{"product_id":"sierra-18-8839-1-magforce-marine-spark-plug-wire-set-for-90-and-115-hp-outboard-engines-4-cylinder-ignition-wire-kit","title":"Sierra 18-8839-1 Spark Plug Wire Set for 90 and 115 HP Outboard Engines","description":"\u003cp\u003eThe Sierra 18-8839-1 is a spark plug wire set engineered for 90 hp and 115 hp outboard engines, supplying the two 14 inch wires and two 16 inch wires needed for a complete tune-up on these motors. Each wire uses a stainless steel wound conductor paired with a mag\/wire wound core, a design intended to deliver maximum voltage to the spark plug while suppressing radio frequency interference (RFI) and electromagnetic interference (EMI) that can disrupt sensitive onboard electronics. The wires are jacketed in silicone for high temperature protection at the cylinder head, and the distributor insulators are moisture-proof and molded to keep water out of the ignition circuit in a marine environment. A high-quality conductive center carrier reinforcement is built into each wire to maintain conductor integrity over time, and the terminals at the spark plug and distributor ends are corrosion-resistant stainless steel for consistent conductivity. The set is finished in white and is sold as a complete kit of four wires sized specifically for the 90 hp and 115 hp outboard applications. This wire set replaces a worn or cracked factory ignition wire set that can cause misfires, hard starting, or reduced power, restoring reliable spark delivery across all four (or six) cylinders as applicable to the outboard's ignition system.\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 18-8839-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Outboard Spark Plug Wire Set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 90 and 115 HP Outboard Engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Configuration:\u003c\/strong\u003e Two 14 inch wires and two 16 inch wires\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Material:\u003c\/strong\u003e Silicone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor Material:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCore Type:\u003c\/strong\u003e Mag\/Wire wound core\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 10.25 x 7.25 x 2.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.7 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282194642\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e90 HP Outboard Engines\u003c\/li\u003e\n\u003cli\u003e115 HP Outboard Engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-8839-1 wire set fit?\u003c\/strong\u003e The Sierra 18-8839-1 is built specifically for 90 hp and 115 hp outboard engines and is not intended as a universal fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many wires come in this set and what lengths are they?\u003c\/strong\u003e The set includes four wires total: two 14 inch wires and two 16 inch wires, sized to reach the correct cylinders on 90 hp and 115 hp outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the wire conductor made of?\u003c\/strong\u003e Each wire in the 18-8839-1 set uses a stainless steel wound conductor combined with a mag\/wire wound core for strong voltage delivery.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill these wires cause radio or electronic interference?\u003c\/strong\u003e No. The mag\/wire wound core construction in the 18-8839-1 set is designed to suppress radio frequency interference (RFI) and electromagnetic interference (EMI).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this wire set moisture resistant for marine use?\u003c\/strong\u003e Yes, the 18-8839-1 set has moisture-proof, molded distributor insulators designed to keep water out of the ignition circuit in a marine environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is used for the outer jacket of the wires?\u003c\/strong\u003e The wires are jacketed in silicone, which provides high temperature protection at the spark plug and cylinder head.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-8839-1 spark plug wire set weigh?\u003c\/strong\u003e This spark plug wire set weighs 0.7 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the wires in this set?\u003c\/strong\u003e The Sierra 18-8839-1 wires are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre the terminals on this wire set corrosion resistant?\u003c\/strong\u003e Yes, the spark plug and distributor terminals on the 18-8839-1 set are corrosion-resistant stainless steel for consistent conductivity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this wire set fit 150 or 175 hp outboards?\u003c\/strong\u003e No, the 18-8839-1 is sized for 90 hp and 115 hp outboards; 150 hp and 175 hp outboards use a different wire set with longer wires.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-8839-1 wire set?\u003c\/strong\u003e The UPC for this spark plug wire set is 808282194642.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate I need to replace my outboard's spark plug wires?\u003c\/strong\u003e Misfires, hard starting, or a noticeable loss of power on a 90 hp or 115 hp outboard can indicate cracked or degraded ignition wires, which the 18-8839-1 set is designed to replace.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988435349723,"sku":"SIE-18-8839-1","price":46.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-8839-1__84314.1739458950.500.750.jpg?v=1785188398","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-8839-1-magforce-marine-spark-plug-wire-set-for-90-and-115-hp-outboard-engines-4-cylinder-ignition-wire-kit","provider":"Good Vibes Marina","version":"1.0","type":"link"}