{"product_id":"sierra-18-1705-hinge-pin-with-grease-port-for-mercruiser-alpha-alpha-gen-ii-gimbal-housing-replaces-77123-s-n-0m815638-lower","title":"Sierra Hinge Pin 18-1705 - Replaces 77123, 77123A1, 65547 - Gimbal Housing for Alpha Gen II and Bravo","description":"\u003cp\u003eThe Sierra Hinge Pin 18-1705 is a replacement hinge pin for the gimbal housing on Alpha Gen II and Bravo sterndrives. It is built from metal for durability in the marine environment and is designed to meet or exceed the performance of the original equipment part it replaces. This hinge pin secures the gimbal housing to the transom assembly, and correct fitment matters for proper steering and trim function, so installers should confirm the serial number range and drive model before ordering.\u003c\/p\u003e\u003cp\u003eThis part is designed to fit Alpha Gen II units with serial number 0M85639 and up, as well as all Bravo models equipped with a trim sender. Sierra manufactures this hinge pin as a direct cross-reference replacement for the OEM numbers 77123, 77123A1, and 65547, making it a straightforward swap when the original hinge pin is worn, corroded, or damaged. As with other Sierra replacement parts, it is engineered to hold up under the demands of high-horsepower engines and the harsh marine operating environment.\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 18-1705\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Hinge Pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Gimbal Housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.13 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282186609\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAlpha Gen II, S\/N 0M85639 \u0026amp; UP\u003c\/li\u003e\n\u003cli\u003eBravo, All Models with trim sender\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e77123\u003c\/li\u003e\n\u003cli\u003e77123A1\u003c\/li\u003e\n\u003cli\u003e65547\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-1705 hinge pin used for?\u003c\/strong\u003e It is a hinge pin for the gimbal housing on Alpha Gen II and Bravo sterndrives, securing the gimbal housing so the drive can steer and trim correctly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill hinge pin 18-1705 fit an Alpha Gen II drive?\u003c\/strong\u003e Yes, but only on Alpha Gen II units with serial number 0M85639 and up; earlier serial numbers are not covered by this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-1705 fit Bravo drives?\u003c\/strong\u003e It fits all Bravo models equipped with a trim sender.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the Sierra 18-1705 hinge pin replace?\u003c\/strong\u003e It cross-references to OEM numbers 77123, 77123A1, and 65547.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-1705 hinge pin genuine OEM or aftermarket?\u003c\/strong\u003e The 18-1705 is a Sierra aftermarket replacement part engineered to meet or exceed the performance of the original 77123\/77123A1\/65547 hinge pin it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-1705 hinge pin made from?\u003c\/strong\u003e This hinge pin is made from metal for durability in marine use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-1705 hinge pin weigh?\u003c\/strong\u003e It weighs 0.13 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many hinge pins come in one package?\u003c\/strong\u003e The Sierra 18-1705 is sold as a single hinge pin.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-1705 hinge pin?\u003c\/strong\u003e The UPC for this hinge pin is 808282186609.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-1705 hinge pin be used on gimbal bearing applications?\u003c\/strong\u003e No, the 18-1705 is specifically a gimbal housing hinge pin, not a gimbal bearing; confirm your drive's serial number and model against the Alpha Gen II and Bravo fitment before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088926427,"sku":"SIE-18-1705","price":23.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1705_lg__03496.1729094776.500.750.jpg?v=1785188526","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-1705-hinge-pin-with-grease-port-for-mercruiser-alpha-alpha-gen-ii-gimbal-housing-replaces-77123-s-n-0m815638-lower","provider":"Good Vibes Marina","version":"1.0","type":"link"}