{"product_id":"sierra-18-5907-heavy-duty-marine-starter-replaces-oem-42091-standard-rotation-gm-ford-engines-clockwise-top-mount-rear-entry-no-core","title":"Sierra 18-5907 Heavy-Duty Starter, 9 Tooth Clockwise, Replaces 50-72550A2 - GM \u0026 Ford Opposite Rotation Engines","description":"\u003cp\u003eThe Sierra 18-5907 is a heavy-duty, no-core replacement starter built for opposite rotation GM and Ford marine engines. It is a top mount, rear entry starter with clockwise rotation and a 9 tooth drive gear, and it will also replace bottom mount standard rotation starters. This starter is designed for Mercruiser built 4 cylinder engines including the 165, 170, 180, 190, 470, 485, and 488, as well as Ford 302 CID and 351 CID engines. Note that it will not replace non-starter mounted solenoids -- it is intended for applications where the solenoid is mounted directly on the starter itself. The 18-5907 meets SAEJ1171 standards and pairs with the Sierra 18-5837 solenoid when a replacement solenoid is needed. It ships with no core required, simplifying installation for boat owners and marine technicians replacing a worn or failed starter. As with other Sierra electrical components, this starter is built to meet or exceed the performance of the original equipment part it replaces, making it a straightforward drop-in solution for the listed engine applications.\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 18-5907\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Starter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuty Rating:\u003c\/strong\u003e Heavy-Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCore Required:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e Clockwise\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTooth Count:\u003c\/strong\u003e 9 tooth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Top mount, rear entry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso Fits:\u003c\/strong\u003e Bottom mount standard rotation applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e Will not replace non-starter mounted solenoids\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase Type:\u003c\/strong\u003e Cranking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e SAEJ1171\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Solenoid:\u003c\/strong\u003e 18-5837\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 23.3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5 x 8 x 13 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999875921\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOpposite rotation GM \u0026amp; Ford engines (top mount, rear entry)\u003c\/li\u003e\n\u003cli\u003eFord 302 CID and 351 CID engines\u003c\/li\u003e\n\u003cli\u003eMercruiser built 4 cylinder engines: 165, 170, 180, 190, 470, 485, 488\u003c\/li\u003e\n\u003cli\u003eAlso replaces bottom mount, standard rotation starter applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e50-72550A2\u003c\/li\u003e\n\u003cli\u003e50-79604A3\u003c\/li\u003e\n\u003cli\u003e50-97499A2\u003c\/li\u003e\n\u003cli\u003e50-97499R4\u003c\/li\u003e\n\u003cli\u003e50-72550R2\u003c\/li\u003e\n\u003cli\u003e50-97499R3\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5907 starter fit?\u003c\/strong\u003e The 18-5907 fits opposite rotation GM \u0026amp; Ford engines, including Ford 302 CID and 351 CID engines, and Mercruiser built 4 cylinder engines: 165, 170, 180, 190, 470, 485, and 488.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5907 a top mount or bottom mount starter?\u003c\/strong\u003e It is a top mount, rear entry starter, and it will also replace bottom mount standard rotation starter applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich direction does the 18-5907 starter rotate?\u003c\/strong\u003e Clockwise rotation, designed for opposite rotation GM and Ford engines with a 9 tooth drive gear.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-5907 require a core exchange?\u003c\/strong\u003e No, the 18-5907 is sold with no core required.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-5907 replace?\u003c\/strong\u003e The 18-5907 replaces 50-72550A2, 50-79604A3, 50-97499A2, 50-97499R4, 50-72550R2, and 50-97499R3.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5907 work with any solenoid?\u003c\/strong\u003e It will not replace non-starter mounted solenoids; the matching replacement solenoid is the Sierra 18-5837.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5907 starter weigh?\u003c\/strong\u003e This starter weighs 23.3 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5907 starter?\u003c\/strong\u003e The 18-5907 measures 5 x 8 x 13 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat voltage is the 18-5907 starter rated for?\u003c\/strong\u003e 12 Volts, with a cranking phase type.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5907 meet any industry standards?\u003c\/strong\u003e Yes, the 18-5907 meets the SAEJ1171 standard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-5907 be used on Ford-powered I\/O boats?\u003c\/strong\u003e Yes, it fits 302 CID and 351 CID Ford engines in opposite rotation applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5907 a heavy-duty starter?\u003c\/strong\u003e Yes, the 18-5907 is a heavy-duty rated starter designed for marine I\/O and Mercruiser electrical systems.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988344385755,"sku":"SIE-18-5907","price":299.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5907__60177.1753371331.500.750.jpg?v=1785189125","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-5907-heavy-duty-marine-starter-replaces-oem-42091-standard-rotation-gm-ford-engines-clockwise-top-mount-rear-entry-no-core","provider":"Good Vibes Marina","version":"1.0","type":"link"}