{"product_id":"sierra-18-8813-1-magforce-marine-spark-plug-wire-set-replaces-volvo-penta-875571-4-cylinder-stern-drive-ignition-7mm","title":"Sierra 18-8813-1 Spark Plug Wire Set, Replaces Volvo Penta 875571, for AQ120B\/AQ125\/AQ131\/AQ140\/AQ145\/AQ151 4-Cylinder Engines","description":"\u003cp\u003eThe Sierra 18-8813-1 is a MagForce premium marine spark plug wire set built for 4-cylinder Volvo Penta stern drive engines. Each wire uses a Kevlar core paired with a durable stainless steel wound conductor, giving the set the strength to handle continuous marine vibration and heat cycling while supporting reliable spark delivery for maximum horsepower and engine performance. The wires are covered in premium silicone jacketing with silicone boots, providing high temperature protection at the spark plug and distributor connections where heat exposure is greatest. Superior RFI suppression is built into the construction, reducing ignition-generated interference so that sensitive onboard electronics and marine electronics are not disrupted during operation.\u003c\/p\u003e\u003cp\u003eCorrosion resistant stainless steel is used at both the spark plug and distributor terminals, maintaining strong electrical conductivity even in a saltwater and high-humidity marine environment. The set is sized with a 7 millimeter wire diameter and is designed for conventional ignition systems on 4-cylinder engines. The 18-8813-1 is a direct fit for a range of Volvo Penta AQ-series stern drive engines, replacing the original Volvo Penta ignition wiring while adding upgraded materials over typical wear-prone factory wiring. It ships as a complete one-set unit ready to install on a compatible 4-cylinder Volvo Penta engine.\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 18-8813-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Spark Plug Wire Set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cylinders:\u003c\/strong\u003e 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Conventional\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Diameter:\u003c\/strong\u003e 7 millimeters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCore Material:\u003c\/strong\u003e Kevlar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor:\u003c\/strong\u003e Stainless steel wound conductor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJacket and Boot Material:\u003c\/strong\u003e Silicone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Material:\u003c\/strong\u003e Corrosion resistant stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Spark plug terminals and ignition system connector\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 0.93 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282194413\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVolvo Penta AQ120B, 4-cylinder, 1977 to 1980\u003c\/li\u003e\n\u003cli\u003eVolvo Penta AQ125A\/B, 4-cylinder, 1981 to 1985\u003c\/li\u003e\n\u003cli\u003eVolvo Penta AQ131A\/B\/C\/D, 4-cylinder, 1985 to 1989\u003c\/li\u003e\n\u003cli\u003eVolvo Penta AQ140A, 4-cylinder, 1975 to 1979\u003c\/li\u003e\n\u003cli\u003eVolvo Penta AQ145A\/B, 4-cylinder, 1979 to 1985\u003c\/li\u003e\n\u003cli\u003eVolvo Penta AQ151A\/B\/C, 4-cylinder, 1985 to 1989\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVolvo Penta 875571\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 875571-2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat Volvo Penta engines does the Sierra 18-8813-1 spark plug wire set fit?\u003c\/strong\u003e The 18-8813-1 fits Volvo Penta AQ120B (1977 to 1980), AQ125A\/B (1981 to 1985), AQ131A\/B\/C\/D (1985 to 1989), AQ140A (1975 to 1979), AQ145A\/B (1979 to 1985), and AQ151A\/B\/C (1985 to 1989), all 4-cylinder engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this wire set replace Volvo Penta 875571?\u003c\/strong\u003e Yes, the Sierra 18-8813-1 replaces Volvo Penta 875571, as well as OEM number 875571-2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the wire diameter on this set?\u003c\/strong\u003e 7 millimeters, matched to the conventional ignition systems used on the compatible 4-cylinder Volvo Penta engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat materials is the 18-8813-1 wire set made from?\u003c\/strong\u003e It combines a Kevlar core with a stainless steel wound conductor, covered by premium silicone jacketing and silicone boots.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does it use stainless steel terminals?\u003c\/strong\u003e Corrosion resistant stainless steel spark plug and distributor terminals keep the 18-8813-1 conductive in a marine environment where standard terminals would corrode.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the wire set reduce electronic interference?\u003c\/strong\u003e Yes, the 18-8813-1 includes RFI suppression to protect sensitive onboard electronics from ignition interference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many cylinders is this wire set designed for?\u003c\/strong\u003e This is a 4-cylinder wire set, matching the AQ120B, AQ125, AQ131, AQ140, AQ145, and AQ151 Volvo Penta engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat ignition type is the 18-8813-1 compatible with?\u003c\/strong\u003e Conventional ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-8813-1 weigh?\u003c\/strong\u003e 0.93 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-8813-1 a genuine Volvo Penta part or aftermarket?\u003c\/strong\u003e It is a Sierra-branded MagForce wire set engineered as a replacement for Volvo Penta 875571 and 875571-2, not an original Volvo Penta part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the wire set components?\u003c\/strong\u003e Each component of the 18-8813-1 measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when ordering the 18-8813-1?\u003c\/strong\u003e One complete spark plug wire set for a 4-cylinder Volvo Penta engine.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988434792667,"sku":"SIE-18-8813-1","price":185.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-8813-1_lg__34006.1558133111.500.750.jpg?v=1785188199","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-8813-1-magforce-marine-spark-plug-wire-set-replaces-volvo-penta-875571-4-cylinder-stern-drive-ignition-7mm","provider":"Good Vibes Marina","version":"1.0","type":"link"}