{"product_id":"sierra-18-28084-spark-plug-wire-set-for-mercury-outboards-replaces-mpn-118-28084-upc-808282341435","title":"Sierra 18-28084 Plug Wire Set for Mercury Outboard Engines, 1 Pack","description":"\u003cp\u003eThe Sierra 18-28084 Plug Wire Set is a replacement ignition wire set built for Mercury outboard engines. Ignition plug wires carry high-voltage spark from the coil to each spark plug, and worn, cracked, or corroded wires are a common cause of hard starting, misfires, and rough idle on outboard motors. This set is sold as a single 1-pack unit with a plug-in connector type for straightforward installation without special tools or splicing.\u003c\/p\u003e\u003cp\u003eSierra manufactures ignition and electrical components specifically for the marine industry, engineered to hold up to the vibration, heat, and moisture exposure that outboard engines see on the water. Replacing a full plug wire set rather than individual wires helps ensure consistent resistance and spark delivery across all cylinders, which supports smoother running and more reliable starts.\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 18-28084\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Spark Plug Wires\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Plug Wire Set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Plug in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 2.81 inches L x 10.44 inches W x 7.13 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.49 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282341435\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits Mercury outboard engines using the 18-28084 ignition wire set.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-28084 plug wire set fit?\u003c\/strong\u003e The Sierra 18-28084 is a plug wire set designed for Mercury outboard engines, sold as a complete 1-pack ignition wire set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many plug wires are included in the 18-28084 set?\u003c\/strong\u003e This set is packaged as a single 1-pack unit, sold as one complete ignition plug wire set rather than individual wires.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat connector type does this plug wire set use?\u003c\/strong\u003e The 18-28084 uses a plug-in connector type, allowing it to connect directly without additional splicing hardware.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-28084 plug wire set weigh?\u003c\/strong\u003e The Sierra 18-28084 plug wire set weighs 0.49 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-28084 plug wire set?\u003c\/strong\u003e It ships in packaging measuring 2.81 inches long, 10.44 inches wide, and 7.13 inches high.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-28084 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-28084 is Sierra's own manufacturer part number for this ignition plug wire set, not a generic aftermarket substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace ignition plug wires on an outboard engine?\u003c\/strong\u003e Worn or corroded ignition plug wires can cause misfires, hard starting, and rough idle, and replacing the full set with the Sierra 18-28084 helps restore consistent spark delivery to each cylinder.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-28084 manufactured?\u003c\/strong\u003e The Sierra 18-28084 plug wire set is manufactured in China.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-28084 come with installation instructions?\u003c\/strong\u003e The listing for the Sierra 18-28084 does not specify included installation instructions; it is packaged as the plug wire set itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-28084 plug wire set?\u003c\/strong\u003e The UPC for the Sierra 18-28084 plug wire set is 808282341435.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988114321627,"sku":"SIE-18-28084","price":42.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-28084__69929.1722374391.500.750.jpg?v=1785189177","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-28084-spark-plug-wire-set-for-mercury-outboards-replaces-mpn-118-28084-upc-808282341435","provider":"Good Vibes Marina","version":"1.0","type":"link"}