u003e — powersports\/marine distributor catalog formatting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 33813472\u003c\/strong\u003e — marine reference; verify by engine serial number and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOMC 503949\u003c\/strong\u003e — marine reference; verify by engine model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOMC 503950\u003c\/strong\u003e — marine reference; verify by engine model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOMC 504082\u003c\/strong\u003e — marine reference; verify by engine model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuzuki 09482-00088\u003c\/strong\u003e — cross-reference; verify by model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYamaha 94701-00248\u003c\/strong\u003e — cross-reference; verify by model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDenso W20FSR \/ W20FSR-U\u003c\/strong\u003e — cross-reference; verify by application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChampion QL86C \/ RL86C\u003c\/strong\u003e — cross-reference; verify by application\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBR6HS\u003c\/strong\u003e is a short-reach, gasket-seat resistor plug. It should not be confused with longer-reach \u003cstrong\u003eBR6ES\u003c\/strong\u003e-style plugs or wider-gap \u003cstrong\u003eBR6HS-10\u003c\/strong\u003e variants. Match the exact plug number, reach, gap, heat range, and terminal setup to the engine's service chart before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":43563827527716,"sku":"41-3922","price":6.79,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/a3fa20ce-7e59-4e75-b3b0-22dc6435f180.png?v=1781212670"},{"product_id":"merc-112","title":"Mercury MerCruiser Quicksilver Ignition Key 126 | 30431126 | OEM Key Code 126","description":"\u003ch2\u003ePart Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 30431126\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury Marine \/ Quicksilver (Genuine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial Product Type:\u003c\/strong\u003e Ignition Key — Key Code 126\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey Number Stamped:\u003c\/strong\u003e 126\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey Series:\u003c\/strong\u003e Mercury 30431 \/ 89491 ignition key series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Ignition \/ Electrical — Ignition Switch Key\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN \/ UPC:\u003c\/strong\u003e 745061134195\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (approx.):\u003c\/strong\u003e 1.65 in. × 0.80 in. × 0.08 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (approx.):\u003c\/strong\u003e ~5 g \/ ~0.01 lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat This Part Is\u003c\/h2\u003e\n\u003cp\u003eThis is the genuine OEM Mercury \/ Quicksilver replacement ignition key stamped \u003cstrong\u003e126\u003c\/strong\u003e, part number \u003cstrong\u003e30431126\u003c\/strong\u003e. It is part of the Mercury 30431 ignition key series and is used wherever the ignition switch or key chart specifies key code \u003cstrong\u003e126\u003c\/strong\u003e. Match by the number stamped on the original key or the key code shown in the ignition switch parts diagram — not by engine model or horsepower.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cp\u003eThis key is matched by \u003cstrong\u003eignition key code 126\u003c\/strong\u003e, not by engine displacement or drive model. It is compatible with Mercury and MerCruiser ignition switches in the \u003cstrong\u003e30431\u003c\/strong\u003e and \u003cstrong\u003e89491\u003c\/strong\u003e series that specify key number 126. Verify the required key code from:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe number stamped on the existing key\u003c\/li\u003e\n\u003cli\u003eThe ignition switch key chart in the Mercury parts diagram for your vessel’s electrical or remote control group\u003c\/li\u003e\n\u003cli\u003eThe stamped key-code reference on the ignition switch housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Code Notice\u003c\/h2\u003e\n\u003cp\u003eThe 30431 series covers key codes \u003cstrong\u003e123 through 134\u003c\/strong\u003e (part numbers 30431123 through 30431134). Each key code is unique to its switch — only the correct stamped number will operate the switch. Do not order by engine serial number or vessel model alone; always confirm the key code first.\u003c\/p\u003e\n\n\u003ch2\u003eWhen This Part Needs Replacement\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOriginal key is lost\u003c\/li\u003e\n\u003cli\u003eKey is bent, cracked, or worn\u003c\/li\u003e\n\u003cli\u003eKey no longer turns the ignition switch smoothly\u003c\/li\u003e\n\u003cli\u003eA spare key is needed for the vessel or emergency access\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNo mechanical installation required — insert the key into the ignition switch and test before use\u003c\/li\u003e\n\u003cli\u003eConfirm the ignition switch is coded for key \u003cstrong\u003e126\u003c\/strong\u003e before ordering\u003c\/li\u003e\n\u003cli\u003eDo not force the key if it does not turn smoothly — the switch may require a different key code or the ignition cylinder may be worn\u003c\/li\u003e\n\u003cli\u003eKeep a spare key in a secure, accessible location on board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCross-Reference Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury \/ Quicksilver:\u003c\/strong\u003e 30431126\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey stamped:\u003c\/strong\u003e 126\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey series:\u003c\/strong\u003e 30431 \/ 89491\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelated key codes in same series:\u003c\/strong\u003e 123, 124, 125, 127, 128, 129, 130, 131, 132, 133, 134 — confirm your exact code before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Parts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrowse \u003ca href=\"\/collections\/spark-plugs-ignition-parts\"\u003eSpark Plugs \u0026amp; Ignition Parts\u003c\/a\u003e for Mercury and MerCruiser ignition components\u003c\/li\u003e\n\u003cli\u003eBrowse \u003ca href=\"\/collections\/mercruiser-parts\"\u003eMerCruiser Marine Engine Parts\u003c\/a\u003e for the full Mercury \/ MerCruiser catalog\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e The most common reason this key is ordered is a lost original — it is also a good idea to keep a spare on board for any vessel where access to the ignition is time-sensitive. Because the price point is low, ordering a second key at the same time as the first is always worth considering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon issue:\u003c\/strong\u003e The most frequent ordering mistake is selecting a key without confirming the stamped key code. The 30431 series covers multiple key codes that look identical but operate different ignition cylinders. Always read the number stamped on the existing key or reference the Mercury key chart for the ignition switch. If the original key is already lost, the key code is usually stamped on the ignition switch housing or available through the vessel’s Mercury parts diagram.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563842961444,"sku":"30431126","price":6.85,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/81b784a4-48ee-4963-9a46-ed515bd15952.png?v=1777589984"},{"product_id":"merc-842","title":"Mercury MerCruiser Spark Plug Wire Set 863656A1","description":"\u003ch2 data-section-id=\"aowabi\" data-start=\"0\" data-end=\"70\"\u003eMercury \/ MerCruiser Quicksilver \u003cstrong data-start=\"36\" data-end=\"70\"\u003eSpark Plug Wire Set — 863656A1\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"72\" data-end=\"475\"\u003eThe \u003cstrong data-start=\"76\" data-end=\"128\"\u003eMercury Quicksilver 863656A1 Spark Plug Wire Set\u003c\/strong\u003e is a genuine OEM \u003cstrong data-start=\"146\" data-end=\"167\"\u003eignition wire kit\u003c\/strong\u003e designed for \u003cstrong data-start=\"181\" data-end=\"233\"\u003eMerCruiser V8 MPI sterndrive and inboard engines\u003c\/strong\u003e equipped with ECM-controlled ignition systems. The set delivers high-voltage current from the ignition coil and distributor to the spark plugs, ensuring reliable ignition and smooth engine performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"477\" data-end=\"480\"\u003e\n\u003ch3 data-section-id=\"uvdx3z\" data-start=\"482\" data-end=\"504\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"505\" data-end=\"769\"\u003e\n\u003cli data-section-id=\"1wsfbum\" data-start=\"505\" data-end=\"534\"\u003e\n\u003cp data-start=\"507\" data-end=\"534\"\u003e\u003cstrong data-start=\"507\" data-end=\"523\"\u003ePart Number:\u003c\/strong\u003e 863656A1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1yw20b3\" data-start=\"535\" data-end=\"570\"\u003e\n\u003cp data-start=\"537\" data-end=\"570\"\u003e\u003cstrong data-start=\"537\" data-end=\"556\"\u003eMercury Format:\u003c\/strong\u003e 84-863656A1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"io684u\" data-start=\"571\" data-end=\"623\"\u003e\n\u003cp data-start=\"573\" data-end=\"623\"\u003e\u003cstrong data-start=\"573\" data-end=\"592\"\u003eComponent Type:\u003c\/strong\u003e Spark plug ignition wire set\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"tl8sf9\" data-start=\"624\" data-end=\"683\"\u003e\n\u003cp data-start=\"626\" data-end=\"683\"\u003e\u003cstrong data-start=\"626\" data-end=\"639\"\u003eIncludes:\u003c\/strong\u003e 8 spark plug wires + 1 ignition coil wire\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1xvppf9\" data-start=\"684\" data-end=\"769\"\u003e\n\u003cp data-start=\"686\" data-end=\"769\"\u003e\u003cstrong data-start=\"686\" data-end=\"700\"\u003eOEM Brand:\u003c\/strong\u003e Mercury Marine \/ Quicksilver \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"771\" data-end=\"774\"\u003e\n\u003ch3 data-section-id=\"1p4y2xn\" data-start=\"776\" data-end=\"813\"\u003eCompatible Engines \/ Applications\u003c\/h3\u003e\n\u003cp data-start=\"814\" data-end=\"910\"\u003eCommonly used on \u003cstrong data-start=\"831\" data-end=\"869\"\u003eMerCruiser V8 MPI gasoline engines\u003c\/strong\u003e with ECM-controlled ignition, including:\u003c\/p\u003e\n\u003cul data-start=\"912\" data-end=\"1016\"\u003e\n\u003cli data-section-id=\"k5hx4y\" data-start=\"912\" data-end=\"936\"\u003e\n\u003cp data-start=\"914\" data-end=\"936\"\u003e\u003cstrong data-start=\"914\" data-end=\"936\"\u003e5.0L MPI (305 CID)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"12ytor2\" data-start=\"937\" data-end=\"961\"\u003e\n\u003cp data-start=\"939\" data-end=\"961\"\u003e\u003cstrong data-start=\"939\" data-end=\"961\"\u003e5.7L MPI \/ 350 MAG\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"2nwzcq\" data-start=\"962\" data-end=\"976\"\u003e\n\u003cp data-start=\"964\" data-end=\"976\"\u003e\u003cstrong data-start=\"964\" data-end=\"976\"\u003e6.2L MPI\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"13dobr8\" data-start=\"977\" data-end=\"994\"\u003e\n\u003cp data-start=\"979\" data-end=\"994\"\u003e\u003cstrong data-start=\"979\" data-end=\"994\"\u003e377 MAG MPI\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"vhqo71\" data-start=\"995\" data-end=\"1016\"\u003e\n\u003cp data-start=\"997\" data-end=\"1016\"\u003e\u003cstrong data-start=\"997\" data-end=\"1016\"\u003e383 MAG Stroker\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1018\" data-end=\"1185\"\u003eTypically used on \u003cstrong data-start=\"1036\" data-end=\"1110\"\u003eMerCruiser sterndrive and inboard engines from approximately 2001–2015\u003c\/strong\u003e with \u003cstrong data-start=\"1116\" data-end=\"1144\"\u003eECM 555 ignition systems\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1187\" data-end=\"1190\"\u003e\n\u003ch3 data-section-id=\"1212f2c\" data-start=\"1192\" data-end=\"1204\"\u003eFunction\u003c\/h3\u003e\n\u003cp data-start=\"1205\" data-end=\"1393\"\u003eThe spark plug wire set transfers \u003cstrong data-start=\"1239\" data-end=\"1271\"\u003ehigh-voltage ignition energy\u003c\/strong\u003e from the ignition coil and distributor to each spark plug in the correct firing order. Properly functioning wires ensure:\u003c\/p\u003e\n\u003cul data-start=\"1395\" data-end=\"1520\"\u003e\n\u003cli data-section-id=\"19kbdw7\" data-start=\"1395\" data-end=\"1437\"\u003e\n\u003cp data-start=\"1397\" data-end=\"1437\"\u003eStrong and consistent \u003cstrong data-start=\"1419\" data-end=\"1437\"\u003espark delivery\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"163f5gr\" data-start=\"1438\" data-end=\"1475\"\u003e\n\u003cp data-start=\"1440\" data-end=\"1475\"\u003eSmooth \u003cstrong data-start=\"1447\" data-end=\"1475\"\u003eengine starting and idle\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1hz8ft4\" data-start=\"1476\" data-end=\"1520\"\u003e\n\u003cp data-start=\"1478\" data-end=\"1520\"\u003eReliable \u003cstrong data-start=\"1487\" data-end=\"1520\"\u003eengine performance under load\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1522\" data-end=\"1702\"\u003eThe wires are manufactured with \u003cstrong data-start=\"1554\" data-end=\"1581\"\u003emarine-grade insulation\u003c\/strong\u003e to withstand heat, vibration, and moisture common in marine engine environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1704\" data-end=\"1707\"\u003e\n\u003ch3 data-section-id=\"13qjh9y\" data-start=\"1709\" data-end=\"1746\"\u003eSymptoms of Worn Spark Plug Wires\u003c\/h3\u003e\n\u003cp data-start=\"1747\" data-end=\"1784\"\u003eA worn or damaged wire set may cause:\u003c\/p\u003e\n\u003cul data-start=\"1786\" data-end=\"1870\"\u003e\n\u003cli data-section-id=\"87qohm\" data-start=\"1786\" data-end=\"1807\"\u003e\n\u003cp data-start=\"1788\" data-end=\"1807\"\u003eEngine \u003cstrong data-start=\"1795\" data-end=\"1807\"\u003emisfires\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1gmo3pk\" data-start=\"1808\" data-end=\"1834\"\u003e\n\u003cp data-start=\"1810\" data-end=\"1834\"\u003eRough idle or hesitation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"hb2z6f\" data-start=\"1835\" data-end=\"1850\"\u003e\n\u003cp data-start=\"1837\" data-end=\"1850\"\u003eHard starting\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"be5ijw\" data-start=\"1851\" data-end=\"1870\"\u003e\n\u003cp data-start=\"1853\" data-end=\"1870\"\u003ePoor fuel economy\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1872\" data-end=\"1937\"\u003eReplacing the wire set helps restore proper ignition performance.\u003c\/p\u003e\n\u003chr data-start=\"1939\" data-end=\"1942\"\u003e\n\u003cp data-start=\"1944\" data-end=\"2169\"\u003e⚠️ \u003cstrong data-start=\"1947\" data-end=\"1963\"\u003eFitment Tip:\u003c\/strong\u003e\u003cbr data-start=\"1963\" data-end=\"1966\"\u003eAlways verify compatibility using the \u003cstrong data-start=\"2004\" data-end=\"2038\"\u003eengine model and serial number\u003c\/strong\u003e. MerCruiser MPI engines may use different ignition wire sets depending on the \u003cstrong data-start=\"2117\" data-end=\"2168\"\u003eignition system and distributor style installed\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eOEM parts ship same or next day for fast Canada wide shipping.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Spark plug wire set\u003c\/li\u003e\n\u003cli\u003eCompatible with: Mercury MerCruiser marine engines\u003c\/li\u003e\n\u003cli\u003ePart Number: 863656A1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563896373284,"sku":"863656A1","price":229.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/8af7b332-7d9f-4d18-ab0c-bae9f8cef5ba.png?v=1773359833"},{"product_id":"merc-963","title":"Mercury MerCruiser Quicksilver Spark Plug Wire Set, 6 Leads 881908T","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eQuicksilver 881908T is a set of six spark-plug wires for specified Mercury outboard and Sport Jet ignition systems. Each lead has spark-plug and coil connectors with protective boots.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOEM catalog reference: 84-881908T.\u003c\/li\u003e\n\u003cli\u003eSix ignition leads per set.\u003c\/li\u003e\n\u003cli\u003ePlug and coil connectors with boots.\u003c\/li\u003e\n\u003cli\u003eGTIN: 745061522022.\u003c\/li\u003e\n\u003cli\u003eCatalog package size: 8.75 × 7.50 × 1.50 inches; packaged weight: 0.58 lb.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\u003cp\u003eMercury lists selected 30–300 hp outboard applications, including FourStroke EFI and specified DFI, Pro XS, Racing and ProMax models, plus 240–250 hp JetDrive and SportJet engines. Specific examples include 240 EFI JetDrive serials 0E406400 and up and 250 DFI JetDrive serials 0E407100 and up. Confirm the ignition-coil connector and exact engine parts listing.\u003c\/p\u003e\u003ch2\u003eAlternate Part Numbers\u003c\/h2\u003e\u003cp\u003e84-881908T replaces cable-set references 84-821945T65 and 84-821945T74.\u003c\/p\u003e\u003ch2\u003eReplacement and Installation\u003c\/h2\u003e\u003cp\u003eInspect boots and insulation for cracks, heat damage and poor connections. Route the leads using the engine service instructions and verify correct cylinder\/coil connections.\u003c\/p\u003e\u003ch2\u003eParts Desk Insight\u003c\/h2\u003e\u003cp\u003eThe six-lead package is used across several engine configurations. Match the connector and required routing before substituting a wire set by horsepower alone.\u003c\/p\u003e\u003ch2\u003eManufacturer Parts Lookup\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.mercurymarine.com\/us\/en\/parts-finder\"\u003eOpen Mercury’s official parts finder\u003c\/a\u003e and check the engine or drive serial number and assembly callout.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563901059108,"sku":"881908T","price":206.24,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/mercury-881908t-exact-oem.webp?v=1791246521"},{"product_id":"mercury-spark-plug-ac-41-993-884019001","title":"Mercury MerCruiser Spark Plug AC 41-993 884019001 (Superseded to 8M0204739)","description":"\u003ch2\u003eMercury MerCruiser Spark Plug — AC 41-993 \/ 884019001\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eField\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e884019001 \/ 33-884019001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOriginal Plug\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eACDelco AC 41-993\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMercury Marine \/ MerCruiser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOfficial Product Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpark Plug — Platinum (OEM original service plug)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupersedes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e41-932 \/ Mercury 884019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReplaced By (Current)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/merc-1320\"\u003eQuicksilver 8M0204739 — NGK ITR4A-15 Laser Iridium\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIgnition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSold As\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndividually (one plug per order unless specified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eEngine Family \u0026amp; Compatible Applications\u003c\/h3\u003e\n\u003cp\u003eOriginally specified for GM-based MerCruiser gasoline engines. Always confirm by engine serial number before ordering — similar engines can require different plug specs or gap settings.