{"product_id":"sierra-18-8842-1-spark-plug-wire-set-8-cylinder-omc-marine-engines-conventional-ignition","title":"Sierra 18-8842-1 Spark Plug Wire Set, 8-Cylinder Conventional Ignition, White","description":"\u003cp\u003eThe Sierra 18-8842-1 is a complete spark plug wire set built for 8-cylinder marine engines with a conventional distributor ignition. Each wire uses a durable stainless steel wound conductor engineered for maximum horsepower and engine performance while providing superior RFI suppression for sensitive onboard electronics. A Kevlar core runs through every wire for long-term durability and long service life, and the set is finished with premium silicone jacketing and silicone boots that hold up under high underhood temperatures. Corrosion resistant stainless steel terminals at both the spark plug and distributor ends maintain strong conductivity in the marine environment, where moisture and salt air quickly degrade lesser materials.\u003c\/p\u003e\u003cp\u003eThe set is supplied in white and includes wires sized for a full 8-cylinder conventional distributor layout: one coil wire, two individually sized spark plug wires, and two pairs of matched-length spark plug wires, so every cylinder position is covered without cutting or splicing. This makes the 18-8842-1 a straightforward, complete-set replacement when an aging or cracked plug wire set is causing misfires, rough idle, or ignition noise on an 8-cylinder inboard or sterndrive engine running a conventional (non-electronic) distributor.\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 18-8842-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinders:\u003c\/strong\u003e 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Conventional\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Silicone, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Spark Plug, Distributor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Type:\u003c\/strong\u003e Spark Plug Wire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil Wire Length:\u003c\/strong\u003e 9 inches (1)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Plug Wire Lengths:\u003c\/strong\u003e 31 inches (1), 40 inches (1), 30 inches (2), 36 inches (2), 43 inches (2)\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 2.13 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282194673\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eHow many cylinders does the Sierra 18-8842-1 wire set cover?\u003c\/strong\u003e The 18-8842-1 is an 8-cylinder set, supplying one coil wire and seven spark plug wires sized for a full 8-cylinder conventional distributor engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this set work with an electronic distributor?\u003c\/strong\u003e No. The 18-8842-1 is designed specifically for conventional (non-electronic) distributor ignition systems, not electronic distributor setups.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the individual wire lengths in the set?\u003c\/strong\u003e The set includes one 9 inch coil wire, one 31 inch spark plug wire, one 40 inch spark plug wire, two 30 inch spark plug wires, two 36 inch spark plug wires, and two 43 inch spark plug wires.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material are the wires made from?\u003c\/strong\u003e Sierra 18-8842-1 wires use a stainless steel wound conductor with a Kevlar core, wrapped in silicone jacketing with silicone boots at each end.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy use a stainless steel wound conductor instead of standard copper core wire?\u003c\/strong\u003e The stainless steel wound conductor in the 18-8842-1 is built to support maximum horsepower and engine performance while providing superior RFI suppression, protecting sensitive onboard electronics from ignition interference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is this spark plug wire set?\u003c\/strong\u003e The 18-8842-1 spark plug wire set is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the terminal material resist corrosion in a marine environment?\u003c\/strong\u003e Yes, the 18-8842-1 uses corrosion resistant stainless steel terminals at the spark plug and distributor connections for reliable conductivity in salt air and moisture.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-8842-1 wire set weigh?\u003c\/strong\u003e The Sierra 18-8842-1 weighs 2.13 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the silicone boots handle high underhood temperatures?\u003c\/strong\u003e Yes, the 18-8842-1 uses premium silicone jacketing and silicone boots rated for high temperature protection under the hood or engine cover.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat ignition symptoms would call for replacing this wire set?\u003c\/strong\u003e Cracked, brittle, or arcing plug wires that cause misfires, rough idle, or ignition-related RFI noise are the typical reasons to replace an 8-cylinder set like the 18-8842-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the coil wire included in the set or sold separately?\u003c\/strong\u003e The coil wire is included in the 18-8842-1 set as one of the seven total wires supplied.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988435841243,"sku":"SIE-18-8842-1","price":62.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-8842-1__95762.1739458958.500.750.jpg?v=1785188945","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-8842-1-spark-plug-wire-set-8-cylinder-omc-marine-engines-conventional-ignition","provider":"Good Vibes Marina","version":"1.0","type":"link"}