{"product_id":"marine-spark-plug-wire-set-for-mercruiser-sterndrive-6-cylinder-replaces-84-816761a8-sierra-magforce","title":"Sierra 18-8809-1 MagForce Spark Plug Wire Set for 6-Cylinder Mercruiser Sterndrive Engines","description":"\u003cp\u003eThe Sierra 18-8809-1 is a MagForce spark plug wire set built for 6-cylinder Mercruiser sterndrive engines. Each wire uses a Kevlar-reinforced core paired with a stainless steel wound conductor, a combination chosen to deliver consistent electrical conductivity while standing up to the vibration, heat, and moisture found in a marine engine compartment. The wires are jacketed in silicone with silicone boots at each connection point, protecting against high underhood temperatures while also providing superior RFI suppression so the set will not interfere with sensitive onboard electronics such as fuel injection and ignition control modules.\u003c\/p\u003e\u003cp\u003eConnection points are finished with corrosion-resistant stainless steel spark plug and distributor terminals, maintaining strong electrical contact over time in a saltwater or freshwater environment. The set is designed for conventional ignition systems and is intended for 6-cylinder Mercruiser sterndrive applications. As with any ignition component, confirm fitment against your engine's specifications before ordering.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-8809-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cylinders:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Silicone, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Conventional\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.11 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282194383\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 84-816761Q8, 84-816761A8, 84-813720A8, 84-43376A8\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003e6-cylinder Mercruiser sterndrive engines with conventional ignition systems.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e84-816761Q8\u003c\/li\u003e\n\u003cli\u003e84-816761A8\u003c\/li\u003e\n\u003cli\u003e84-813720A8\u003c\/li\u003e\n\u003cli\u003e84-43376A8\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-8809-1 spark plug wire set fit?\u003c\/strong\u003e The 18-8809-1 is built for 6-cylinder Mercruiser sterndrive engines running a conventional ignition system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-8809-1 wire set a direct replacement for OEM Mercruiser wires?\u003c\/strong\u003e Yes, it cross-references to Mercruiser stern drive part numbers 84-816761Q8, 84-816761A8, 84-813720A8, and 84-43376A8, so it installs as a direct replacement for those OEM sets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material are the wires made from?\u003c\/strong\u003e Each wire in the Sierra 18-8809-1 set combines a Kevlar core with a stainless steel wound conductor, wrapped in a silicone jacket with silicone boots.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many cylinders does this wire set cover?\u003c\/strong\u003e This set is configured for 6-cylinder engines, matching the cylinder count of the Mercruiser sterndrive engines it is designed for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill these wires cause interference with onboard electronics?\u003c\/strong\u003e No, the 18-8809-1 set is designed with superior RFI suppression specifically to avoid interfering with sensitive electronic systems on the engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre the terminals on this wire set corrosion resistant?\u003c\/strong\u003e Both the spark plug end and distributor end terminals on the 18-8809-1 are stainless steel, chosen for corrosion resistance and consistent conductivity in a marine environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat ignition type is this wire set compatible with?\u003c\/strong\u003e Sierra 18-8809-1 is built for conventional ignition systems, not electronic or coil-on-plug setups.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-8809-1 spark plug wire set weigh?\u003c\/strong\u003e The complete set weighs 1.11 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many wires are included in the set?\u003c\/strong\u003e The Sierra 18-8809-1 is sold as one complete 6-cylinder wire set, listed as 1 item.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the silicone jacketing hold up to engine heat?\u003c\/strong\u003e Yes, the silicone jacketing and boots on the 18-8809-1 are designed for high-temperature protection in the engine compartment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this part?\u003c\/strong\u003e The Sierra 18-8809-1 spark plug wire set carries UPC 808282194383.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988434956507,"sku":"SIE-18-8809-1","price":59.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-8809-1__00610.1739458888.500.750.jpg?v=1785188920","url":"https:\/\/www.goodvibesmarina.com\/products\/marine-spark-plug-wire-set-for-mercruiser-sterndrive-6-cylinder-replaces-84-816761a8-sierra-magforce","provider":"Good Vibes Marina","version":"1.0","type":"link"}