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4.3L MPI V6\u003c\/li\u003e\n\u003cli\u003e5.0L MPI V8\u003c\/li\u003e\n\u003cli\u003e5.7L \/ 350 MAG MPI V8\u003c\/li\u003e\n\u003cli\u003e6.2L MPI V8\u003c\/li\u003e\n\u003cli\u003e4.3L, 5.0L and 5.7L carbureted variants\u003c\/li\u003e\n\u003cli\u003eScorpion 350\u003c\/li\u003e\n\u003cli\u003eScorpion 377 HO\u003c\/li\u003e\n\u003cli\u003e383 MAG Stroker (selected applications)\u003c\/li\u003e\n\u003cli\u003eAdditional GM-based MerCruiser gasoline engines where the original parts catalog specifies 884019001\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSerial Number \u0026amp; Gap Requirements\u003c\/h3\u003e\n\u003cp\u003eConfirm the engine model and MerCruiser serial number before ordering. The AC 41-993 was used with more than one gap specification depending on engine type:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e~1.14 mm \/ 0.045 in.\u003c\/strong\u003e — selected carbureted applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e~1.52 mm \/ 0.060 in.\u003c\/strong\u003e — most MPI applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways follow the gap specification in the applicable Mercury service manual or engine owner's manual for your serial range. Do not assume one gap applies to all engines using this part number.\u003c\/p\u003e\n\n\u003ch3\u003eWhen to Replace Spark Plugs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWorn, eroded, or fouled electrodes\u003c\/li\u003e\n\u003cli\u003eHeavy carbon, fuel, or oil deposits\u003c\/li\u003e\n\u003cli\u003eCorrosion on the shell or terminal\u003c\/li\u003e\n\u003cli\u003eCracked or damaged ceramic insulator\u003c\/li\u003e\n\u003cli\u003eDifficult starting, rough idle, or intermittent misfire\u003c\/li\u003e\n\u003cli\u003eReduced acceleration or engine performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor multi-cylinder engines, replacing the complete set together helps maintain consistent ignition performance.\u003c\/p\u003e\n\n\u003ch3\u003eService Interval\u003c\/h3\u003e\n\u003cp\u003eMercury typically specifies spark plug inspection at each annual service and replacement every 200–300 hours of operation, or per the interval stated in your engine's owner's manual. Actual interval varies by engine type and use pattern.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the plug specification and gap against the engine serial number and Mercury service information before installing\u003c\/li\u003e\n\u003cli\u003eInstall into a cool cylinder head; follow Mercury's torque specification\u003c\/li\u003e\n\u003cli\u003eWhile servicing plugs, inspect spark-plug wires, boots, distributor (where equipped), and ignition coils for deterioration or corrosion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAlternate \u0026amp; Superseded Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e884019001\u003c\/strong\u003e — original Mercury \/ MerCruiser number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e33-884019001\u003c\/strong\u003e — Mercury catalog format\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC 41-993\u003c\/strong\u003e — original ACDelco designation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e41-932\u003c\/strong\u003e — earlier ACDelco plug superseded by AC 41-993\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e884019\u003c\/strong\u003e — earlier Mercury reference (AC 41-932 applications)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M0204739\u003c\/strong\u003e — current Mercury \/ Quicksilver replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK ITR4A-15\u003c\/strong\u003e — current replacement plug designation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: The replacement plug looks different from the one I removed — is that normal?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. Mercury has moved this application to the \u003ca href=\"\/products\/merc-1320\"\u003eQuicksilver 8M0204739 NGK ITR4A-15 Laser Iridium\u003c\/a\u003e, which has a different appearance from the original AC 41-993 platinum plug. Focus on serial-number fitment, not visual match.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use the same gap as the plug I removed?\u003c\/strong\u003e\u003cbr\u003e\nA: Not necessarily. Gap specification varies by engine model and serial range. Always verify against your Mercury service manual.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to buy a full set?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is sold individually. Order the quantity matching your engine's cylinder count. View the \u003ca href=\"\/products\/merc-1320\"\u003e8M0204739 4-pack\u003c\/a\u003e if you need the current replacement in a multi-pack.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-1320\"\u003eQuicksilver 8M0204739 NGK ITR4A-15 — Current Replacement (4-pack)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eIf your engine originally calls for 884019001 \/ AC 41-993, the most common customer question is whether the newer-looking \u003ca href=\"\/products\/merc-1320\"\u003e8M0204739 NGK Iridium\u003c\/a\u003e is the right fit — it is, for most applications in this family, but always verify by serial number. Customers frequently order one plug when they need a full set; confirm cylinder count at the time of order. The gap setting is the other common issue — different applications within the same engine family use different gaps, so verify before installation rather than reusing the old plug's gap.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563901550628,"sku":"884019001","price":19.42,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/2160b686-8ea4-46f6-a6bd-485e0b114e42.png?v=1775776616"},{"product_id":"quicksilver-ngk-iridium-spark-plug-set-889246q39","title":"Quicksilver NGK Iridium Spark Plug Set 4-Pack (889246Q39)","description":"\u003cp data-start=\"63\" data-end=\"513\"\u003eThe Quicksilver 889246Q39 Spark Plug Set includes four NGK Laser Iridium spark plugs for Mercury applications that call for this exact part number. This plug is identified as NGK \u003cstrong data-start=\"268\" data-end=\"290\"\u003eILFR6GE \/ ILFR6G-E\u003c\/strong\u003e and is sold by Mercury as a genuine Quicksilver replacement. Mercury notes these plugs come pre-gapped to engine specification, but the gap should still be checked before installation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"515\" data-end=\"533\"\u003e\u003cstrong data-start=\"515\" data-end=\"531\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"534\" data-end=\"839\"\u003e\n\u003cli data-start=\"534\" data-end=\"594\"\u003eGenuine Quicksilver \/ Mercury replacement spark plug set\u003c\/li\u003e\n\u003cli data-start=\"595\" data-end=\"638\"\u003e4-pack for engines requiring four plugs\u003c\/li\u003e\n\u003cli data-start=\"639\" data-end=\"718\"\u003eNGK Laser Iridium design for durability and consistent ignition performance\u003c\/li\u003e\n\u003cli data-start=\"719\" data-end=\"756\"\u003eMercury part number \u003cstrong data-start=\"741\" data-end=\"754\"\u003e889246Q39\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"757\" data-end=\"839\"\u003eNGK plug identifier \u003cstrong data-start=\"779\" data-end=\"801\"\u003eILFR6GE \/ ILFR6G-E\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"841\" data-end=\"1221\"\u003e\u003cstrong data-start=\"841\" data-end=\"865\"\u003eEngine Compatibility\u003c\/strong\u003e\u003cbr data-start=\"865\" data-end=\"868\"\u003eThis set is commonly listed for certain \u003cstrong data-start=\"908\" data-end=\"929\"\u003eMercury Verado L4\u003c\/strong\u003e applications, including 1.7L 135, 150, 175, and 200 HP models. Some sellers also associate the same plug family with additional Verado applications, but exact fitment should always be confirmed against the engine model and serial number before ordering. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1223\" data-end=\"1485\"\u003e\u003cstrong data-start=\"1223\" data-end=\"1255\"\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003cbr data-start=\"1255\" data-end=\"1258\"\u003ePlease confirm compatibility by checking your Mercury engine serial number and owner’s manual before purchase. Mercury specifically advises using only the spark plug listed for your engine. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1487\" data-end=\"1857\"\u003e\u003cstrong data-start=\"1487\" data-end=\"1523\"\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003cbr data-start=\"1523\" data-end=\"1526\"\u003eReplace spark plugs during scheduled tune-up service or when you notice hard starting, rough idle, misfiring, reduced fuel efficiency, or weak acceleration. One marine retailer specifically notes a \u003cstrong data-start=\"1724\" data-end=\"1768\"\u003e300-hour service interval recommendation\u003c\/strong\u003e for these NGK plugs on applicable Mercury engines. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1859\" data-end=\"2139\"\u003e\u003cstrong data-start=\"1859\" data-end=\"1881\"\u003eInstallation Notes\u003c\/strong\u003e\u003cbr data-start=\"1881\" data-end=\"1884\"\u003eAlways verify the plug gap before installation, even when the plugs are supplied pre-gapped. Install only the exact plug specified for your engine to help maintain proper performance and avoid ignition-related issues. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2141\" data-end=\"2182\"\u003e\u003cstrong data-start=\"2141\" data-end=\"2180\"\u003eAlternate \/ Superseded Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2183\" data-end=\"2368\"\u003e\n\u003cli data-start=\"2183\" data-end=\"2213\"\u003eNGK \u003cstrong data-start=\"2189\" data-end=\"2211\"\u003eILFR6GE \/ ILFR6G-E\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2214\" data-end=\"2368\"\u003eNGK stock number \u003cstrong data-start=\"2233\" data-end=\"2241\"\u003e4212\u003c\/strong\u003e\u003cbr data-start=\"2241\" data-end=\"2244\"\u003eCross-reference should still be verified by engine model and serial number before use. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2370\" data-end=\"2814\"\u003e\u003cstrong data-start=\"2370\" data-end=\"2392\"\u003eParts Desk Insight\u003c\/strong\u003e\u003cbr data-start=\"2392\" data-end=\"2395\"\u003eFor modern Mercury applications, using the exact spark plug matters more than many boat owners realize. Heat range, electrode design, and factory spec all affect idle quality, throttle response, and long-term ignition reliability, especially on supercharged or high-output four-stroke platforms. Mercury’s own guidance is to stick with the plug listed in the manual for the engine. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2816\" data-end=\"2881\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563902304292,"sku":"889246Q39","price":46.32,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/aa7c0fd3-1699-45eb-9a73-7e28387499dc.png?v=1775762250"},{"product_id":"merc-1023","title":"Mercury Spark Plug QL77JC4 896329828","description":"\u003cp data-start=\"42\" data-end=\"337\"\u003eRestore proper ignition performance and reliable engine starting with the \u003cstrong data-start=\"116\" data-end=\"158\"\u003eMercury Spark Plug QL77JC4 – 896329828\u003c\/strong\u003e. This genuine Mercury Marine OEM spark plug is designed for use in many Mercury and MerCruiser engines, providing consistent spark and reliable combustion in marine environments.\u003c\/p\u003e\n\u003cp data-start=\"339\" data-end=\"694\"\u003eThe QL77JC4 plug features a \u003cstrong data-start=\"367\" data-end=\"419\"\u003ecopper core center electrode and resistor design\u003c\/strong\u003e that helps improve conductivity and reduce radio frequency interference (RFI) that can affect onboard electronics. Marine-grade construction provides excellent corrosion resistance and reliable operation even under heavy engine loads. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"696\" data-end=\"708\"\u003eKey Features\u003c\/p\u003e\n\u003cul data-start=\"710\" data-end=\"1052\"\u003e\n\u003cli data-section-id=\"4e3flm\" data-start=\"710\" data-end=\"751\"\u003e\n\u003cp data-start=\"712\" data-end=\"751\"\u003eGenuine Mercury Marine OEM spark plug\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"otyzho\" data-start=\"752\" data-end=\"801\"\u003e\n\u003cp data-start=\"754\" data-end=\"801\"\u003e\u003cstrong data-start=\"754\" data-end=\"799\"\u003eChampion QL77JC4 marine spark plug design\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"vyt2a5\" data-start=\"802\" data-end=\"871\"\u003e\n\u003cp data-start=\"804\" data-end=\"871\"\u003eCopper core electrode for improved conductivity and heat transfer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"l3n64e\" data-start=\"872\" data-end=\"939\"\u003e\n\u003cp data-start=\"874\" data-end=\"939\"\u003eResistor design helps reduce radio frequency interference (RFI)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"q6j2wj\" data-start=\"940\" data-end=\"993\"\u003e\n\u003cp data-start=\"942\" data-end=\"993\"\u003eCorrosion-resistant shell for marine environments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"grwmbb\" data-start=\"994\" data-end=\"1052\"\u003e\n\u003cp data-start=\"996\" data-end=\"1052\"\u003eProvides reliable ignition and smooth engine operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1054\" data-end=\"1066\"\u003ePart Details\u003c\/p\u003e\n\u003cp data-start=\"1068\" data-end=\"1229\"\u003eOEM Part Number: \u003cstrong data-start=\"1085\" data-end=\"1098\"\u003e896329828\u003c\/strong\u003e\u003cbr data-start=\"1098\" data-end=\"1101\"\u003eMercury Reference Number: \u003cstrong data-start=\"1127\" data-end=\"1143\"\u003e33-896329828\u003c\/strong\u003e\u003cbr data-start=\"1143\" data-end=\"1146\"\u003eChampion Plug Number: \u003cstrong data-start=\"1168\" data-end=\"1186\"\u003eQL77JC4 \/ 828M\u003c\/strong\u003e\u003cbr data-start=\"1186\" data-end=\"1189\"\u003eProduct Type: Marine engine spark plug\u003c\/p\u003e\n\u003cp data-start=\"1231\" data-end=\"1364\"\u003eThread Size: \u003cstrong data-start=\"1244\" data-end=\"1253\"\u003e14 mm\u003c\/strong\u003e\u003cbr data-start=\"1253\" data-end=\"1256\"\u003eReach: \u003cstrong data-start=\"1263\" data-end=\"1275\"\u003e0.500 in\u003c\/strong\u003e\u003cbr data-start=\"1275\" data-end=\"1278\"\u003eSeat Type: \u003cstrong data-start=\"1289\" data-end=\"1302\"\u003eFlat seat\u003c\/strong\u003e\u003cbr data-start=\"1302\" data-end=\"1305\"\u003eHex Size: \u003cstrong data-start=\"1315\" data-end=\"1324\"\u003e20 mm\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1366\" data-end=\"1408\"\u003eTypical Packaging: Individual spark plug\u003c\/p\u003e\n\u003cp data-start=\"1410\" data-end=\"1449\"\u003eCompatible Mercury \u0026amp; MerCruiser Engines\u003c\/p\u003e\n\u003cp data-start=\"1451\" data-end=\"1522\"\u003eCommonly used on various Mercury and MerCruiser applications including:\u003c\/p\u003e\n\u003cp data-start=\"1524\" data-end=\"1541\"\u003eMercury Outboards\u003c\/p\u003e\n\u003cul data-start=\"1543\" data-end=\"1649\"\u003e\n\u003cli data-section-id=\"1liuvz1\" data-start=\"1543\" data-end=\"1609\"\u003e\n\u003cp data-start=\"1545\" data-end=\"1609\"\u003eMercury \u003cstrong data-start=\"1553\" data-end=\"1590\"\u003e7.5HP – 25HP two-stroke outboards\u003c\/strong\u003e (various models)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"epl1e3\" data-start=\"1610\" data-end=\"1649\"\u003e\n\u003cp data-start=\"1612\" data-end=\"1649\"\u003eSelect Mercury \u003cstrong data-start=\"1627\" data-end=\"1647\"\u003eSportJet engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1651\" data-end=\"1669\"\u003eMerCruiser Engines\u003c\/p\u003e\n\u003cul data-start=\"1671\" data-end=\"1726\"\u003e\n\u003cli data-section-id=\"7l7yts\" data-start=\"1671\" data-end=\"1726\"\u003e\n\u003cp data-start=\"1673\" data-end=\"1726\"\u003eSelect \u003cstrong data-start=\"1680\" data-end=\"1726\"\u003eSportJet and small gasoline marine engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1728\" data-end=\"1905\"\u003eThis spark plug is also used in various \u003cstrong data-start=\"1768\" data-end=\"1816\"\u003eJohnson, Evinrude, and Yamaha marine engines\u003c\/strong\u003e, depending on model and ignition specifications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1907\" data-end=\"1915\"\u003eFunction\u003c\/p\u003e\n\u003cp data-start=\"1917\" data-end=\"2122\"\u003eSpark plugs ignite the compressed air-fuel mixture inside the engine cylinder, allowing the engine to produce power. Proper spark plug performance is critical for smooth operation and efficient combustion.\u003c\/p\u003e\n\u003cp data-start=\"2124\" data-end=\"2157\"\u003eReplacing worn spark plugs helps:\u003c\/p\u003e\n\u003cul data-start=\"2159\" data-end=\"2312\"\u003e\n\u003cli data-section-id=\"xhnufg\" data-start=\"2159\" data-end=\"2198\"\u003e\n\u003cp data-start=\"2161\" data-end=\"2198\"\u003eImprove engine starting reliability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1n2tj6v\" data-start=\"2199\" data-end=\"2238\"\u003e\n\u003cp data-start=\"2201\" data-end=\"2238\"\u003eRestore proper ignition performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"h7bf5g\" data-start=\"2239\" data-end=\"2266\"\u003e\n\u003cp data-start=\"2241\" data-end=\"2266\"\u003ePrevent engine misfires\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"b0ntc6\" data-start=\"2267\" data-end=\"2312\"\u003e\n\u003cp data-start=\"2269\" data-end=\"2312\"\u003eMaintain fuel efficiency and engine power\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2314\" data-end=\"2342\"\u003eImportant Compatibility Note\u003c\/p\u003e\n\u003cp data-start=\"2344\" data-end=\"2574\"\u003eSpark plugs vary depending on \u003cstrong data-start=\"2374\" data-end=\"2428\"\u003eengine model, ignition system, and production year\u003c\/strong\u003e. Always verify compatibility using the \u003cstrong data-start=\"2468\" data-end=\"2510\"\u003eengine serial number or owner’s manual\u003c\/strong\u003e before ordering to ensure the correct spark plug specification.