{"product_id":"arco-12v-starter-solenoid-mercury-mercruiser-isolated-base-57-sw054","title":"ARCO 12V Starter Solenoid for Mercury \u0026 MerCruiser – Isolated Base | SKU 57-SW054","description":"\u003ch2\u003eARCO 12V Starter Solenoid for Mercury \u0026amp; MerCruiser – Isolated Base\u003c\/h2\u003e\u003cp\u003eA direct-replacement 12-volt starter solenoid with an isolated base for Mercury outboard and MerCruiser stern-drive engines. The solenoid is the electrical switch that sends high-current power from the battery to the starter motor when you turn the key. When it fails, the engine won’t crank at all — or you’ll hear a single click with no starter engagement. This ARCO unit restores full starting function with a direct OEM-equivalent fit.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e12-volt, isolated base design\u003c\/li\u003e\n\u003cli\u003eDirect replacement for Mercury and MerCruiser starter solenoids\u003c\/li\u003e\n\u003cli\u003eOEM-equivalent fit — no wiring modifications required\u003c\/li\u003e\n\u003cli\u003eReplaces 5 Mercury OEM part numbers\u003c\/li\u003e\n\u003cli\u003eBuilt for reliable performance in marine electrical environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplaces Mercury part numbers: 89-850189, 89-850189T, 89-91975, 89-96054, 89-96054T\u003c\/li\u003e\n\u003cli\u003eMercury outboard engines using the above OEM references\u003c\/li\u003e\n\u003cli\u003eMerCruiser stern-drive engines using the above OEM references\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePairs Well With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/arco-12v-starter-solenoid-for-mercury-mercruiser-sw109\"\u003eARCO 12V Starter Solenoid for Mercury \u0026amp; MerCruiser (SW109)\u003c\/a\u003e – alternative solenoid for Mercury\/MerCruiser applications\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arco-starter-solenoid-mercruiser-cobra-volvo-penta-sw450\"\u003eARCO Starter Solenoid – MerCruiser, Cobra \u0026amp; Volvo Penta (SW450)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arco-heavy-duty-starter-solenoid-mercruiser-omc-volvo-penta-sw463\"\u003eARCO Heavy-Duty Starter Solenoid (SW463)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arco-outboard-starter-motor-mercury-force-90-120-hp-sport-jet-57-7325\"\u003eARCO Outboard Starter Motor – Mercury \/ Force 90–120 HP Sport Jet\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eBest suited for Mercury outboard and MerCruiser owners where the engine won’t crank — particularly when you hear a single click from the solenoid area but the starter motor doesn’t spin. This is the isolated base version, which is required on engines where the solenoid mounting surface is not grounded to the engine block. Confirm your Mercury part number against the five listed above before ordering — Mercury used several solenoid variants, and the SW109 and SW450 are separate units for different applications.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250829393956,"sku":"57-SW054","price":43.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/57-SW054.jpg?v=1786510786","url":"https:\/\/marisolmarine.com\/products\/arco-12v-starter-solenoid-mercury-mercruiser-isolated-base-57-sw054","provider":"Marisol Marine Company","version":"1.0","type":"link"}