{"product_id":"sierra-wiring-harness-johnson-evinrude-18-99620","title":"Sierra Wiring Harness Johnson\/Evinrude 583211 #18-99620","description":"\u003ch2\u003eSierra 18-99620 Wiring Harness\u003c\/h2\u003e\n\u003cp\u003eThe Sierra Wiring Harness (Part Number 18-99620) is an aftermarket replacement harness for Johnson and Evinrude outboards, specifically covering 1986 and 1987 models in the 35, 40, 48, and 50 HP range. It uses a round plug connector, which is the correct configuration for these model years. Getting the connector style right matters here since round and square plug harnesses are not interchangeable.\u003c\/p\u003e\n\u003cp\u003eThis harness crosses to CDI part number 413-3211 and Johnson\/Evinrude OEM part number 583211, so if you are working from a parts manual or a previous order, those numbers confirm you are looking at the right replacement. Sierra builds their marine electrical components to meet or exceed OEM specifications, making this a reliable option when the original harness has corroded, shorted, or simply given up after decades of saltwater exposure.\u003c\/p\u003e\n\u003cp\u003eWiring harness replacement on outboards of this era is a common repair. Corrosion works its way into connectors and insulation over time, causing intermittent electrical faults, ignition issues, and charging problems that can be frustrating to diagnose. A fresh harness eliminates a lot of variables at once.\u003c\/p\u003e\n\u003cp\u003eConfirm your engine's model year and horsepower rating against the 1986-1987, 35\/40\/48\/50 HP fitment range before ordering. The round plug configuration must match your existing setup.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eNormalized SKU:\u003c\/b\u003e 1899620\u003cbr\u003e\u003cb\u003eUPC Code:\u003c\/b\u003e 808282399627\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":54315473010993,"sku":"SIE-18-99620","price":249.41,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0015\/7184\/8291\/files\/sierra-wiring-harness-johnson-evinrude-583211-18-99620-808282399627-1240313464.jpg?v=1779654968","url":"https:\/\/www.firstchoicemarine.com\/products\/sierra-wiring-harness-johnson-evinrude-18-99620","provider":"First Choice Marine","version":"1.0","type":"link"}