\u003c\/p\u003e\n\u003cp data-start=\"2576\" data-end=\"2613\"\u003eCross-Stock \/ Superseded Part Numbers\u003c\/p\u003e\n\u003cul data-start=\"2615\" data-end=\"2876\"\u003e\n\u003cli data-section-id=\"1h22ex\" data-start=\"2615\" data-end=\"2670\"\u003e\n\u003cp data-start=\"2617\" data-end=\"2670\"\u003e\u003cstrong data-start=\"2617\" data-end=\"2633\"\u003e33-896329828\u003c\/strong\u003e – Mercury service reference number\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"frohzs\" data-start=\"2671\" data-end=\"2715\"\u003e\n\u003cp data-start=\"2673\" data-end=\"2715\"\u003e\u003cstrong data-start=\"2673\" data-end=\"2684\"\u003e33-828S\u003c\/strong\u003e – Earlier Mercury equivalent\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fogy7c\" data-start=\"2716\" data-end=\"2772\"\u003e\n\u003cp data-start=\"2718\" data-end=\"2772\"\u003e\u003cstrong data-start=\"2718\" data-end=\"2745\"\u003eChampion 828M \/ QL77JC4\u003c\/strong\u003e – Manufacturer reference\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1m81umj\" data-start=\"2773\" data-end=\"2876\"\u003e\n\u003cp data-start=\"2775\" data-end=\"2876\"\u003e\u003cstrong data-start=\"2775\" data-end=\"2799\"\u003eNGK BZ7HS-10 \/ BR9HS\u003c\/strong\u003e – Common cross-reference equivalents \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2878\" data-end=\"2943\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563909152804,"sku":"896329828","price":17.63,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/d01d99af-facc-4f5f-9962-2f2c427ace5b.png?v=1773466420"},{"product_id":"merc-1320","title":"Mercury MerCruiser NGK Spark Plug ITR4A15 8M0204739 4-pack","description":"\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"da255e46-1145-47dc-817a-944290832e85\" dir=\"auto\" data-message-model-slug=\"gpt-5-3\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"75\"\u003e\u003cstrong data-start=\"0\" data-end=\"73\"\u003eMercury MerCruiser \/ Quicksilver NGK Spark Plug – ITR4A15 (8M0204739)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"77\" data-end=\"446\"\u003eMaintain strong ignition performance with the \u003cstrong data-start=\"123\" data-end=\"210\"\u003egenuine Mercury Marine \/ Quicksilver 8M0204739 NGK ITR4A15 Laser Iridium Spark Plug\u003c\/strong\u003e. This OEM spark plug is designed for select \u003cstrong data-start=\"255\" data-end=\"287\"\u003eMerCruiser V6 and V8 engines\u003c\/strong\u003e, delivering reliable ignition, improved combustion efficiency, and long service life in demanding marine environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"448\" data-end=\"685\"\u003eThe \u003cstrong data-start=\"452\" data-end=\"486\"\u003eLaser Iridium center electrode\u003c\/strong\u003e provides precise spark and exceptional durability, while the copper core and ceramic insulator help dissipate heat and maintain consistent engine performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"687\" data-end=\"690\"\u003e\n\u003ch2 data-start=\"692\" data-end=\"707\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"708\" data-end=\"1086\"\u003e\n\u003cli data-start=\"708\" data-end=\"764\"\u003e\n\u003cp data-start=\"710\" data-end=\"764\"\u003eGenuine \u003cstrong data-start=\"718\" data-end=\"762\"\u003eMercury \/ Quicksilver OEM NGK spark plug\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"765\" data-end=\"839\"\u003e\n\u003cp data-start=\"767\" data-end=\"839\"\u003e\u003cstrong data-start=\"767\" data-end=\"794\"\u003eLaser Iridium electrode\u003c\/strong\u003e for long service life and consistent spark\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"840\" data-end=\"911\"\u003e\n\u003cp data-start=\"842\" data-end=\"911\"\u003e\u003cstrong data-start=\"842\" data-end=\"857\"\u003eCopper core\u003c\/strong\u003e improves heat dissipation and combustion efficiency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"912\" data-end=\"976\"\u003e\n\u003cp data-start=\"914\" data-end=\"976\"\u003eCorrosion-resistant construction for \u003cstrong data-start=\"951\" data-end=\"974\"\u003emarine environments\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"977\" data-end=\"1086\"\u003e\n\u003cp data-start=\"979\" data-end=\"1086\"\u003e\u003cstrong data-start=\"979\" data-end=\"1024\"\u003ePre-gapped to manufacturer specifications\u003c\/strong\u003e for easy installation \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1088\" data-end=\"1091\"\u003e\n\u003ch2 data-start=\"1093\" data-end=\"1108\"\u003ePart Details\u003c\/h2\u003e\n\u003cul data-start=\"1109\" data-end=\"1359\"\u003e\n\u003cli data-start=\"1109\" data-end=\"1143\"\u003e\n\u003cp data-start=\"1111\" data-end=\"1143\"\u003e\u003cstrong data-start=\"1111\" data-end=\"1131\"\u003eOEM Part Number:\u003c\/strong\u003e 8M0204739\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1144\" data-end=\"1187\"\u003e\n\u003cp data-start=\"1146\" data-end=\"1187\"\u003e\u003cstrong data-start=\"1146\" data-end=\"1160\"\u003eNGK Model:\u003c\/strong\u003e ITR4A15 (Stock No. 5599)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1188\" data-end=\"1228\"\u003e\n\u003cp data-start=\"1190\" data-end=\"1228\"\u003e\u003cstrong data-start=\"1190\" data-end=\"1207\"\u003eProduct Type:\u003c\/strong\u003e Iridium spark plugSuperseded \/ Cross-Reference\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1188\" data-end=\"1228\" style=\"font-weight: bold;\"\u003e\u003cstrong\u003e4 pack\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1398\" data-end=\"1458\"\u003eThis plug replaces earlier Mercury part numbers including:\u003c\/p\u003e\n\u003cul data-start=\"1459\" data-end=\"1547\"\u003e\n\u003cli data-start=\"1459\" data-end=\"1473\"\u003e\n\u003cp data-start=\"1461\" data-end=\"1473\"\u003e\u003cstrong data-start=\"1461\" data-end=\"1471\"\u003e884019\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1474\" data-end=\"1491\"\u003e\n\u003cp data-start=\"1476\" data-end=\"1491\"\u003e\u003cstrong data-start=\"1476\" data-end=\"1489\"\u003e884019001\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1492\" data-end=\"1547\"\u003e\n\u003cp data-start=\"1494\" data-end=\"1547\"\u003e\u003cstrong data-start=\"1494\" data-end=\"1507\"\u003e8M2018369\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1549\" data-end=\"1552\"\u003e\n\u003ch2 data-start=\"1554\" data-end=\"1594\"\u003eCompatible Mercury MerCruiser Engines\u003c\/h2\u003e\n\u003cp data-start=\"1595\" data-end=\"1675\"\u003eCommonly used on \u003cstrong data-start=\"1612\" data-end=\"1661\"\u003eMerCruiser MPI sterndrive and inboard engines\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul data-start=\"1677\" data-end=\"1788\"\u003e\n\u003cli data-start=\"1677\" data-end=\"1704\"\u003e\n\u003cp data-start=\"1679\" data-end=\"1704\"\u003e\u003cstrong data-start=\"1679\" data-end=\"1702\"\u003e4.3L V6 MPI engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1705\" data-end=\"1732\"\u003e\n\u003cp data-start=\"1707\" data-end=\"1732\"\u003e\u003cstrong data-start=\"1707\" data-end=\"1730\"\u003e5.0L V8 MPI engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1733\" data-end=\"1760\"\u003e\n\u003cp data-start=\"1735\" data-end=\"1760\"\u003e\u003cstrong data-start=\"1735\" data-end=\"1758\"\u003e5.7L V8 MPI engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1761\" data-end=\"1788\"\u003e\n\u003cp data-start=\"1763\" data-end=\"1788\"\u003e\u003cstrong data-start=\"1763\" data-end=\"1786\"\u003e6.2L V8 MPI engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1790\" data-end=\"1928\"\u003eThese engines are typically equipped with \u003cstrong data-start=\"1832\" data-end=\"1860\"\u003eECM 555 ignition systems\u003c\/strong\u003e in many 2001+ applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1930\" data-end=\"1933\"\u003e\n\u003ch2 data-start=\"1935\" data-end=\"1958\"\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cp data-start=\"1959\" data-end=\"2183\"\u003eIridium spark plugs produce a \u003cstrong data-start=\"1989\" data-end=\"2023\"\u003estronger and more stable spark\u003c\/strong\u003e, which can improve engine starting, maintain smoother idle, and provide more efficient combustion across the RPM range. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"2185\" data-end=\"2188\"\u003e\n\u003ch2 data-start=\"2190\" data-end=\"2221\"\u003eImportant Compatibility Note\u003c\/h2\u003e\n\u003cp data-start=\"2222\" data-end=\"2432\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eSpark plug type and heat range vary by \u003cstrong data-start=\"2261\" data-end=\"2319\"\u003eengine model, ignition system, and serial number range\u003c\/strong\u003e. Always verify compatibility using the \u003cstrong data-start=\"2359\" data-end=\"2415\"\u003eengine serial number or owner’s manual specification\u003c\/strong\u003e before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563924652068,"sku":"8M0204739","price":33.07,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/9c4a4bd8cac6468e95b4e59834258630217907b609a92d3ff1af8d0a00ae74fc.webp?v=1773190980"},{"product_id":"default-21","title":"NGK Spark Plug - BPR4ES","description":"\u003cp\u003eThe \u003cstrong\u003eNGK BPR4ES\u003c\/strong\u003e is a standard copper-core nickel spark plug used in select small engines, utility equipment, ATVs, powersports applications, and outdoor power equipment where the manufacturer specifies the \u003cstrong\u003eBPR4ES \/ NGK 6578\u003c\/strong\u003e plug profile. It features a projected insulator nose, built-in resistor, 14 mm gasket-seat body, and NGK's standard nickel firing-end construction for dependable everyday ignition service in compatible engines.\u003c\/p\u003e\n\u003cp\u003eThis plug should be installed only where the engine service manual, equipment label, or factory application chart specifically calls for \u003cstrong\u003eNGK BPR4ES\u003c\/strong\u003e, \u003cstrong\u003eNGK 6578\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine NGK standard spark plug.\u003c\/li\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eBPR4ES\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eNGK stock number: \u003cstrong\u003e6578\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCopper-core nickel construction for standard service applications.\u003c\/li\u003e\n\u003cli\u003eBuilt-in resistor to help reduce ignition-related RFI noise.\u003c\/li\u003e\n\u003cli\u003eProjected insulator nose design.\u003c\/li\u003e\n\u003cli\u003eThread diameter: \u003cstrong\u003e14 mm \/ M14 x 1.25\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThread reach: \u003cstrong\u003e19 mm \/ 3\/4 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e13\/16 in. \/ 21 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSeat style: \u003cstrong\u003eflat \/ gasket seat\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e4\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFactory preset gap reference: \u003cstrong\u003e0.032 in. \/ 0.8 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCommonly used in select small-engine, lawn care, ATV, generator, pressure washer, and utility-equipment applications where specified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select engines and equipment where the factory plug chart calls for \u003cstrong\u003eNGK BPR4ES \/ 6578\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect small air-cooled utility engines where specified\u003c\/li\u003e\n\u003cli\u003eSelect Kawasaki-powered lawn and turf equipment where specified\u003c\/li\u003e\n\u003cli\u003eSelect pressure washer, generator, chipper, and outdoor power equipment applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect ATV, utility cart, and powersports applications where the manufacturer lists \u003cstrong\u003eBPR4ES\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOther equipment requiring a 14 mm, 19 mm reach, gasket-seat resistor plug with projected-tip construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this spark plug only where the manufacturer's application chart specifically lists \u003cstrong\u003eBPR4ES\u003c\/strong\u003e, \u003cstrong\u003e6578\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by exact equipment brand, engine model, serial number, service manual, and factory spark plug chart before ordering. Spark plugs with the same thread diameter can still differ in reach, heat range, seat style, projection, terminal style, resistor specification, and required gap. Installing the wrong plug can cause hard starting, misfire, poor idle, overheating, thread damage, piston contact, or ignition-system issues.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plugs during scheduled tune-up service or whenever the plug is worn, fouled, fuel-soaked, oil-contaminated, cracked, corroded, damaged, or causing hard starting, rough idle, hesitation, weak acceleration, misfire, or poor low-speed running. Small engines that idle frequently, run under dusty load, or sit in seasonal storage should have spark plugs inspected regularly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCheck the plug number and required gap against the engine service chart before installation. Install into clean, undamaged cylinder head threads and tighten to the manufacturer's torque specification for the exact engine. Because this is a gasket-seat plug, confirm the sealing washer is present and seats correctly.\u003c\/p\u003e\n\u003cp\u003eAvoid adding anti-seize unless the engine or spark plug manufacturer specifically calls for it, as thread lubricant can change clamping load and increase the risk of over-tightening. Confirm the terminal style matches the ignition boot before installation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK BPR4ES\u003c\/strong\u003e — spark plug part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK 6578\u003c\/strong\u003e — NGK stock number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBPR4ES Standard\u003c\/strong\u003e — product style reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonda 98079-54817\u003c\/strong\u003e — cross-reference; verify by engine model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonda 98079-54846\u003c\/strong\u003e — cross-reference; verify by engine model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKawasaki 92070-7004\u003c\/strong\u003e — cross-reference; verify by engine model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKawasaki 92070-2112\u003c\/strong\u003e — cross-reference; verify by engine model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDenso W14EPR-U \/ W14EPRU\u003c\/strong\u003e — cross-reference; verify by application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChampion RN11YC \/ RN12YC \/ RN14YC\u003c\/strong\u003e — cross-reference; verify by application\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBPR4ES\u003c\/strong\u003e is a hotter heat-range plug often used in small engines that spend time at light load, idle, or intermittent duty. Match it by exact plug number, reach, seat style, heat range, and required gap rather than by equipment type alone. A hotter plug can help resist carbon fouling in the right application, but the wrong heat range can create poor running or engine damage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MISC.","offers":[{"title":"Default Title","offer_id":43563930320932,"sku":"6578","price":5.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/3a6e3162-6e27-4722-8b79-189d4d107b66.png?v=1781207358"},{"product_id":"pcm-117","title":"PCM Spark Plug RP030007","description":"\u003cp data-start=\"0\" data-end=\"295\"\u003eEnsure reliable ignition and proper engine performance with the \u003cstrong data-start=\"64\" data-end=\"91\"\u003ePCM Spark Plug RP030007\u003c\/strong\u003e. This genuine Pleasurecraft Marine (PCM) OEM spark plug kit is designed for \u003cstrong data-start=\"168\" data-end=\"201\"\u003eFord-based PCM marine engines\u003c\/strong\u003e, providing the correct heat range and ignition characteristics required for marine operation.\u003c\/p\u003e\n\u003cp data-start=\"297\" data-end=\"651\"\u003eThe RP030007 kit includes a complete set of \u003cstrong data-start=\"341\" data-end=\"362\"\u003eeight spark plugs\u003c\/strong\u003e used on high-output Ford marine engines such as the \u003cstrong data-start=\"415\" data-end=\"435\"\u003e351 HO and GT-40\u003c\/strong\u003e. These plugs are engineered to deliver consistent spark and reliable combustion under heavy marine loads, helping maintain smooth engine operation and optimal fuel efficiency. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"653\" data-end=\"665\"\u003eKey Features\u003c\/p\u003e\n\u003cul data-start=\"667\" data-end=\"1020\"\u003e\n\u003cli data-start=\"667\" data-end=\"728\"\u003e\n\u003cp data-start=\"669\" data-end=\"728\"\u003eGenuine \u003cstrong data-start=\"677\" data-end=\"726\"\u003ePCM (Pleasurecraft Marine) OEM spark plug kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"729\" data-end=\"786\"\u003e\n\u003cp data-start=\"731\" data-end=\"786\"\u003eDesigned for \u003cstrong data-start=\"744\" data-end=\"784\"\u003eFord 351 HO and GT-40 marine engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"787\" data-end=\"839\"\u003e\n\u003cp data-start=\"789\" data-end=\"839\"\u003eCorrect heat range for marine engine performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"840\" data-end=\"902\"\u003e\n\u003cp data-start=\"842\" data-end=\"902\"\u003eCopper core plug design for strong spark and heat transfer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"903\" data-end=\"967\"\u003e\n\u003cp data-start=\"905\" data-end=\"967\"\u003eHelps maintain reliable ignition and smooth engine operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"968\" data-end=\"1020\"\u003e\n\u003cp data-start=\"970\" data-end=\"1020\"\u003eComplete \u003cstrong data-start=\"979\" data-end=\"1003\"\u003eset of 8 spark plugs\u003c\/strong\u003e for V8 engines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1022\" data-end=\"1034\"\u003ePart Details\u003c\/p\u003e\n\u003cp data-start=\"1036\" data-end=\"1112\"\u003eOEM Part Number: \u003cstrong data-start=\"1053\" data-end=\"1065\"\u003eRP030007\u003c\/strong\u003e\u003cbr data-start=\"1065\" data-end=\"1068\"\u003eProduct Type: Marine engine spark plug kit\u003c\/p\u003e\n\u003cp data-start=\"1114\" data-end=\"1317\"\u003ePlug Type: Copper core marine spark plugs\u003cbr data-start=\"1155\" data-end=\"1158\"\u003eThread Size: \u003cstrong data-start=\"1171\" data-end=\"1180\"\u003e14 mm\u003c\/strong\u003e\u003cbr data-start=\"1180\" data-end=\"1183\"\u003eSocket Size: \u003cstrong data-start=\"1196\" data-end=\"1206\"\u003e5\/8 in\u003c\/strong\u003e\u003cbr data-start=\"1206\" data-end=\"1209\"\u003eTypical Plug Gap: \u003cstrong data-start=\"1227\" data-end=\"1251\"\u003e.035 in (carbureted)\u003c\/strong\u003e \/ \u003cstrong data-start=\"1254\" data-end=\"1277\"\u003e.045 in (EFI GT-40)\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1319\" data-end=\"1364\"\u003ePackaging: Set of \u003cstrong data-start=\"1345\" data-end=\"1362\"\u003e8 spark plugs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1366\" data-end=\"1397\"\u003eCompatible PCM \u0026amp; Indmar Engines\u003c\/p\u003e\n\u003cp data-start=\"1399\" data-end=\"1468\"\u003eDesigned for \u003cstrong data-start=\"1412\" data-end=\"1456\"\u003eFord-based PCM and Indmar marine engines\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cp data-start=\"1470\" data-end=\"1481\"\u003ePCM Engines\u003c\/p\u003e\n\u003cul data-start=\"1483\" data-end=\"1564\"\u003e\n\u003cli data-start=\"1483\" data-end=\"1516\"\u003e\n\u003cp data-start=\"1485\" data-end=\"1516\"\u003e\u003cstrong data-start=\"1485\" data-end=\"1514\"\u003eFord 351 HO (High Output)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1517\" data-end=\"1539\"\u003e\n\u003cp data-start=\"1519\" data-end=\"1539\"\u003e\u003cstrong data-start=\"1519\" data-end=\"1537\"\u003eFord 351 GT-40\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1540\" data-end=\"1564\"\u003e\n\u003cp data-start=\"1542\" data-end=\"1564\"\u003e\u003cstrong data-start=\"1542\" data-end=\"1564\"\u003eFord 351 GT-40 EFI\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1566\" data-end=\"1716\"\u003eThese engines are commonly used in \u003cstrong data-start=\"1601\" data-end=\"1675\"\u003eCorrect Craft \/ Nautique ski boats and other inboard wake or ski boats\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1718\" data-end=\"1726\"\u003eFunction\u003c\/p\u003e\n\u003cp data-start=\"1728\" data-end=\"1906\"\u003eSpark plugs ignite the air-fuel mixture inside the engine cylinder. Proper spark plug performance is critical for maintaining engine power, smooth operation, and fuel efficiency.