{"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":165.86,"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","url":"https:\/\/marisolmarine.com\/products\/west-1800","provider":"Marisol Marine Company","version":"1.0","type":"link"}