{"product_id":"sierra-18-99531-metric-spark-gap-adapter-for-johnson-evinrude-outboards-ignition-diagnostic-adapter","title":"Sierra Metric Adapter 18-99531 for Johnson Evinrude Outboard Ignition Systems","description":"\u003cp\u003eThe Sierra 18-99531 is a metric adapter built for Johnson and Evinrude outboard ignition systems. It provides a reliable connection point within the ignition circuit, letting technicians and boat owners mate metric-threaded ignition components to the outboard's wiring or hardware without improvising a fix. The adapter is constructed of aluminum and plastic, giving it a solid, corrosion-resistant body paired with an insulated plastic section where electrical isolation is needed.\u003c\/p\u003e\u003cp\u003eSold as a single adapter per package, the 18-99531 is a compact, lightweight component at just 0.1 pounds, making it easy to keep on hand as a spare for ignition service and repair work on Johnson and Evinrude outboards. Because it is purpose-built for these ignition systems, it drops into the ignition circuit in place of the original connector without modification.\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 18-99531\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Metric Adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum, Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 736983856173\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Johnson and Evinrude outboard ignition systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-99531 metric adapter used for?\u003c\/strong\u003e It is a metric adapter for Johnson and Evinrude outboard ignition systems, used to connect metric-threaded ignition components into the ignition circuit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-99531 made of?\u003c\/strong\u003e The adapter is made of aluminum and plastic, combining a durable metal body with an insulated plastic section.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-99531 weigh?\u003c\/strong\u003e The Sierra 18-99531 metric adapter weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-99531 fit both Johnson and Evinrude outboards?\u003c\/strong\u003e Yes, the Sierra 18-99531 is designed for use on Johnson and Evinrude outboard ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when you order the Sierra 18-99531?\u003c\/strong\u003e One Sierra 18-99531 metric adapter is included per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-99531 metric adapter?\u003c\/strong\u003e The UPC for the Sierra 18-99531 is 736983856173.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99531 an OEM part or a replacement adapter?\u003c\/strong\u003e The 18-99531 is a Sierra-branded adapter for Johnson and Evinrude ignition systems, sold under Sierra's own part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the Sierra 18-99531 be installed without modification?\u003c\/strong\u003e It is built to connect directly within the Johnson or Evinrude ignition circuit as a metric adapter, without requiring modification to install.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99531 a lightweight, compact part?\u003c\/strong\u003e At 0.1 pounds, the Sierra 18-99531 metric adapter is a compact, lightweight component that is easy to keep as a spare part.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988445671643,"sku":"SIE-18-99531","price":14.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-551-334M_lg__54606.1558111846.500.750.jpg?v=1785187994","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-99531-metric-spark-gap-adapter-for-johnson-evinrude-outboards-ignition-diagnostic-adapter","provider":"Good Vibes Marina","version":"1.0","type":"link"}