\u003c\/p\u003e\n\u003cp data-start=\"1908\" data-end=\"1941\"\u003eReplacing worn spark plugs helps:\u003c\/p\u003e\n\u003cul data-start=\"1943\" data-end=\"2112\"\u003e\n\u003cli data-start=\"1943\" data-end=\"1982\"\u003e\n\u003cp data-start=\"1945\" data-end=\"1982\"\u003eRestore proper ignition performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1983\" data-end=\"2022\"\u003e\n\u003cp data-start=\"1985\" data-end=\"2022\"\u003eImprove engine starting reliability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2023\" data-end=\"2069\"\u003e\n\u003cp data-start=\"2025\" data-end=\"2069\"\u003eReduce misfires and rough engine operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2070\" data-end=\"2112\"\u003e\n\u003cp data-start=\"2072\" data-end=\"2112\"\u003eMaintain optimal combustion efficiency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2114\" data-end=\"2142\"\u003eImportant Compatibility Note\u003c\/p\u003e\n\u003cp data-start=\"2144\" data-end=\"2376\"\u003eSpark plugs vary depending on \u003cstrong data-start=\"2174\" data-end=\"2238\"\u003eengine model, ignition system type, and cylinder head design\u003c\/strong\u003e. Always verify compatibility using the \u003cstrong data-start=\"2278\" data-end=\"2312\"\u003eengine model and serial number\u003c\/strong\u003e before ordering to ensure the correct spark plug specification.\u003c\/p\u003e\n\u003cp data-start=\"2378\" data-end=\"2415\"\u003eCross-Stock \/ Superseded Part Numbers\u003c\/p\u003e\n\u003cul data-start=\"2417\" data-end=\"2673\"\u003e\n\u003cli data-start=\"2417\" data-end=\"2469\"\u003e\n\u003cp data-start=\"2419\" data-end=\"2469\"\u003e\u003cstrong data-start=\"2419\" data-end=\"2435\"\u003eAutolite 104\u003c\/strong\u003e – Current plug used in this kit\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2470\" data-end=\"2570\"\u003e\n\u003cp data-start=\"2472\" data-end=\"2570\"\u003e\u003cstrong data-start=\"2472\" data-end=\"2488\"\u003eAutolite 764\u003c\/strong\u003e – Earlier plug superseded by Autolite 104 \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2571\" data-end=\"2673\"\u003e\n\u003cp data-start=\"2573\" data-end=\"2673\"\u003e\u003cstrong data-start=\"2573\" data-end=\"2597\"\u003eNGK TR5-1 \/ NGK 7060\u003c\/strong\u003e – Common cross-reference equivalent \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2675\" data-end=\"2740\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"PCM","offers":[{"title":"Default Title","offer_id":43563970494500,"sku":"RP030007","price":42.64,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/45c000b3-8db4-4ffa-8d2f-9d7da9e435e4.png?v=1773555442"},{"product_id":"pcm-123","title":"PCM Ford Marine Engine Tune-Up Kit RP173024","description":"\u003cp\u003ePCM RP173024 is a genuine OEM Pleasurecraft Marine tune-up kit for \u003cstrong\u003eFord 302 and 351 marine engines, 1986 and earlier\u003c\/strong\u003e, using the \u003cstrong\u003ePrestolite clip-down distributor cap\u003c\/strong\u003e setup. Current parts sources consistently identify this kit as the pre-1987 version, distinct from later screw-down cap kit \u003cstrong\u003eRP173024A\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine OEM \u003cstrong\u003ePleasurecraft Marine\u003c\/strong\u003e part number \u003cstrong\u003eRP173024\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFits \u003cstrong\u003eFord 302 and 351 PCM marine engines, 1986 and prior\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003ePrestolite clip-down cap\u003c\/strong\u003e distributor systems.\u003c\/li\u003e\n\u003cli\u003eKit contents: \u003cstrong\u003epoints, condenser, rotor button, distributor cap, and gasket\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe strongest supportable fitment for RP173024 is PCM Ford \u003cstrong\u003e302 and 351 Windsor marine engines from 1986 and earlier\u003c\/strong\u003e that use the \u003cstrong\u003ePrestolite clip-down cap distributor\u003c\/strong\u003e. This is the earlier ignition-service kit and should not be confused with \u003cstrong\u003eRP173024A\u003c\/strong\u003e, which is the \u003cstrong\u003e1987-and-later\u003c\/strong\u003e screw-down cap version.\u003c\/p\u003e\n\n\u003ch2\u003eSerial Number Fitment Notice\u003c\/h2\u003e\n\u003cp\u003eMatch this kit to the \u003cstrong\u003edistributor style first\u003c\/strong\u003e before ordering. On older PCM Ford engines, the difference between \u003cstrong\u003eclip-down\u003c\/strong\u003e and \u003cstrong\u003escrew-down\u003c\/strong\u003e cap versions matters more than the engine family alone, especially around the 1986\/1987 break.\u003c\/p\u003e\n\n\u003ch2\u003eWhen This Part Needs Replacement\u003c\/h2\u003e\n\u003cp\u003eThis tune-up kit is typically used during routine ignition maintenance or when hard starting, rough idle, weak spark, misfire, inconsistent timing, or visible wear in the cap, rotor, points, or condenser shows up during inspection. That service guidance is a practical inference from the kit contents and its intended ignition-maintenance role.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eBefore ordering, confirm that the engine still uses the \u003cstrong\u003ePrestolite clip-down cap distributor\u003c\/strong\u003e and not the later screw-down style. Compare the existing distributor cap hold-down method before installation, since that is the clearest break between RP173024 and RP173024A.\u003c\/p\u003e\n\n\u003ch2\u003eAlternate\/Superseded Part Numbers\u003c\/h2\u003e\n\u003cp\u003eCurrent reviewed sources continue to list \u003cstrong\u003eRP173024\u003c\/strong\u003e as the correct PCM OEM number for the \u003cstrong\u003e1986-and-prior clip-down cap\u003c\/strong\u003e setup. The most important related number is \u003cstrong\u003eRP173024A\u003c\/strong\u003e, which is the later \u003cstrong\u003e1987-and-newer screw-down cap\u003c\/strong\u003e kit rather than a direct same-application substitute.\u003c\/p\u003e\n\n\u003ch2\u003eParts Desk Insight\u003c\/h2\u003e\n\u003cp\u003eWith older PCM Ford tune-up kits, the easy mistake is ordering by engine size only. Checking whether the distributor uses a \u003cstrong\u003eclip-down\u003c\/strong\u003e or \u003cstrong\u003escrew-down\u003c\/strong\u003e cap usually saves the most time, because that one detail determines whether RP173024 is the right kit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"PCM","offers":[{"title":"Default Title","offer_id":43563970691108,"sku":"RP173024","price":48.22,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/1d025926-e80a-4e66-8e21-e278a2104785.png?v=1776650523"},{"product_id":"volvo-penta-spark-plug-kit-21513423","title":"Volvo Penta Spark Plug Kit 21513423 | OEM Gasoline Engine Ignition Kit","description":"\u003ch2\u003eVolvo Penta Spark Plug Kit — Part #21513423\u003c\/h2\u003e\n\n\u003cp\u003eThis is the genuine OEM spark plug kit for Volvo Penta 4.3L and 5.0L GXi\/OSi gasoline marine engines. The complete kit includes the full set of pre-gapped plugs to the factory specification, making it the straightforward choice for scheduled tune-ups or ignition system restoration. Designed for a direct fit with no modification required.\u003c\/p\u003e\n\n\u003ch3\u003ePart Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 21513423\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Volvo Penta\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial Product Type:\u003c\/strong\u003e Spark Plug Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New OEM\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKit Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eComplete set of OEM spark plugs (quantity matches engine cylinder count)\u003c\/li\u003e\n\u003cli\u003ePre-gapped to factory specification — ready to install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta 4.3L GXi, 4.3L OSi gasoline marine engines\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 5.0L GXi, 5.0L OSi gasoline marine engines\u003c\/li\u003e\n\u003cli\u003eCompatibility is serial-number dependent — verify against your engine serial number and parts diagram before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Direct OEM replacement — no modification required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGap:\u003c\/strong\u003e Pre-set to factory specification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Range:\u003c\/strong\u003e Optimized for marine gasoline applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Weight:\u003c\/strong\u003e Approx. 0.3 kg (full kit)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e This kit is the right choice for annual tune-ups on 4.3L and 5.0L Volvo Penta gasoline engines, or any time you're chasing a rough idle, hard start, or noticeable drop in fuel economy. It's one of the highest-value maintenance items on these engines — fresh plugs often make a dramatic difference in throttle response and idle quality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Issues:\u003c\/strong\u003e Customers frequently contact us after noticing a rough idle or misfires that appeared gradually over a season. Fouled or worn plugs are a common culprit on engines that see a lot of low-speed trolling or short run cycles. If you're replacing plugs due to fouling, it's worth inspecting the ignition cables at the same time — deteriorated cables are often found alongside worn plugs on higher-hour engines.\u003c\/p\u003e\n\n\u003ch3\u003eService Interval\u003c\/h3\u003e\n\u003cp\u003eVolvo Penta recommends replacing spark plugs every 100–200 hours or annually, whichever comes first. Replace sooner if you notice rough idle, misfires, hard starting, or increased fuel consumption. Always refer to your engine's service manual for the exact interval for your model and serial number range.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are the plugs pre-gapped in this kit?\u003c\/strong\u003e\u003cbr\u003eA: Yes — OEM Volvo Penta spark plug kits are pre-gapped to factory specification. Verify the gap before installation as a best practice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use aftermarket plugs instead?\u003c\/strong\u003e\u003cbr\u003eA: Aftermarket equivalents exist (such as Champion RV12YC or NGK BPR6EFS), but OEM plugs are spec'd to the exact heat range and thread reach for your engine. We carry both — contact us if you'd like to compare options.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know how many plugs are in the kit?\u003c\/strong\u003e\u003cbr\u003eA: The kit is sized for your engine's cylinder count. A 4.3L V6 takes 6 plugs; a 5.0L V8 takes 8. Confirm your engine model when ordering if you're unsure.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/volvo-penta-8-1l-v8-spark-plug-kit-3861327-price-flag\"\u003eVolvo Penta 8.1L V8 Spark Plug Kit 3861327\u003c\/a\u003e — OEM plug kit for larger V8 engines\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/volvo-penta-8-1l-v8-ignition-cable-kit-3861295\"\u003eVolvo Penta 8.1L V8 Ignition Cable Kit 3861295\u003c\/a\u003e — replace cables alongside plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/volvo-penta-ignition-cable-kit-3888328\"\u003eVolvo Penta Ignition Cable Kit 3888328\u003c\/a\u003e — ignition wire set, commonly replaced at same interval\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/champion-rv12yc-spark-plug-406-4-pack-volvo-penta-marine-inboard\"\u003eChampion RV12YC Spark Plug #406 4-Pack\u003c\/a\u003e — aftermarket equivalent option\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/ngk-spark-plug-bpr6efs-3523\"\u003eNGK Spark Plug BPR6EFS 3523\u003c\/a\u003e — aftermarket alternative\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/sierra-marine-distributor-cap-18-5362\"\u003eSierra Marine Distributor Cap 18-5362\u003c\/a\u003e — related ignition system component\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VOL","offers":[{"title":"Default Title","offer_id":43563988156452,"sku":"21513423","price":150.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/fe3068ec-5d63-4884-95e9-9781d7656ff2.png?v=1772665937"},{"product_id":"ngk-4","title":"NGK Spark Plug - DR7EA","description":"\u003cp\u003eThe \u003cstrong\u003eNGK DR7EA\u003c\/strong\u003e is a standard resistor spark plug used in select motorcycles, ATVs, scooters, utility engines, and specialty small-engine applications where the manufacturer specifies the \u003cstrong\u003eDR7EA \/ NGK 7839\u003c\/strong\u003e plug profile. It uses copper-core nickel construction, a built-in resistor, a 12 mm thread body, and a flat\/gasket-seat design for dependable ignition service in compatible engines.\u003c\/p\u003e\n\u003cp\u003eThis plug should be installed only where the engine service manual, equipment label, or factory application chart specifically calls for \u003cstrong\u003eNGK DR7EA\u003c\/strong\u003e, \u003cstrong\u003eNGK 7839\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine NGK standard spark plug.\u003c\/li\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eDR7EA\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eNGK stock number: \u003cstrong\u003e7839\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCopper-core nickel construction for standard service applications.\u003c\/li\u003e\n\u003cli\u003eBuilt-in resistor to help reduce ignition-related RFI noise.\u003c\/li\u003e\n\u003cli\u003eThread diameter: \u003cstrong\u003e12 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThread reach: \u003cstrong\u003e19 mm \/ 3\/4 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e18 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSeat style: \u003cstrong\u003eflat \/ gasket seat\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eTip style: \u003cstrong\u003enon-projected\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e7\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFactory preset gap reference: \u003cstrong\u003e0.028 in. \/ 0.7 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eTerminal style: \u003cstrong\u003ethreaded stud \/ removable terminal nut\u003c\/strong\u003e, depending on cap-wire requirement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select engines where the factory plug chart calls for \u003cstrong\u003eNGK DR7EA \/ 7839\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect \u003cstrong\u003eSuzuki motorcycle\u003c\/strong\u003e applications where specified.\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eATV and powersports\u003c\/strong\u003e applications where specified.\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003escooter and utility-engine\u003c\/strong\u003e applications where specified.\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eBMW motorcycle\u003c\/strong\u003e applications where the plug chart confirms DR7EA.\u003c\/li\u003e\n\u003cli\u003eSelect Yamaha, Honda, Kawasaki, Suzuki, and other powersports applications where the manufacturer lists the same plug profile.\u003c\/li\u003e\n\u003cli\u003eSelect specialty marine or compact four-stroke applications only where the engine chart specifically calls for \u003cstrong\u003eDR7EA \/ 7839\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this plug only where the manufacturer's application chart lists \u003cstrong\u003eDR7EA\u003c\/strong\u003e, \u003cstrong\u003e7839\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by exact year, make, model, engine size, serial number, service manual, and spark plug chart before ordering. Spark plugs with the same thread diameter can still differ in reach, heat range, seat style, terminal type, resistor design, projection, and required gap. Installing the wrong plug can cause hard starting, misfire, poor idle, overheating, thread damage, piston contact, or ignition-system issues.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plugs during scheduled tune-up service or whenever the plug is worn, fouled, fuel-soaked, oil-contaminated, cracked, corroded, damaged, or causing hard starting, rough idle, hesitation, misfire, weak acceleration, or poor throttle response. Engines that idle for long periods, operate in damp conditions, or sit in seasonal storage should have plugs inspected more regularly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCheck the plug number and required gap before installation. Install into clean, undamaged cylinder head threads and tighten to the engine manufacturer's torque specification for the exact engine. Because this is a gasket-seat plug, confirm the sealing washer is present and seats correctly.\u003c\/p\u003e\n\u003cp\u003eAvoid adding anti-seize unless the engine or spark plug manufacturer specifically calls for it, as thread lubricant can change clamping load and increase the risk of over-tightening in aluminum cylinder heads. Confirm whether the ignition lead requires the removable terminal nut installed or removed before fitting the spark plug cap.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK DR7EA\u003c\/strong\u003e — spark plug part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK 7839\u003c\/strong\u003e — NGK stock number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDR7EA Standard\u003c\/strong\u003e — product style reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK stk 7839\u003c\/strong\u003e — catalog stock-number reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuzuki 09482-00222\u003c\/strong\u003e — cross-reference; verify by model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuzuki 09482-00398\u003c\/strong\u003e — cross-reference; verify by model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYamaha 94701-00345\u003c\/strong\u003e — cross-reference; verify by model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonda 98069-57716 \/ 98069-57726\u003c\/strong\u003e — cross-reference; verify by model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDenso X22ESR-U \/ X22ESRU\u003c\/strong\u003e — cross-reference; verify by application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChampion RA8HC \/ RA6HC\u003c\/strong\u003e — cross-reference; verify by application\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDR7EA\u003c\/strong\u003e is a 12 mm, 19 mm reach resistor plug with a non-projected firing end and heat range 7. It should be matched by exact plug number and application chart, not just by vehicle category or thread size. Correct reach, seat style, terminal setup, gap, and heat range are all important for reliable ignition and cylinder-head safety.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564074434596,"sku":"DR-7-EA","price":6.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/aa0edefd-5749-413f-ac7c-1063f2e27fe5.png?v=1781206079"},{"product_id":"west-1135","title":"NGK Spark Plug - BPR6EFS 3523","description":"\u003cp\u003eThe \u003cstrong\u003eNGK BPR6EFS\u003c\/strong\u003e is a resistor, projected-tip spark plug used in marine gasoline engines that specifically call for this plug style. The important specs are the \u003cstrong\u003eBPR6EFS plug code\u003c\/strong\u003e, \u003cstrong\u003eresistor design\u003c\/strong\u003e, \u003cstrong\u003eprojected firing tip\u003c\/strong\u003e, \u003cstrong\u003egasket-style seat\u003c\/strong\u003e, and correct reach\/heat range match. Spark plug reach and seat type must match the cylinder head; using the wrong seat or reach can cause sealing problems, pre-ignition, thread damage, or internal interference.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eBPR6EFS\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eB\u003c\/strong\u003e = 14 mm thread size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP\u003c\/strong\u003e = projected insulator \/ projected tip\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR\u003c\/strong\u003e = resistor plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6\u003c\/strong\u003e = NGK heat range 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eE\u003c\/strong\u003e = 19 mm \/ 3\/4 in reach\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eF\u003c\/strong\u003e = tapered\/compact plug style family designation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e = standard copper-core electrode style\u003c\/li\u003e\n\u003cli\u003eCommonly used where a projected-tip resistor plug is specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFits engines that specifically call for \u003cstrong\u003eNGK BPR6EFS\u003c\/strong\u003e. This plug is commonly used in select GM-based marine engine applications, including certain MerCruiser, Volvo Penta, and other marine gasoline engines when listed in the engine service specification.