{"product_id":"sierra-18-5228-1-magforce-9-marine-spark-plug-wire-lead-replaces-mercury-84-813715a1-fits-mercury-outboard-ignition","title":"Sierra 18-5228-1 MagForce 9 Inch 8mm Spark Plug Wire, Replaces Mercury 84-813715A1","description":"\u003cp\u003eThe Sierra 18-5228-1 is a 9 inch, 8mm MagForce ignition wire built for Mercury and Mariner outboard ignition systems. It is designed as an electronics friendly replacement lead, meaning it shields onboard electronic engine controls and other electronic devices from RFI and EMI interference while still delivering the full voltage the ignition system needs to fire the plug reliably. The exact fit design matches the original wire's dimensions and connector style, so it installs the same way the factory lead did without any modification or splicing.\u003c\/p\u003e\u003cp\u003eEach end terminates in a boot-style connector for a secure, weather-resistant seal at the spark plug and coil or distributor connection. This wire directly replaces Mercury part number 84-813715A1, making it a straightforward drop-in swap when an original equipment lead has cracked, arced, or lost continuity. Sierra builds each wire to meet or exceed the specifications of the original equipment part it replaces, so performance and durability match what the engine shipped with.\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 18-5228-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Wiring Plug Set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Length:\u003c\/strong\u003e 9 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Gauge:\u003c\/strong\u003e 8mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Boot Style\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Nylon\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 0.08 pounds\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\u003eReplaces (OEM):\u003c\/strong\u003e 84-813715A1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOutboard - Mercury\/Mariner ignition system\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e84-813715A1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5228-1 spark plug wire fit?\u003c\/strong\u003e The Sierra 18-5228-1 is built for the Mercury\/Mariner outboard ignition system, matching the fit of the original equipment wire it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-5228-1 replace?\u003c\/strong\u003e It directly replaces Mercury part number 84-813715A1, so it can be ordered as a drop-in substitute for that original equipment wire.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow long is this spark plug wire?\u003c\/strong\u003e The Sierra 18-5228-1 measures 9 inches in length with an 8mm wire gauge.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the wire gauge of the 18-5228-1?\u003c\/strong\u003e It is an 8mm spark plug wire, sized to match the original 9 inch Mercury\/Mariner lead it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat connector style does the 18-5228-1 use?\u003c\/strong\u003e This wire terminates in a boot-style connector at the spark plug end for a secure, weather-resistant fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-5228-1 made from?\u003c\/strong\u003e The connector housing on the Sierra 18-5228-1 is nylon, chosen for heat resistance and a snug seal over the plug.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5228-1 weigh?\u003c\/strong\u003e The Sierra 18-5228-1 spark plug wire weighs 0.08 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5228-1 safe for electronic engine controls?\u003c\/strong\u003e Yes, Sierra's MagForce construction on the 18-5228-1 is designed to be electronics friendly, protecting electronic engine controls and other onboard electronics from RFI and EMI interference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5228-1 an OEM part or aftermarket?\u003c\/strong\u003e The 18-5228-1 is a Sierra aftermarket replacement wire engineered to meet or exceed the quality of the original Mercury 84-813715A1 equipment it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many of these wires do I need for my engine?\u003c\/strong\u003e The 18-5228-1 is sold as a single 9 inch, 8mm wire; the number required depends on how many spark plugs your Mercury\/Mariner outboard has.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5228-1 install without modification?\u003c\/strong\u003e Yes, it uses an exact fit design matching the original Mercury\/Mariner wire, so it installs the same way as the factory 84-813715A1 lead without cutting or splicing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-5228-1?\u003c\/strong\u003e Each order includes one Sierra 18-5228-1 plug wire with its boot-style connector attached, ready to install in place of the original Mercury 84-813715A1 lead.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988202172635,"sku":"SIE-18-5228-1","price":20.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5228-1__70825.1722512069.500.750.jpg?v=1785188705","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-5228-1-magforce-9-marine-spark-plug-wire-lead-replaces-mercury-84-813715a1-fits-mercury-outboard-ignition","provider":"Good Vibes Marina","version":"1.0","type":"link"}