{"product_id":"marine-starter-solenoid-for-mercury-mercruiser-replaces-65057a1-65057t1-sierra-18-5802","title":"Sierra 18-5802 Marine Solenoid, White, Replaces Mercury Marine 65057A1, 65057T1, 65057, 54981","description":"\u003cp\u003eThe Sierra 18-5802 is a marine solenoid built to meet or exceed original equipment quality for boats and marine engines that use this component. Finished in white, it is supplied as a single unit ready for installation as a direct replacement for the Mercury Marine solenoids it is designed to replace. Solenoids like this one act as the electrical switch that allows a low-current signal, such as a key-start circuit, to engage a much higher-current circuit, a role that is essential to reliable engine starting and electrical system operation on the water. Because marine electrical components are exposed to vibration, moisture, and temperature swings, using a solenoid manufactured to original equipment quality standards helps ensure consistent, dependable performance. The Sierra 18-5802 is cataloged under Mercruiser solenoids and is cross-referenced to Mercury Marine part numbers 65057A1, 65057T1, 65057, and 54981, making it straightforward to identify as the correct replacement when an original part number is known. It ships as a single, complete solenoid with no additional components required beyond the part itself. Buyers should confirm their original part number against the replacement list below before ordering to ensure proper fit.\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 18-5802\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Solenoid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Solenoids\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.71 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 8 x 6 x 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999237286\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e65057A1\u003c\/li\u003e\n\u003cli\u003e65057T1\u003c\/li\u003e\n\u003cli\u003e65057\u003c\/li\u003e\n\u003cli\u003e54981\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5802 solenoid replace?\u003c\/strong\u003e The Sierra 18-5802 is a direct cross-reference for Mercury Marine solenoid part numbers 65057A1, 65057T1, 65057, and 54981.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-5802 solenoid?\u003c\/strong\u003e It is finished in white, matching the original equipment appearance for the Mercury Marine solenoids it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5802 weigh?\u003c\/strong\u003e The Sierra 18-5802 solenoid weighs 0.71 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-5802 solenoid?\u003c\/strong\u003e Listed dimensions for the Sierra 18-5802 solenoid are 8 x 6 x 4 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5802 an OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-5802 is a Sierra-manufactured replacement solenoid engineered to meet or exceed original equipment quality, not a genuine Mercury Marine part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many solenoids come in the package?\u003c\/strong\u003e The Sierra 18-5802 ships as a single solenoid, one unit per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of equipment is the 18-5802 solenoid used with?\u003c\/strong\u003e Sierra catalogs the 18-5802 under Mercruiser solenoids.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if the 18-5802 is the correct replacement for my old solenoid?\u003c\/strong\u003e Check the part number on your existing solenoid against the Sierra 18-5802 cross-reference list: 65057A1, 65057T1, 65057, and 54981. A match on any of these confirms fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-5802 include a warranty?\u003c\/strong\u003e Yes, the Sierra 18-5802 solenoid is covered by a limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5802 the same as a starter solenoid?\u003c\/strong\u003e The Sierra 18-5802 is cataloged and sold specifically as a solenoid; buyers needing a dedicated starter solenoid for a different application should confirm the correct part number against their original equipment before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988322758875,"sku":"SIE-18-5802","price":34.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5802_lg__17215.1558129837.500.750.jpg?v=1785188859","url":"https:\/\/www.goodvibesmarina.com\/products\/marine-starter-solenoid-for-mercury-mercruiser-replaces-65057a1-65057t1-sierra-18-5802","provider":"Good Vibes Marina","version":"1.0","type":"link"}