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm by engine model, serial number, ignition system, and service manual. Do not substitute based on thread size alone. Reach, seat style, heat range, and plug gap all matter.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace during tune-ups, hard-start diagnosis, rough idle, misfire troubleshooting, fouling, poor acceleration, or after long service intervals.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSet the spark plug gap to the engine manufacturer's specification before installation. Install into clean threads and torque to the correct spec for the cylinder head and plug seat type. Do not mix tapered-seat and gasket-seat plugs unless the engine manual specifically calls for that style.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNGK BPR6EFS\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe easy mistake is treating \u003cstrong\u003eBPR6EFS\u003c\/strong\u003e, \u003cstrong\u003eBPR6ES\u003c\/strong\u003e, and \u003cstrong\u003eBPR6FS\u003c\/strong\u003e like close substitutes. They are not automatically interchangeable. The letters define reach, tip projection, resistor construction, and plug body style, so the safest match is always the exact plug code listed for the engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564190728228,"sku":"NGK-BPR6EFS","price":5.93,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/4bc71e9d-3416-418b-afe6-6ea17be60593.png?v=1778957366"},{"product_id":"west-1137","title":"NGK Spark Plug - BR6ES","description":"\u003cp\u003eThe \u003cstrong\u003eNGK BR6ES\u003c\/strong\u003e is a standard copper-core nickel spark plug used in select marine outboards, motorcycles, ATVs, small engines, and utility equipment where the manufacturer specifies the \u003cstrong\u003eBR6ES \/ NGK 4922\u003c\/strong\u003e plug profile. It features a resistor design to help reduce ignition-related RFI noise and a gasket-seat 14 mm body for engines that require this plug style.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eBR6ES\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eNGK stock number: \u003cstrong\u003e4922\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCopper-core nickel construction\u003c\/li\u003e\n\u003cli\u003eBuilt-in resistor for RFI suppression\u003c\/li\u003e\n\u003cli\u003eThread diameter: \u003cstrong\u003e14 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThread reach: \u003cstrong\u003e19 mm \/ 3\/4 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e13\/16 in. \/ 21 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSeat style: \u003cstrong\u003eflat \/ gasket seat\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e6\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFactory preset gap reference: \u003cstrong\u003e0.035 in. \/ 0.9 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eStandard non-projected firing-end design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes engines where the factory plug chart calls for \u003cstrong\u003eNGK BR6ES \/ 4922\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect Mercury \/ Mariner outboard applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect powersports and ATV engines where specified\u003c\/li\u003e\n\u003cli\u003eSelect vintage motorcycle applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect small-engine, generator, saw, and utility equipment applications where specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this plug only where the manufacturer's application chart lists \u003cstrong\u003eBR6ES\u003c\/strong\u003e, \u003cstrong\u003e4922\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by exact engine model, serial number, year, service manual, and factory spark plug chart before ordering. Spark plugs with the same thread size can still differ in reach, heat range, seat style, projection, terminal type, resistor design, and required gap.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plugs during scheduled tune-up service or when the plug is worn, fouled, oil-contaminated, fuel-soaked, corroded, cracked, or causing hard starting, rough idle, hesitation, misfire, or poor low-speed running.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCheck the required gap before installation. Install into clean, undamaged threads and tighten to the engine manufacturer's torque specification. Because this is a gasket-seat plug, confirm the sealing washer is present and seats correctly. Avoid anti-seize unless the manufacturer specifically calls for it.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNGK BR6ES\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNGK 4922\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury 33-813471 1\u003c\/strong\u003e — marine reference; verify by engine serial number and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBR6EIX\u003c\/strong\u003e — iridium-style upgrade reference; verify by application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBR6EG\u003c\/strong\u003e — fine-wire\/racing-style reference; verify by application\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBR6ES\u003c\/strong\u003e should be matched by exact plug number and engine chart, not by thread size alone. Correct reach, gasket-seat design, heat range, and gap are critical for reliable ignition and cylinder-head safety.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564190859300,"sku":"NGK-BR6ES","price":6.21,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/8757753a-aad6-42f7-ab8c-3200b6ebac52.png?v=1781205271"},{"product_id":"ngk-br6fs-spark-plug-4323-ngk-br6fs","title":"NGK BR6FS Spark Plug #4323","description":"\u003cp data-start=\"69\" data-end=\"509\"\u003eThe \u003cstrong data-start=\"73\" data-end=\"86\"\u003eNGK BR6FS\u003c\/strong\u003e is a resistor-equipped marine spark plug engineered for dependable ignition performance in classic carbureted and early electronic-ignition marine engines. Featuring a copper-core center electrode, durable nickel-alloy firing surfaces, and NGK's corrosion-resistant trivalent metal plating, the BR6FS is designed to withstand the demanding operating conditions commonly found in sterndrive and inboard marine applications.\u003c\/p\u003e\n\u003cp data-start=\"511\" data-end=\"783\"\u003eWidely recognized as a direct replacement for the classic \u003cstrong data-start=\"569\" data-end=\"587\"\u003eAC Delco MR43T\u003c\/strong\u003e, the BR6FS has long been used in MerCruiser, Indmar, PCM, Crusader, and other GM-based marine powerplants where reliable cold starts, smooth idle quality, and resistance to fouling are essential.\u003c\/p\u003e\n\u003ch2 data-start=\"785\" data-end=\"804\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"788\" data-end=\"804\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"806\" data-end=\"1340\"\u003e\n\u003cli data-start=\"806\" data-end=\"837\"\u003eGenuine NGK marine spark plug\u003c\/li\u003e\n\u003cli data-start=\"838\" data-end=\"866\"\u003eNGK Part Number: \u003cstrong data-start=\"857\" data-end=\"866\"\u003eBR6FS\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"867\" data-end=\"895\"\u003eNGK Stock Number: \u003cstrong data-start=\"887\" data-end=\"895\"\u003e4323\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"896\" data-end=\"965\"\u003eBuilt-in resistor helps suppress radio frequency interference (RFI)\u003c\/li\u003e\n\u003cli data-start=\"966\" data-end=\"1024\"\u003eCopper-core center electrode for excellent heat transfer\u003c\/li\u003e\n\u003cli data-start=\"1025\" data-end=\"1077\"\u003eNickel-alloy firing surfaces for long service life\u003c\/li\u003e\n\u003cli data-start=\"1078\" data-end=\"1123\"\u003eCorrosion-resistant trivalent metal plating\u003c\/li\u003e\n\u003cli data-start=\"1124\" data-end=\"1147\"\u003e14 mm thread diameter\u003c\/li\u003e\n\u003cli data-start=\"1148\" data-end=\"1172\"\u003e11.6 mm (0.460\") reach\u003c\/li\u003e\n\u003cli data-start=\"1173\" data-end=\"1196\"\u003e5\/8\" (16 mm) hex size\u003c\/li\u003e\n\u003cli data-start=\"1197\" data-end=\"1247\"\u003eTapered-seat design (no sealing washer required)\u003c\/li\u003e\n\u003cli data-start=\"1248\" data-end=\"1267\"\u003eHeat Range: \u003cstrong data-start=\"1262\" data-end=\"1267\"\u003e6\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1268\" data-end=\"1309\"\u003eFactory preset gap: \u003cstrong data-start=\"1290\" data-end=\"1309\"\u003e0.032\" (0.8 mm)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1310\" data-end=\"1340\"\u003eSolid terminal configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1342\" data-end=\"1369\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1345\" data-end=\"1369\"\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1371\" data-end=\"1482\"\u003eCommonly specified for numerous marine gasoline engines requiring \u003cstrong data-start=\"1437\" data-end=\"1450\"\u003eNGK BR6FS\u003c\/strong\u003e or equivalent plugs, including:\u003c\/p\u003e\n\u003ch3 data-start=\"1484\" data-end=\"1527\"\u003eMerCruiser Sterndrive \u0026amp; Inboard Engines\u003c\/h3\u003e\n\u003cul data-start=\"1528\" data-end=\"1714\"\u003e\n\u003cli data-start=\"1528\" data-end=\"1544\"\u003eMerCruiser 140\u003c\/li\u003e\n\u003cli data-start=\"1545\" data-end=\"1562\"\u003eMerCruiser 3.0L\u003c\/li\u003e\n\u003cli data-start=\"1563\" data-end=\"1583\"\u003eMerCruiser 4.3L V6\u003c\/li\u003e\n\u003cli data-start=\"1584\" data-end=\"1604\"\u003eMerCruiser 5.0L V8\u003c\/li\u003e\n\u003cli data-start=\"1605\" data-end=\"1625\"\u003eMerCruiser 5.7L V8\u003c\/li\u003e\n\u003cli data-start=\"1626\" data-end=\"1646\"\u003eMerCruiser 7.4L V8\u003c\/li\u003e\n\u003cli data-start=\"1647\" data-end=\"1714\"\u003eVarious carbureted and early TBI-equipped MerCruiser applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1716\" data-end=\"1745\"\u003eOther Marine Applications\u003c\/h3\u003e\n\u003cul data-start=\"1746\" data-end=\"1981\"\u003e\n\u003cli data-start=\"1746\" data-end=\"1781\"\u003eIndmar carbureted inboard engines\u003c\/li\u003e\n\u003cli data-start=\"1782\" data-end=\"1829\"\u003ePleasurecraft Marine (PCM) carbureted engines\u003c\/li\u003e\n\u003cli data-start=\"1830\" data-end=\"1864\"\u003eCrusader gasoline marine engines\u003c\/li\u003e\n\u003cli data-start=\"1865\" data-end=\"1910\"\u003eLegacy tournament ski and wake boat engines\u003c\/li\u003e\n\u003cli data-start=\"1911\" data-end=\"1981\"\u003eAdditional marine applications specifying AC Delco MR43T equivalents\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1983\" data-end=\"2115\"\u003eAlways verify spark plug requirements using the engine serial number, service manual, or engine specification decal before ordering.\u003c\/p\u003e\n\u003ch2 data-start=\"2117\" data-end=\"2138\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2120\" data-end=\"2138\"\u003eFitment Notice\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2140\" data-end=\"2396\"\u003eSpark plugs should always be matched to the exact engine model and serial number. Even engines with identical displacement may require different heat ranges, electrode designs, or gap settings depending on ignition system configuration and production year.\u003c\/p\u003e\n\u003ch2 data-start=\"2398\" data-end=\"2437\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2401\" data-end=\"2437\"\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2439\" data-end=\"2477\"\u003eReplace spark plugs when experiencing:\u003c\/p\u003e\n\u003cul data-start=\"2479\" data-end=\"2646\"\u003e\n\u003cli data-start=\"2479\" data-end=\"2494\"\u003eHard starting\u003c\/li\u003e\n\u003cli data-start=\"2495\" data-end=\"2507\"\u003eRough idle\u003c\/li\u003e\n\u003cli data-start=\"2508\" data-end=\"2529\"\u003eMisfires under load\u003c\/li\u003e\n\u003cli data-start=\"2530\" data-end=\"2549\"\u003ePoor acceleration\u003c\/li\u003e\n\u003cli data-start=\"2550\" data-end=\"2578\"\u003eIncreased fuel consumption\u003c\/li\u003e\n\u003cli data-start=\"2579\" data-end=\"2595\"\u003eCarbon fouling\u003c\/li\u003e\n\u003cli data-start=\"2596\" data-end=\"2616\"\u003eDamaged electrodes\u003c\/li\u003e\n\u003cli data-start=\"2617\" data-end=\"2646\"\u003eCorrosion or excessive wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2648\" data-end=\"2803\"\u003eMarine engines that spend extended periods trolling, idling, or in seasonal storage should have plugs inspected regularly as part of scheduled maintenance.\u003c\/p\u003e\n\u003ch2 data-start=\"2805\" data-end=\"2830\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2808\" data-end=\"2830\"\u003eInstallation Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2832\" data-end=\"3343\"\u003e\n\u003cli data-start=\"2832\" data-end=\"2912\"\u003eConfirm the required spark plug gap for your exact engine before installation.\u003c\/li\u003e\n\u003cli data-start=\"2913\" data-end=\"3051\"\u003eMany marine ignition systems utilize gap specifications ranging from \u003cstrong data-start=\"2984\" data-end=\"3004\"\u003e0.032\" to 0.045\"\u003c\/strong\u003e depending on engine model and ignition system.\u003c\/li\u003e\n\u003cli data-start=\"3052\" data-end=\"3138\"\u003eInstall into clean cylinder head threads and tighten to manufacturer specifications.\u003c\/li\u003e\n\u003cli data-start=\"3139\" data-end=\"3275\"\u003eNGK's corrosion-resistant plating eliminates the need for anti-seize compound unless specifically required by the engine manufacturer.\u003c\/li\u003e\n\u003cli data-start=\"3276\" data-end=\"3343\"\u003eUse a spark plug socket and torque wrench for final installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"3345\" data-end=\"3375\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3348\" data-end=\"3375\"\u003eCross Reference Numbers\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"3377\" data-end=\"3454\"\u003e\n\u003cli data-start=\"3377\" data-end=\"3388\"\u003eNGK BR6FS\u003c\/li\u003e\n\u003cli data-start=\"3389\" data-end=\"3399\"\u003eNGK 4323\u003c\/li\u003e\n\u003cli data-start=\"3400\" data-end=\"3416\"\u003eAC Delco MR43T\u003c\/li\u003e\n\u003cli data-start=\"3417\" data-end=\"3454\"\u003eBR6FS-10 (catalog reference format)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"3456\" data-end=\"3481\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3459\" data-end=\"3481\"\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"3483\" data-end=\"3852\"\u003eThe BR6FS remains one of the most trusted replacement plugs for classic marine GM-based engines because it combines excellent resistance to fouling with proven durability in high-load boating environments. When replacing plugs, inspect distributor components, ignition wires, and cap\/rotor assemblies at the same time to ensure the ignition system performs at its best.\u003c\/p\u003e\n\u003cp data-start=\"3854\" data-end=\"3923\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"3854\" data-end=\"3867\"\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564190924836,"sku":"NGK-BR6FS","price":5.64,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/4323-1-500x500.jpg?v=1772747797"},{"product_id":"west-1139","title":"NGK Spark Plug - CR5EH-9","description":"\u003cp\u003eThe \u003cstrong\u003eNGK CR5EH-9\u003c\/strong\u003e is a standard copper-core nickel spark plug used in select small four-stroke marine outboards, utility engines, generators, pumps, and compact power equipment where the manufacturer specifies the \u003cstrong\u003eCR5EH-9 \/ NGK 6689\u003c\/strong\u003e plug profile. It uses a compact 10 mm shell, resistor construction, partial-thread long-reach layout, and factory \u003cstrong\u003e0.9 mm \/ 0.036 in.\u003c\/strong\u003e gap for compatible engines that require this specific plug design.\u003c\/p\u003e\n\u003cp\u003eThis plug should be installed only where the engine service manual, equipment label, or factory application chart specifically calls for \u003cstrong\u003eNGK CR5EH-9\u003c\/strong\u003e, \u003cstrong\u003eNGK 6689\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine NGK standard spark plug.\u003c\/li\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eCR5EH-9\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eNGK stock number: \u003cstrong\u003e6689\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCopper-core nickel construction for standard service applications.\u003c\/li\u003e\n\u003cli\u003eBuilt-in resistor to help reduce ignition-related RFI noise.\u003c\/li\u003e\n\u003cli\u003eCompact 10 mm plug body for small-engine cylinder heads.\u003c\/li\u003e\n\u003cli\u003ePartial-thread \/ half-thread style reach layout.\u003c\/li\u003e\n\u003cli\u003eThread diameter: \u003cstrong\u003e10 mm \/ M10 x 1.0\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eTotal reach: \u003cstrong\u003e19 mm \/ 3\/4 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThreaded portion reference: \u003cstrong\u003e12.7 mm \/ 1\/2 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e16 mm \/ 5\/8 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e5\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFactory preset gap: \u003cstrong\u003e0.036 in. \/ 0.9 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eTerminal style: \u003cstrong\u003ethreaded stud\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select marine and utility engines where the factory plug chart calls for \u003cstrong\u003eNGK CR5EH-9 \/ 6689\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect \u003cstrong\u003eHonda BF8D\u003c\/strong\u003e FourStroke outboard applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eHonda BFP8D\u003c\/strong\u003e high-thrust outboard applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eHonda BF9.9D \/ BFP9.9D\u003c\/strong\u003e FourStroke outboard applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eHonda BF15D \/ BFP15D\u003c\/strong\u003e FourStroke outboard applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eHonda BF20D \/ BFP20D\u003c\/strong\u003e FourStroke outboard applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect compact generator, pump, and industrial small-engine applications requiring the same 10 mm partial-thread plug profile\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this spark plug only where the manufacturer's application chart specifically lists \u003cstrong\u003eCR5EH-9\u003c\/strong\u003e, \u003cstrong\u003e6689\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by exact engine model, serial number, model year, service manual, and factory spark plug chart before ordering. Spark plugs with the same 10 mm thread diameter can still differ in reach, thread length, heat range, seat style, terminal type, resistor specification, projection, and required gap. Installing the wrong plug can cause hard starting, misfire, poor idle, overheating, thread damage, piston contact, or ignition-system issues.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plugs during scheduled tune-up service or whenever the plug is worn, fouled, fuel-soaked, oil-contaminated, corroded, cracked, damaged, or causing hard starting, rough idle, weak acceleration, misfire, poor low-speed running, or no-start conditions. Small four-stroke outboards and utility engines that idle for long periods, troll at low speed, or sit in seasonal storage should have plugs inspected regularly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCheck the plug number and required gap against the engine service chart before installation. Install into clean, undamaged cylinder head threads and tighten to the manufacturer's torque specification for the exact engine. Avoid adding anti-seize unless the engine or spark plug manufacturer specifically calls for it, as lubricant can change clamping load and increase the risk of over-tightening in small aluminum cylinder heads.