{"product_id":"sierra-18-2174-u-joint-cross-bearing-replaces-mercury-75832a2-mercruiser-sterndrive-universal-joint","title":"Sierra 18-2174 Heavy Duty U-Joint, Replaces Mercury Marine 75832A3, Fits Alpha One SN B418819 \u0026 Above, Alpha One SS, Bravo","description":"\u003cp\u003eThe Sierra 18-2174 is a heavy duty U-joint built as a direct replacement for the U-joint used on Mercruiser Alpha One drive units (S\/N B418819 and above), Alpha One SS, and Bravo drives. It is constructed from alloy steel to handle the torsional loads transmitted through the drive shaft between the engine and outdrive, and it includes both a straight grease fitting and a 90 degree grease fitting so it can be serviced in tight installation clearances where a straight fitting cannot be accessed.\u003c\/p\u003e\u003cp\u003eThis U-joint is designed as a like-for-like replacement for the original equipment part, matching the fit and function of the OEM component it replaces. It ships as a single U-joint unit finished in brown\/black alloy steel, ready to install in place of a worn or failing joint during routine outdrive maintenance or driveline repair.\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 18-2174\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e U-Joint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Brown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 3.5 x 3.5 x 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.21 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrease Fittings Included:\u003c\/strong\u003e Straight and 90 degree\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999311764\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAlpha I Units, S\/N B418819 and above\u003c\/li\u003e\n\u003cli\u003eAlpha I SS\u003c\/li\u003e\n\u003cli\u003eBravo\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e36312\u003c\/li\u003e\n\u003cli\u003e41431\u003c\/li\u003e\n\u003cli\u003e58749\u003c\/li\u003e\n\u003cli\u003e75832\u003c\/li\u003e\n\u003cli\u003e75832T\u003c\/li\u003e\n\u003cli\u003e75832A1\u003c\/li\u003e\n\u003cli\u003e75832A2\u003c\/li\u003e\n\u003cli\u003e75832A3\u003c\/li\u003e\n\u003cli\u003e758321\u003c\/li\u003e\n\u003cli\u003e75832T1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2174 U-joint fit?\u003c\/strong\u003e This U-joint fits Alpha I drive units with serial number B418819 and above, as well as Alpha I SS and Bravo drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2174 a direct replacement for the original Mercury Marine U-joint?\u003c\/strong\u003e Yes, the Sierra 18-2174 is built as a direct replacement for OEM U-joints including Mercury Marine part numbers 75832, 75832T, 75832A1, 75832A2, 75832A3, 758321, and 75832T1, along with 36312, 41431, and 58749.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-2174 cross-reference to?\u003c\/strong\u003e The 18-2174 replaces OEM numbers 36312, 41431, 58749, 75832, 75832T, 75832A1, 75832A2, 75832A3, 758321, and 75832T1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the U-joint weigh?\u003c\/strong\u003e The Sierra 18-2174 U-joint weighs 1.21 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-2174 U-joint made of?\u003c\/strong\u003e It is made of alloy steel, providing the strength needed to handle drive shaft torsional loads between the engine and outdrive.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2174 come with grease fittings?\u003c\/strong\u003e Yes, the 18-2174 U-joint includes both a straight grease fitting and a 90 degree grease fitting, allowing servicing in installations with limited clearance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-2174 U-joint?\u003c\/strong\u003e The U-joint measures 3.5 x 3.5 x 1.5 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this U-joint work on an older Alpha I unit below serial number B418819?\u003c\/strong\u003e The 18-2174 is specified to fit Alpha I units at serial number B418819 and above, along with Alpha I SS and Bravo; it is not specified for units below that serial number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-2174?\u003c\/strong\u003e Each order includes one Sierra 18-2174 heavy duty U-joint with both straight and 90 degree grease fittings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color\/finish is the 18-2174 U-joint?\u003c\/strong\u003e The 18-2174 U-joint has a brown alloy steel finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2174 fit Bravo drives?\u003c\/strong\u003e Yes, in addition to Alpha I (S\/N B418819 \u0026amp; above) and Alpha I SS, the Sierra 18-2174 also fits Bravo drives.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988105277659,"sku":"SIE-18-2174","price":54.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2174_lg__64656.1558121620.500.750.jpg?v=1785188089","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2174-u-joint-cross-bearing-replaces-mercury-75832a2-mercruiser-sterndrive-universal-joint","provider":"Good Vibes Marina","version":"1.0","type":"link"}