{"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":10.36,"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","url":"https:\/\/marisolmarine.com\/products\/west-1150","provider":"Marisol Marine Company","version":"1.0","type":"link"}