\u003c\/p\u003e\n\u003cp\u003eFor 10 mm plugs in small aluminum cylinder heads, use a torque wrench and follow the engine manufacturer's exact specification. Do not force the plug if resistance is felt; stop and inspect the threads before continuing.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK CR5EH-9\u003c\/strong\u003e — spark plug part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK 6689\u003c\/strong\u003e — NGK stock number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCR5EH9\u003c\/strong\u003e — alternate catalog formatting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonda 98059-55916\u003c\/strong\u003e — cross-reference; verify by engine model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonda 98059-55926\u003c\/strong\u003e — Honda reference; verify by engine model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDenso U16FER-9 \/ U16FER9\u003c\/strong\u003e — cross-reference; verify by application\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCR5EH-9\u003c\/strong\u003e should not be substituted by thread size alone. Its partial-thread reach layout is application-specific, and the wrong 10 mm plug can seat incorrectly or place the firing end at the wrong depth in the chamber. Matching the exact plug number, gap, terminal style, and service chart helps prevent ignition issues and protects small aluminum cylinder heads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564190990372,"sku":"NGK-CR5EH-9","price":20.32,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/bc7f4eca-8dab-4351-b173-7a471c21a1ed.png?v=1781203536"},{"product_id":"ngk-cr5hsb-spark-plug-6535","title":"NGK CR5HSB Spark Plug — 10mm, Heat Range 5, Resistor (NGK 6535)","description":"\u003ch2\u003eGenuine NGK CR5HSB Spark Plug\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eNGK CR5HSB (NGK 6535)\u003c\/strong\u003e is a genuine NGK standard copper-core nickel spark plug for select portable generators, small marine outboards, utility engines, and compact power equipment where the manufacturer specifies the CR5HSB \/ NGK 6535 plug profile. It is a compact 10 mm, short-reach, resistor-style plug with a flat gasket seat and solid terminal.\u003c\/p\u003e\u003cp\u003eInstall only where the engine service manual, equipment label, or factory application chart specifically calls for \u003cstrong\u003eNGK CR5HSB\u003c\/strong\u003e, \u003cstrong\u003eNGK 6535\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGenuine NGK standard spark plug\u003c\/li\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eCR5HSB\u003c\/strong\u003e | NGK stock number: \u003cstrong\u003e6535\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCopper-core nickel construction for standard small-engine service\u003c\/li\u003e\n\u003cli\u003eResistor-style plug to reduce ignition-related RFI noise\u003c\/li\u003e\n\u003cli\u003eCompact short-reach design for select small engines and portable equipment\u003c\/li\u003e\n\u003cli\u003eThread diameter: \u003cstrong\u003e10 mm \/ M10 × 1.0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThread reach: \u003cstrong\u003e12.7 mm \/ 1\/2 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e16 mm \/ 5\/8 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSeat style: \u003cstrong\u003eflat \/ gasket seat\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTip style: \u003cstrong\u003enon-projected\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e5\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFactory preset gap reference: \u003cstrong\u003e0.028 in. \/ 0.7 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSolid terminal configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplication Compatibility\u003c\/h2\u003e\u003cp\u003eCommon applications where the factory plug chart calls for NGK CR5HSB \/ 6535:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSelect Honda portable inverter generator applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect Honda small-engine applications using Honda plug references \u003cstrong\u003e98056-55757\u003c\/strong\u003e or \u003cstrong\u003e98056-55777\u003c\/strong\u003e, where confirmed by engine model\u003c\/li\u003e\n\u003cli\u003eSelect compact marine outboards and small outboard applications where the factory chart calls for CR5HSB\u003c\/li\u003e\n\u003cli\u003eSelect utility engines, commercial compactors, trimmers, and small power equipment where specified\u003c\/li\u003e\n\u003cli\u003eOther small-engine applications requiring a 10 mm, 12.7 mm reach, gasket-seat plug with the correct heat range and terminal style\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse this spark plug only where the equipment manufacturer’s application chart specifically lists \u003cstrong\u003eCR5HSB\u003c\/strong\u003e, \u003cstrong\u003e6535\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\u003ch2\u003eFitment Notice\u003c\/h2\u003e\u003cp\u003eConfirm fitment by exact equipment brand, engine model, serial number, service manual, and factory spark plug chart before ordering. Small-engine spark plugs can look similar but differ in thread reach, heat range, seat style, terminal style, resistor specification, projection, and required gap. Installing the wrong plug can cause hard starting, misfire, poor idle, overheating, thread damage, piston contact, or ignition-system issues.\u003c\/p\u003e\u003ch2\u003eWhen This Part Needs Replacement\u003c\/h2\u003e\u003cp\u003eReplace spark plugs during scheduled tune-up service or whenever the plug is worn, fouled, fuel-soaked, oil-contaminated, corroded, cracked, or damaged, or is causing hard starting, rough idle, stalling, weak acceleration, or no-start conditions. Portable generators and small outboards should have spark plugs inspected regularly as low-load operation, old fuel, moisture, and seasonal storage can accelerate fouling.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eCheck the plug number and required gap against the engine service chart before installation. Install into clean, undamaged cylinder head threads and tighten to the manufacturer’s torque specification. This is a gasket-seat plug — confirm the sealing washer is present and seats properly. Avoid adding anti-seize unless specifically called for by the engine or plug manufacturer, as lubricant can alter clamping load and increase the risk of over-tightening in small aluminum cylinder heads.\u003c\/p\u003e\u003ch2\u003eCross-Reference Part Numbers\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK:\u003c\/strong\u003e CR5HSB (part number), 6535 (stock number)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonda:\u003c\/strong\u003e 98056-55757 — verify by engine model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonda:\u003c\/strong\u003e 98056-55777 — verify by engine model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDenso:\u003c\/strong\u003e U16FSR-UB \/ U16FSRUB — verify by application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChampion:\u003c\/strong\u003e Z9Y — verify by application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorch:\u003c\/strong\u003e A5RTC — aftermarket cross-reference; verify by application\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\u003cp\u003eSKU \u003cstrong\u003eNGK-CR5HSB\u003c\/strong\u003e is a compact 10 mm spark plug under the NGK brand, commonly used in small engines where space, vibration, and low-load running are major factors. Match by exact plug number, reach, heat range, and gap rather than by equipment category alone. For generators and small outboards, a fresh plug is typically part of seasonal service alongside clean fuel, oil service, and air-filter inspection.\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564191055908,"sku":"NGK-CR5HSB","price":6.21,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/ffcd5bbe-642e-4564-93fd-fff6d0bc0bfe.png?v=1781202934"},{"product_id":"west-1141","title":"NGK Spark Plug - DCPR6E","description":"\u003cp\u003eThe \u003cstrong\u003eNGK DCPR6E\u003c\/strong\u003e is a standard copper-core nickel spark plug used in select small marine outboards, motorcycles, snowmobiles, ATVs, and powersports applications where the manufacturer specifies the \u003cstrong\u003eDCPR6E \/ NGK 3481\u003c\/strong\u003e plug profile. It features a resistor design to help reduce ignition-related radio frequency interference, a projected insulator nose for proper spark positioning in compatible combustion chambers, and a flat\/gasket seat for applications that require this plug style.\u003c\/p\u003e\n\u003cp\u003eThis plug should be installed only where the engine service manual, ignition label, or factory application chart specifically calls for \u003cstrong\u003eNGK DCPR6E\u003c\/strong\u003e, \u003cstrong\u003eNGK 3481\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine NGK standard spark plug.\u003c\/li\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eDCPR6E\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eNGK stock number: \u003cstrong\u003e3481\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCopper-core nickel construction for standard service applications.\u003c\/li\u003e\n\u003cli\u003eBuilt-in resistor to help reduce ignition-related RFI noise.\u003c\/li\u003e\n\u003cli\u003eProjected insulator nose design.\u003c\/li\u003e\n\u003cli\u003eThread diameter: \u003cstrong\u003e12 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThread reach: \u003cstrong\u003e19 mm \/ 3\/4 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e16 mm \/ 5\/8 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSeat style: \u003cstrong\u003eflat \/ gasket seat\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e6\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFactory preset gap: \u003cstrong\u003e0.036 in. \/ 0.9 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCommonly used in select small four-stroke marine outboards and powersports engines where specified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select engines where the factory plug chart calls for \u003cstrong\u003eNGK DCPR6E \/ 3481\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect \u003cstrong\u003eMercury \/ Mariner 4 HP, 5 HP, and 6 HP FourStroke\u003c\/strong\u003e outboards where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eTohatsu \/ Nissan small FourStroke\u003c\/strong\u003e outboards where specified\u003c\/li\u003e\n\u003cli\u003eSelect cruiser motorcycle applications where the manufacturer lists \u003cstrong\u003eDCPR6E\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSelect Honda VTX1300, Victory cruiser, Arctic Cat snowmobile\/ATV, and similar powersports applications where specified by plug chart\u003c\/li\u003e\n\u003cli\u003eOther marine, motorcycle, snowmobile, and utility engines that call for the same 12 mm, 19 mm reach, gasket-seat plug profile\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this spark plug only where the manufacturer's application chart specifically lists \u003cstrong\u003eDCPR6E\u003c\/strong\u003e, \u003cstrong\u003e3481\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by exact engine model, horsepower, serial number, year, service manual, and factory spark plug chart before ordering. Spark plugs with the same thread diameter can still differ in reach, heat range, seat style, terminal type, resistor specification, projected-tip design, and required gap. Installing the wrong plug can cause hard starting, misfire, poor idle, overheating, thread damage, piston contact, or ignition-system issues.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plugs during scheduled tune-up service or whenever the plug is worn, fouled, fuel-soaked, oil-contaminated, corroded, cracked, damaged, or causing hard starting, rough idle, hesitation, misfire, weak acceleration, or poor low-speed running. Small four-stroke outboards that idle, troll, or operate in damp and salt-air environments should have plugs inspected regularly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCheck the plug number and required gap against the engine service chart before installation. Install into clean, undamaged cylinder head threads and tighten to the manufacturer's torque specification for the exact engine. Because this is a gasket-seat plug, confirm the sealing washer is present and seats correctly. Avoid adding anti-seize unless the engine or spark plug manufacturer specifically calls for it, as lubricant can change clamping load and increase the risk of over-tightening in aluminum cylinder heads.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK DCPR6E\u003c\/strong\u003e — spark plug part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK 3481\u003c\/strong\u003e — NGK stock number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDCPR6E Standard\u003c\/strong\u003e — product style reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDCPR6E 3481\u003c\/strong\u003e — common catalog reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDCPR6E\u003c\/strong\u003e is a 12 mm, long-reach, gasket-seat resistor plug. It is commonly used in compact four-stroke marine and powersports engines, but it should not be substituted by thread size alone. Matching the exact plug number, gap, seat style, and heat range to the engine's service chart helps prevent misfire, thread damage, and incorrect combustion-chamber reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564191121444,"sku":"NGK-DCPR6E","price":8.27,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/943826dd-57eb-4261-aab0-15950fe378cd.png?v=1781202584"},{"product_id":"west-1142","title":"NGK Spark Plug - DPR6EA-9","description":"\u003cp\u003eThe \u003cstrong\u003eNGK DPR6EA-9\u003c\/strong\u003e is a standard copper-core nickel spark plug used in select marine outboards, motorcycles, ATVs, utility vehicles, and small-engine applications where the manufacturer specifies the \u003cstrong\u003eDPR6EA-9 \/ NGK 5531\u003c\/strong\u003e plug profile. It features a resistor design to help reduce ignition noise and radio frequency interference, along with a projected insulator nose for consistent combustion-chamber spark positioning in compatible engines.\u003c\/p\u003e\n\u003cp\u003eThis plug should be installed only where the engine service manual, ignition label, or application chart specifically calls for \u003cstrong\u003eNGK DPR6EA-9\u003c\/strong\u003e, \u003cstrong\u003eNGK 5531\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine NGK standard spark plug.\u003c\/li\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eDPR6EA-9\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eNGK stock number: \u003cstrong\u003e5531\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCopper-core nickel construction for standard service applications.\u003c\/li\u003e\n\u003cli\u003eResistor-style plug to help reduce ignition-related electrical interference.\u003c\/li\u003e\n\u003cli\u003eProjected insulator nose design.\u003c\/li\u003e\n\u003cli\u003eThread diameter: \u003cstrong\u003e12 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThread reach: \u003cstrong\u003e19 mm \/ 3\/4 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e18 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSeat style: \u003cstrong\u003eflat \/ gasket seat\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e6\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFactory preset gap: \u003cstrong\u003e0.036 in. \/ 0.9 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThreaded terminal configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select marine, motorcycle, ATV, and utility-engine applications where the factory plug chart calls for \u003cstrong\u003eNGK DPR6EA-9 \/ 5531\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect \u003cstrong\u003eMercury \/ Mariner 9.9 HP FourStroke\u003c\/strong\u003e outboard applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect Mercury applications using \u003cstrong\u003e827858Q \/ 33-827858\u003c\/strong\u003e plug references where confirmed by parts chart\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eYamaha F15 \/ F20 \/ F25 \/ T25\u003c\/strong\u003e outboard applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect Honda motorcycle and ATV applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect Kawasaki, Suzuki, Triumph, and other powersports applications where the plug chart calls for this profile\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this spark plug only where the manufacturer's application chart specifically lists \u003cstrong\u003eDPR6EA-9\u003c\/strong\u003e, \u003cstrong\u003e5531\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by exact engine model, serial number, year, service manual, and factory spark plug chart before ordering. Spark plugs with the same thread diameter can still differ in reach, heat range, seat style, terminal style, projected-tip design, resistor specification, and required gap. Installing the wrong plug can cause hard starting, misfire, poor idle, overheating, thread damage, piston contact, or ignition-system issues.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plugs during scheduled tune-up service or whenever the plug is worn, fouled, fuel-soaked, oil-contaminated, cracked, corroded, damaged, or causing hard starting, rough idle, hesitation, misfire, weak acceleration, or poor low-speed running. Marine outboards that troll, idle for long periods, or operate in damp and salt-air environments should have spark plugs inspected more regularly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCheck the plug number and gap against the engine service chart before installation. Install into clean, undamaged cylinder head threads and tighten to the manufacturer's torque specification for the exact engine. Because this is a gasket-seat plug, confirm the sealing washer is present and seats properly. Avoid adding anti-seize unless the engine or plug manufacturer specifically calls for it, as lubricant can change clamping load and increase the risk of over-tightening.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK DPR6EA-9\u003c\/strong\u003e — spark plug part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK 5531\u003c\/strong\u003e — NGK stock number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDPR6EA9\u003c\/strong\u003e — alternate catalog formatting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury 827858Q\u003c\/strong\u003e — marine reference; verify by engine serial number and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser \/ Mercury 33-827858\u003c\/strong\u003e — marine reference; verify by engine serial number and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYamaha 94701-00375\u003c\/strong\u003e — cross-reference; verify by model and plug chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYamaha 94700-00375\u003c\/strong\u003e — cross-reference; verify by model and plug chart\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDPR6EA-9\u003c\/strong\u003e is a 12 mm, gasket-seat plug with a projected tip and 0.9 mm preset gap. It should not be substituted based only on horsepower, brand, or heat range. Matching the exact plug number to the engine's service chart helps avoid incorrect reach, sealing style, or gap issues that can lead to misfire, thread damage, or poor running.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564191186980,"sku":"NGK-DPR6EA-9","price":6.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/bfff99a6-411c-4d15-84e9-d6b619086904.png?v=1781200240"},{"product_id":"ngk-lfr6a-11-spark-plug","title":"NGK Spark Plug LFR6A-11","description":"\u003cp\u003eThe NGK LFR6A-11 Spark Plug is a genuine NGK \u003cstrong\u003eV-Power\u003c\/strong\u003e resistor spark plug, also referenced by \u003cstrong\u003estock number 3672\u003c\/strong\u003e. It is designed to deliver reliable ignition performance with NGK's V-groove center electrode design and is used across selected marine, automotive, and small-engine applications where the exact plug specification is required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine \u003cstrong\u003eNGK LFR6A-11\u003c\/strong\u003e spark plug\u003c\/li\u003e\n\u003cli\u003eNGK \u003cstrong\u003estock number 3672\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV-Power\u003c\/strong\u003e design for improved ignitability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistor\u003c\/strong\u003e plug design\u003c\/li\u003e\n\u003cli\u003eSupportable specification references show \u003cstrong\u003e14 mm thread diameter\u003c\/strong\u003e, \u003cstrong\u003e1.25 mm thread pitch\u003c\/strong\u003e, \u003cstrong\u003e16 mm (5\/8\") hex\u003c\/strong\u003e, \u003cstrong\u003e1.1 mm (.044\") gap\u003c\/strong\u003e, and \u003cstrong\u003eheat range 6\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsed in selected marine, automotive, and small-engine applications. Exact compatibility depends on the engine manufacturer's required spark plug specification, so this plug should be matched by \u003cstrong\u003eapplication, engine model, and engine serial number where applicable\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSpark plug fitment can vary by engine family, year, cylinder-head design, and ignition specification. Always confirm compatibility by \u003cstrong\u003eengine model, serial number, and the manufacturer's recommended spark plug reference\u003c\/strong\u003e before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eReplace this spark plug during scheduled tune-up intervals, when misfire symptoms appear, when starting becomes harder than normal, or when inspection shows fouling, worn electrodes, or inconsistent spark performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInstall only after confirming the correct plug specification for the application. Supportable references show this plug uses a \u003cstrong\u003egasket seat\u003c\/strong\u003e and a \u003cstrong\u003e1.1 mm preset gap\u003c\/strong\u003e, so the replacement should be checked against the engine manufacturer's service requirement before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCurrent references identify this plug as \u003cstrong\u003eLFR6A-11\u003c\/strong\u003e, with \u003cstrong\u003eNGK stock number 3672\u003c\/strong\u003e. Shop-pack references also show \u003cstrong\u003eNGK 1119\u003c\/strong\u003e for the same plug designation in bulk packaging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSpark plugs are easy to overlook, but the exact plug code matters. Thread reach, heat range, seat style, and preset gap all need to match the engine's requirement, and using the correct plug is one of the simplest ways to protect starting performance, idle quality, and reliable ignition under load.\u003c\/p\u003e\n\u003cp\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564191547428,"sku":"NGK-LFR6A-11","price":15.9,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/cf52e4b6-6ca9-4a67-8a05-7821d7ece967.png?v=1776287020"},{"product_id":"west-1150","title":"NGK V-Power Spark Plug - TR5","description":"\u003cp\u003eThe \u003cstrong\u003eNGK TR5\u003c\/strong\u003e is a V-Power nickel spark plug used in select automotive, marine, powersports, and equipment applications where the engine manufacturer specifies the \u003cstrong\u003eTR5 \/ NGK 2238\u003c\/strong\u003e plug profile. It features NGK's V-groove center electrode design, which helps position the spark at the edge of the electrode for consistent ignition in compatible engines.\u003c\/p\u003e\n\u003cp\u003eThis plug should be installed only where the engine service manual, ignition label, or application chart specifically calls for \u003cstrong\u003eNGK TR5\u003c\/strong\u003e, \u003cstrong\u003eNGK 2238\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine NGK V-Power spark plug.\u003c\/li\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eTR5\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eNGK stock number: \u003cstrong\u003e2238\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eNickel spark plug with copper-core heat transfer.\u003c\/li\u003e\n\u003cli\u003eV-groove center electrode design.\u003c\/li\u003e\n\u003cli\u003eResistor-style spark plug.\u003c\/li\u003e\n\u003cli\u003eThread diameter: \u003cstrong\u003e14 mm \/ M14 x 1.25\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThread reach: \u003cstrong\u003e18 mm \/ 0.709 in.\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e5\/8 in. \/ 16 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSeat style: \u003cstrong\u003etapered seat\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e5\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFactory preset gap: \u003cstrong\u003e0.040 in. \/ 1.0 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCommonly compared with \u003cstrong\u003eNGK TR55\u003c\/strong\u003e, which shares similar plug geometry but is typically supplied with a wider preset gap.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select engines that call for the \u003cstrong\u003eNGK TR5 \/ 2238\u003c\/strong\u003e plug profile, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect \u003cstrong\u003eGeneral Motors LS-based V8\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003e4.8L, 5.3L, 5.7L, 6.0L, and 6.2L GM V8\u003c\/strong\u003e applications where the plug chart calls for TR5\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eFord V8\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect inboard marine, ski boat, powersports, UTV, and outdoor equipment applications where the engine manufacturer lists \u003cstrong\u003eTR5 \/ 2238\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eStock or mildly modified engines only when the required heat range, reach, seat style, and gap match the engine specification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this spark plug only where the manufacturer's plug chart specifically calls for \u003cstrong\u003eTR5\u003c\/strong\u003e, \u003cstrong\u003e2238\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by exact year, make, model, engine, service manual, and factory spark plug chart before ordering. Spark plugs with the same thread size can still differ in reach, heat range, seat style, terminal style, resistor specification, projected-tip design, and required gap. Installing the wrong plug can cause hard starting, misfire, poor idle, thread damage, overheating, piston contact, or ignition-system problems.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plugs during scheduled tune-up service or whenever the plugs are fouled, worn, fuel-soaked, oil-contaminated, corroded, cracked, damaged, or causing hard starting, rough idle, hesitation, misfire, reduced throttle response, or poor fuel economy. Engines that idle frequently, run under heavy load, or operate in damp marine environments should have spark plugs inspected more regularly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm the plug number and gap before installation. Because the TR5 uses a \u003cstrong\u003etapered seat\u003c\/strong\u003e, it does not use a separate sealing gasket. Install into clean, undamaged cylinder head threads and tighten to the engine manufacturer's torque specification. Avoid adding anti-seize unless the engine or spark plug manufacturer specifically calls for it, as lubricant can change the clamping load and increase the risk of over-tightening.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK TR5\u003c\/strong\u003e — spark plug part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK 2238\u003c\/strong\u003e — NGK stock number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTR5 V-Power\u003c\/strong\u003e — product style reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTR55\u003c\/strong\u003e — related NGK reference with different preset gap; verify required gap before substitution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTR5\u003c\/strong\u003e and \u003cstrong\u003eTR55\u003c\/strong\u003e are often discussed together because they are similar in plug style and heat range, but the preset gap differs. The TR5 is commonly supplied at \u003cstrong\u003e0.040 in.\u003c\/strong\u003e, while TR55 applications often call for a wider preset gap. Always match the plug number and gap to the engine's service chart instead of choosing by engine family alone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564191744036,"sku":"NGK-TR5","price":6.05,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/3edfde63-bb23-4720-bf9f-d18d8ab5520a.png?v=1781198846"},{"product_id":"west-1151","title":"NGK Iridium IX Spark Plug - TR55IX","description":"\u003cp\u003eThe \u003cstrong\u003eNGK TR55IX\u003c\/strong\u003e is an Iridium IX spark plug used in select automotive, marine, performance, and equipment applications where the engine manufacturer specifies the \u003cstrong\u003eTR55IX \/ NGK 7164\u003c\/strong\u003e plug profile. It is commonly used as an iridium upgrade from standard nickel TR-series plugs when the required reach, tapered seat, heat range, terminal style, and gap match the engine's factory specification.\u003c\/p\u003e\n\u003cp\u003eThis plug features NGK's fine-wire iridium center electrode design for strong ignitability, stable spark performance, and improved resistance to fouling in compatible engines.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine NGK Iridium IX spark plug.\u003c\/li\u003e\n\u003cli\u003eNGK part number: \u003cstrong\u003eTR55IX\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eNGK stock number: \u003cstrong\u003e7164\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eIridium center electrode for stable spark and long service performance.\u003c\/li\u003e\n\u003cli\u003eProjected-tip design.\u003c\/li\u003e\n\u003cli\u003eResistor-style spark plug.\u003c\/li\u003e\n\u003cli\u003eSolid terminal configuration.\u003c\/li\u003e\n\u003cli\u003eThread diameter: \u003cstrong\u003e14 mm \/ M14 x 1.25\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThread reach: \u003cstrong\u003e17.5 mm listed \/ 18 mm class\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHex size: \u003cstrong\u003e5\/8 in. \/ 16 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSeat style: \u003cstrong\u003etapered seat\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e5\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCommon preset gap reference: \u003cstrong\u003e0.059 in. \/ 1.5 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eUsed where the application chart calls for the TR55IX plug profile.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select engines that call for the \u003cstrong\u003eNGK TR55IX \/ 7164\u003c\/strong\u003e plug profile, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect \u003cstrong\u003eGeneral Motors LS-based V8\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003e4.8L, 5.3L, 5.7L LS1\/LS6, 6.0L, and 6.2L GM V8\u003c\/strong\u003e applications where the plug chart calls for TR55IX\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eFord 4.6L and 5.4L V8\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect EFI marine inboard and sterndrive engine applications where the engine manufacturer's plug chart confirms TR55IX\u003c\/li\u003e\n\u003cli\u003eSelect performance, street, and marine applications using the correct TR-series tapered-seat plug geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this spark plug only where the manufacturer's spark plug chart specifically calls for \u003cstrong\u003eTR55IX\u003c\/strong\u003e, \u003cstrong\u003e7164\u003c\/strong\u003e, or an approved equivalent.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by exact year, make, model, engine, service manual, ignition system, and factory spark plug chart before ordering. Spark plugs with similar NGK part numbers can still differ in reach, gap, heat range, seat style, projected-tip design, terminal type, and electrode design. Installing the wrong plug can cause hard starting, misfire, poor idle, thread damage, overheating, piston contact, or ignition-system issues.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plugs during scheduled tune-up service or whenever plugs are fouled, worn, fuel-soaked, oil-contaminated, cracked, corroded, damaged, or causing hard starting, rough idle, hesitation, misfire, reduced throttle response, or poor fuel economy. Marine engines, tow vehicles, and high-load applications should have spark plugs inspected regularly because ignition problems often show up first under acceleration or sustained load.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCheck the plug number and required gap against the engine's service chart before installation. The TR55IX uses a \u003cstrong\u003etapered seat\u003c\/strong\u003e, so it does not use a separate sealing washer. Install into clean, undamaged cylinder head threads and tighten to the engine manufacturer's torque specification.\u003c\/p\u003e\n\u003cp\u003eAvoid adding anti-seize unless the engine or plug manufacturer specifically calls for it, as lubricant changes thread friction and can lead to over-tightening. If gap adjustment is required, adjust only the ground strap and avoid prying against the fine iridium center electrode.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK TR55IX\u003c\/strong\u003e — spark plug part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK 7164\u003c\/strong\u003e — NGK stock number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTR55IX Iridium IX\u003c\/strong\u003e — product style reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTR5\u003c\/strong\u003e — related NGK V-Power plug profile with a different electrode design and typical preset gap; verify before substitution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTR55\u003c\/strong\u003e — related NGK plug profile with different construction; verify by application chart before substitution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTR55IX\u003c\/strong\u003e should not be selected only because an engine uses a GM LS, Ford V8, or marine V8 platform. The correct plug depends on the engine's required gap, ignition system, cylinder head thread style, heat range, and service chart. The wide \u003cstrong\u003e0.059 in.\u003c\/strong\u003e gap reference is common for TR55-style applications, but some engines require a narrower gap, especially after ignition updates, forced induction, or marine service changes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564191809572,"sku":"NGK-TR55IX","price":18.37,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/82646e23-7444-452c-bb78-6e22065469ee.png?v=1781200880"},{"product_id":"west-1152","title":"NGK SPARK PLUG NGK-YR5","description":"\u003cp\u003eThe NGK YR5 is a genuine \u003cstrong\u003eNGK V-Power\u003c\/strong\u003e resistor spark plug, also identified by \u003cstrong\u003estock number 7052\u003c\/strong\u003e. It is designed to deliver reliable ignition performance with NGK's V-groove center electrode design and is used in selected marine and other engine applications where the exact plug specification is required.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine \u003cstrong\u003eNGK YR5\u003c\/strong\u003e spark plug\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNGK stock number 7052\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV-Power\u003c\/strong\u003e design for improved ignitability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistor\u003c\/strong\u003e spark plug\u003c\/li\u003e\n\u003cli\u003eCommon supportable specifications include \u003cstrong\u003e14 mm thread\u003c\/strong\u003e, \u003cstrong\u003e0.460 in. reach\u003c\/strong\u003e, and \u003cstrong\u003etapered seat\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUsed in selected marine and other engine applications. Exact compatibility depends on the engine manufacturer's required spark plug specification, so this plug should be matched by \u003cstrong\u003eapplication, engine model, and engine serial number where applicable\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSpark plug fitment can vary by engine family, cylinder-head design, seat style, and ignition specification. Always confirm compatibility by \u003cstrong\u003eengine model, serial number, and the manufacturer's recommended spark plug reference\u003c\/strong\u003e before ordering.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this spark plug during scheduled tune-up intervals, when misfire symptoms appear, when starting becomes harder than normal, or when inspection shows fouling, worn electrodes, or inconsistent spark performance.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInstall only after confirming the correct plug specification for the application. Because this plug is commonly referenced as a \u003cstrong\u003eresistor\u003c\/strong\u003e, \u003cstrong\u003etapered-seat\u003c\/strong\u003e design with specific thread and reach dimensions, it should be matched carefully to the engine's required plug type before installation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCurrent references identify this plug as \u003cstrong\u003eYR5\u003c\/strong\u003e, with \u003cstrong\u003eNGK stock number 7052\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSpark plugs are easy to treat as generic, but small differences in reach, seat style, and heat range matter. Matching the exact plug code is the easiest way to avoid rough running, hard starts, and repeat tune-up work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564191875108,"sku":"NGK-YR5","price":6.05,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/674361e6-e759-4838-9062-fb842038e640.png?v=1776318277"},{"product_id":"west-1729","title":"DIST.TUNE-UP KIT   (AP-1007)","description":"DIST.TUNE-UP KIT   (AP-1007)","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564242141220,"sku":"SIE-18-5256","price":63.53,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/SIE-18-5256-source.jpg?v=1792122960"},{"product_id":"west-1799","title":"Sierra MagForce 4-Cylinder MerCruiser 470 Spark Plug Wire Set - 18-8808-2","description":"\u003cp\u003eThe \u003cstrong\u003eSierra 18-8808-2\u003c\/strong\u003e is a MagForce premium marine \u003cstrong\u003e4-cylinder spark plug wire set\u003c\/strong\u003e for select vintage MerCruiser inline-4 sterndrive engines using compatible conventional distributor ignition systems. This 5-lead kit is commonly associated with classic MerCruiser \u003cstrong\u003e3.7L \/ 470-series\u003c\/strong\u003e engines where the ignition layout, distributor style, coil location, and wire lengths match the Sierra application chart.\u003c\/p\u003e\n\u003cp\u003eBuilt for marine engine compartments, this wire set helps deliver consistent ignition output while providing suppression against ignition-related radio frequency interference around onboard electronics.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSierra MagForce premium marine spark plug wire set.\u003c\/li\u003e\n\u003cli\u003eSierra part number: \u003cstrong\u003e18-8808-2\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDesigned for select \u003cstrong\u003e4-cylinder MerCruiser\u003c\/strong\u003e sterndrive applications.\u003c\/li\u003e\n\u003cli\u003eIncludes \u003cstrong\u003e5 total leads\u003c\/strong\u003e: 4 spark plug wires plus 1 coil wire.\u003c\/li\u003e\n\u003cli\u003e8 mm heavy-duty ignition wire profile.\u003c\/li\u003e\n\u003cli\u003eSpiral-wound stainless-style conductor design for ignition suppression and spark delivery.\u003c\/li\u003e\n\u003cli\u003eSilicone-style jacketing and boots for marine heat and moisture exposure.\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant terminal construction for marine ignition service.\u003c\/li\u003e\n\u003cli\u003eIntended for compatible conventional distributor ignition layouts where specified by application chart.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eKit Contents \u0026amp; Wire Lengths\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis set includes the following wire lengths:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e1 coil wire — 13 in.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 spark plug wire — 23 in.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 spark plug wire — 26 in.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 spark plug wire — 34 in.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 spark plug wire — 39 in.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm each lead length and terminal end against the original wire set before installation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select vintage MerCruiser 4-cylinder sterndrive engines by model, serial range, ignition system, and application chart, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 470\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 485\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 488\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 3.7L\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 3.7LX\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003e165 HP to 190 HP 3.7L inline-4\u003c\/strong\u003e MerCruiser platforms where the distributor style and wire routing match this kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this wire set only where the Sierra application chart or engine service information confirms \u003cstrong\u003e18-8808-2\u003c\/strong\u003e as the correct replacement.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by engine serial number, ignition system, distributor cap style, coil location, plug boot angle, terminal style, and original wire routing before ordering. MerCruiser 3.7L \/ 470-series engines can have different ignition components depending on production range and service history, so engine family alone is not enough to confirm the correct wire set.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plug wires if the engine has hard starting, rough idle, misfire under load, weak acceleration, visible arcing, burned insulation, cracked boots, corroded terminals, loose plug connections, or high resistance in one or more leads. Wires should also be inspected during distributor cap, rotor, spark plug, points, condenser, and seasonal ignition service.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace one wire at a time to preserve the correct firing order. Match each new lead to the closest original length and route it through the factory wire separators or retainers. Keep wires away from exhaust manifolds, belts, pulleys, sharp brackets, and hot engine surfaces. Push each boot fully onto the spark plug, distributor cap, and coil terminal until it seats securely.\u003c\/p\u003e\n\u003cp\u003eFor conventional ignition systems, inspect the distributor cap, rotor, points, condenser, and point gap while replacing the wires. Worn or pitted ignition points can still cause weak spark even with a new wire set installed.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Cross-Reference Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSierra 18-8808-2\u003c\/strong\u003e — MagForce premium marine spark plug wire set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury 84-816761Q6\u003c\/strong\u003e — cross-reference; verify by engine and ignition layout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury 84-813720A6\u003c\/strong\u003e — cross-reference; verify by engine and ignition layout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury 84-43376A6\u003c\/strong\u003e — cross-reference; verify by engine and ignition layout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMallory 9-28014\u003c\/strong\u003e — cross-reference; verify by application\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e18-8808-2\u003c\/strong\u003e is a layout-specific wire set for classic 4-cylinder MerCruiser ignition systems. Before replacing wires, confirm the distributor type and compare the existing lead lengths. On older 470-series engines, ignition complaints often come from a combination of aged wires, worn cap and rotor contacts, incorrect point gap, and heat-damaged routing near the exhaust side of the engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564266717220,"sku":"SIE-18-8808-2","price":121.26,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/4b8c6f72-200b-41bc-b60d-49ffdcce3eeb.png?v=1781202000"},{"product_id":"west-1800","title":"Sierra V8 Marine Spark Plug Wire Set - 18-8820-1","description":"\u003cp\u003eThe \u003cstrong\u003eSierra 18-8820-1\u003c\/strong\u003e is a premium marine \u003cstrong\u003e8-cylinder spark plug wire set\u003c\/strong\u003e for select V8 sterndrive and inboard engines using compatible electronic ignition systems. This suppression-style wire set is built for marine engine compartments where heat, vibration, moisture, and ignition noise control are important. It is commonly used as an aftermarket replacement wire kit for select Delco EST, EFI, OMC Cobra, PCM, Crusader, MerCruiser, and Volvo Penta V8 applications where the engine's ignition layout and wire lengths match the kit.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSierra premium marine spark plug wire set.\u003c\/li\u003e\n\u003cli\u003eSierra part number: \u003cstrong\u003e18-8820-1\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e8-cylinder \/ V8 wire set.\u003c\/li\u003e\n\u003cli\u003eIncludes \u003cstrong\u003e9 leads total\u003c\/strong\u003e: 8 spark plug wires plus 1 coil wire.\u003c\/li\u003e\n\u003cli\u003eDesigned for compatible marine electronic ignition applications.\u003c\/li\u003e\n\u003cli\u003eSuppression-style construction helps reduce ignition-related RFI\/EMI noise around onboard electronics.\u003c\/li\u003e\n\u003cli\u003eHigh-temperature silicone-style jacketing and boots for marine engine compartment service.\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant terminal design for marine ignition environments.\u003c\/li\u003e\n\u003cli\u003eIntended for select V8 sterndrive and inboard engines where this wire set is specified by application chart.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eKit Contents \u0026amp; Wire Lengths\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis set includes the following wire lengths:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e2 wires — 27 in.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 wire — 32 in.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2 wires — 38 in.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3 wires — 42 in.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 coil wire — 14 in.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the wire lengths and terminal ends against the original set before installation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select V8 marine engines using compatible distributor-style electronic ignition systems, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelect \u003cstrong\u003eOMC Cobra V8\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003e5.0L and 5.7L GM-based V8\u003c\/strong\u003e sterndrive and inboard applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003e5.0L and 5.8L Ford-based V8\u003c\/strong\u003e marine applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eMerCruiser V8\u003c\/strong\u003e applications with compatible Delco EST or EFI ignition layouts where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eVolvo Penta V8\u003c\/strong\u003e applications with compatible distributor ignition layouts where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003ePCM \/ Pleasurecraft Marine\u003c\/strong\u003e and \u003cstrong\u003eCrusader\u003c\/strong\u003e V8 applications where the wire routing and terminal style match\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this wire set only where the Sierra application chart, engine model, distributor type, and existing wire layout confirm \u003cstrong\u003e18-8820-1\u003c\/strong\u003e as the correct replacement.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by engine manufacturer, model year, engine displacement, distributor type, ignition system, coil location, terminal style, and wire routing before ordering. V8 marine engines can use similar-looking wire sets with different terminal ends, coil-wire lengths, distributor cap styles, plug boot angles, and routing requirements. Matching only by engine displacement is not enough.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace spark plug wires if the engine has hard starting, rough idle, misfire under load, weak acceleration, visible arcing, cracked boots, burned insulation, corrosion at the terminals, loose plug connections, or high resistance in one or more leads. Wires should also be inspected during cap, rotor, spark plug, and seasonal ignition service, especially on engines exposed to salt air, bilge moisture, and exhaust manifold heat.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace one wire at a time to preserve the correct firing order. Match each new wire to the closest original length and route it through the factory wire separators or loom supports. Keep wires away from exhaust manifolds, sharp brackets, belts, pulleys, and hot engine surfaces. Push each boot fully onto the spark plug, distributor cap, and coil terminal until it seats securely. Use dielectric grease only where appropriate inside the boot area, not on the metal terminal contact surface.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Cross-Reference Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSierra 18-8820-1\u003c\/strong\u003e — premium marine spark plug wire set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOMC \/ Cobra 503754\u003c\/strong\u003e — cross-reference; verify by engine and ignition layout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMallory 9-28029\u003c\/strong\u003e — cross-reference; verify by application\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eMarine spark plug wire sets should be matched by ignition system and routing, not just by cylinder count. The correct wire set needs the right plug boots, distributor terminals, coil wire, suppression design, and lead lengths. Poorly routed or incorrect wires can cause misfire, radio interference, premature insulation failure, and repeat ignition troubleshooting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564266749988,"sku":"SIE-18-8820-1","price":174.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/a483549e-1d00-4c08-a624-c3fb87dca11b.png?v=1781201332"},{"product_id":"yamaha-spark-plug-cap-assy-663-82370-01-00","title":"Yamaha Spark Plug Cap Assembly - 663-82370-01-00","description":"\u003ch2\u003eYamaha Spark Plug Cap Assembly\u003c\/h2\u003e\u003cp\u003eKeep your outboard's ignition system firing cleanly with this OEM Yamaha Spark Plug Cap Assembly (Part No. 663-82370-01-00). Designed as a direct replacement for Yamaha outboard engines, this cap assembly seals the connection between the spark plug wire and plug, protecting against moisture, vibration, and electrical interference — all common challenges in the marine environment.\u003c\/p\u003e\u003cp\u003eA worn or cracked plug cap can cause misfires, hard starting, and rough idle. Replacing it with a genuine OEM part restores reliable ignition performance and helps protect your coil and plug wire from premature wear.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Yamaha replacement — direct fit, no modification required\u003c\/li\u003e\n\u003cli\u003eSeals against moisture and salt spray\u003c\/li\u003e\n\u003cli\u003eReduces electrical interference for consistent spark delivery\u003c\/li\u003e\n\u003cli\u003eDurable construction suited to marine operating conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Spark Plugs\u003c\/h3\u003e\u003cp\u003ePair this cap with compatible NGK spark plugs for a complete ignition service:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ngk-4\"\u003eNGK Spark Plug - DR7EA\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lns-132\"\u003eNGK Spark Plug - DPR7EA-9\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRelated Ignition Components\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"\/products\/yamaha-58\"\u003eYamaha F9.9–F25 Outboard Ignition Coil Assembly - 6F5-85570-13-00\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e Recommended when servicing spark plugs on Yamaha outboards — especially during annual tune-ups or when diagnosing misfires and rough running. Inspect the cap for cracks, carbon tracking, or a loose fit whenever plugs are changed. Replacing the cap at the same time as the plugs is a low-cost step that prevents repeat service calls.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart No.:\u003c\/strong\u003e 663-82370-01-00  |  \u003cstrong\u003eSKU:\u003c\/strong\u003e 663-82370-01-00\u003c\/p\u003e","brand":"YAM","offers":[{"title":"Default Title","offer_id":43564298666020,"sku":"663-82370-01-00","price":20.87,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/images_a41235ec-b16c-489d-aa7c-2669cc0b9b48.jpg?v=1785960368"},{"product_id":"yamaha-78","title":"NGK Spark Plug CR6HSB","description":"\u003cp\u003eThe NGK \u003cstrong\u003eCR6HSB\u003c\/strong\u003e is a resistor-type spark plug for compatible small-engine and marine ignition applications. It is used where the engine manufacturer or existing plug specifically calls for \u003cstrong\u003eCR6HSB\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNGK spark plug\u003c\/li\u003e\n\u003cli\u003ePart number: \u003cstrong\u003eCR6HSB\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eResistor-style plug, indicated by the \u003cstrong\u003eR\u003c\/strong\u003e in the NGK number\u003c\/li\u003e\n\u003cli\u003eHeat range: \u003cstrong\u003e6\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eShort-reach small-engine plug style\u003c\/li\u003e\n\u003cli\u003eUsed for compatible gasoline engine ignition systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch1\u003eYamaha: F4A \/ F6A\u003c\/h1\u003e\n\u003ch2\u003eAlso compatible with several Johnson, Envirude, Suzuki and Force Outboards\u003c\/h2\u003e\n\u003cp\u003e. Use where the engine manual, parts diagram, or existing installed spark plug calls for \u003cstrong\u003eNGK CR6HSB\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm the exact plug number before ordering. NGK plugs with similar numbers, such as \u003cstrong\u003eCR6HSA\u003c\/strong\u003e, may look close but can differ by electrode\/terminal configuration or application requirement.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace when the engine has hard starting, misfire, rough idle, poor acceleration, fouling, worn electrodes, cracked porcelain, or weak spark.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCheck plug gap against the engine manufacturer's specification before installation. Install into clean threads, avoid overtightening, and use the engine service manual torque specification.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNGK CR6HSB\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSpark plug fitment should be matched by exact plug number whenever possible. Heat range, reach, resistor type, and terminal style all matter, especially on small marine and powersport engines where similar-looking NGK plugs may not interchange correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"YAM","offers":[{"title":"Default Title","offer_id":43564301025316,"sku":"94702-00372-00","price":5.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/e8c16ece-d9fb-41fb-a220-9bd54c0971ad.png?v=1778813824"},{"product_id":"ngk-5","title":"SPARK PLUG, #2238","description":"SPARK PLUG, #2238","brand":"FVW","offers":[{"title":"Default Title","offer_id":44024966283300,"sku":"TR5","price":6.3,"currency_code":"CAD","in_stock":false}]},{"product_id":"quicksilver-inboard-stern-drive-tune-up-kit-710-392-6324q1","title":"Quicksilver Inboard \u0026 Stern Drive Tune-Up Kit – Prestolite Ignition – 6324Q1","description":"\u003cp\u003eKeep your inboard or stern drive engine running at peak performance with this Quicksilver tune-up kit, engineered specifically for \u003cstrong\u003ePrestolite distributors with screw-down caps\u003c\/strong\u003e. Compatible with 4-cylinder, V6, and V8 engine configurations, this kit delivers everything needed to restore reliable ignition timing and spark in a single purchase.\u003c\/p\u003e\n\n\u003cp\u003eQuicksilver ignition components are built to OEM specifications, ensuring proper fit and function without the guesswork of aftermarket substitutes.\u003c\/p\u003e\n\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDistributor cap (screw-down style — Prestolite fitment)\u003c\/li\u003e\n\u003cli\u003eRotor\u003c\/li\u003e\n\u003cli\u003ePoints set\u003c\/li\u003e\n\u003cli\u003eCondenser\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePrestolite distributor — screw-down cap style\u003c\/li\u003e\n\u003cli\u003e4-cylinder, V6, and V8 inboard and stern drive engines\u003c\/li\u003e\n\u003cli\u003eMerCruiser applications using Prestolite ignition systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOEM-specification components for accurate fit and reliable performance\u003c\/li\u003e\n\u003cli\u003eComplete kit — cap, rotor, points, and condenser in one package\u003c\/li\u003e\n\u003cli\u003eDesigned for Prestolite screw-down cap distributors\u003c\/li\u003e\n\u003cli\u003eRestores proper ignition timing and reduces misfires\u003c\/li\u003e\n\u003cli\u003eSuitable for both scheduled maintenance and breakdown replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBest Use Cases\u003c\/h2\u003e\n\u003cp\u003eThis kit is the right choice for annual engine service on MerCruiser inboard and stern drive engines equipped with a Prestolite distributor. It’s also the go-to solution when diagnosing rough idle, hard starting, or misfires traced to worn ignition components. Confirm your distributor cap style (screw-down vs. snap-in) before ordering — this kit is for screw-down cap applications only.\u003c\/p\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003eThe Prestolite ignition system was widely used on older MerCruiser inboard and stern drive engines through the late 1980s and into the 1990s. This kit covers the most common service interval items in one box, making it ideal for annual pre-season tune-ups or when pulling an engine that’s been sitting. The key fitment check is the cap style: screw-down caps use a threaded retention ring, while snap-in caps use spring clips — they are not interchangeable. If you’re unsure which distributor your engine has, cross-reference your engine serial number against the MerCruiser parts catalog. Part number: 6324Q1. 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