{"product_id":"sierra-18-2138-pivot-pin-bearing-replaces-omc-911787-fits-omc-cobra-sterndrive-2-per-drive","title":"Sierra International 18-2138 Pivot Pin Bearing, Replaces OMC\/Volvo Penta 911787","description":"\u003cp\u003eThe Sierra International 18-2138 is a machined pivot pin bearing used in gimbal housing and U-joint assemblies. It is a direct replacement for the OEM bearing found in these assemblies and is built to the same fit and function as the original part it replaces. The bearing has a compact, precise profile designed to seat correctly in the pivot pin bore, allowing smooth articulation of the gimbal ring or U-joint during steering and trim movement.\u003c\/p\u003e\u003cp\u003eThis bearing is finished in white and features a machined construction for consistent, repeatable fit. It is a small, lightweight component at just 0.02 pounds, and the original equipment application calls for three of these bearings per gimbal housing, so most rebuilds require replacing the full set rather than a single unit. The 18-2138 is commonly stocked alongside related gimbal-bearing service parts such as oil seals and foam seals used in the same housing.\u003c\/p\u003e\u003cp\u003eBecause gimbal and U-joint bearings see constant flexing and exposure to grease, water intrusion, and load from steering and shifting, worn or pitted bearings are a common source of play, vibration, or steering stiffness in stern drive units. Replacing the 18-2138 as part of a gimbal bearing service restores proper pivot action and helps prevent premature wear on the pivot pin itself.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra International\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2138\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Pivot Pin Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\/Finish:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Used Per Application:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999311528\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e911787\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2138 pivot pin bearing replace?\u003c\/strong\u003e The 18-2138 replaces OEM number 911787, the bearing used in the gimbal housing and U-joint pivot pin assembly it is designed for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many of these bearings does one gimbal housing use?\u003c\/strong\u003e Three 18-2138 bearings are used per gimbal housing in the original application, so a full bearing service typically requires replacing all three rather than a single unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2138 a genuine Sierra part or aftermarket?\u003c\/strong\u003e It is a Sierra International part, sold under Sierra's own part number 18-2138 as a direct-fit replacement bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the 18-2138 bearing?\u003c\/strong\u003e The bearing measures 0.39 x 0.39 x 0.39 inches, a compact size intended to seat directly in the pivot pin bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2138 pivot pin bearing weigh?\u003c\/strong\u003e It weighs 0.02 pounds, reflecting its small, compact bearing design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-2138 bearing made of or finished with?\u003c\/strong\u003e The 18-2138 has a machined construction with a white finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat other parts are typically replaced along with the 18-2138 bearing?\u003c\/strong\u003e Gimbal housing rebuilds that use the 18-2138 pivot pin bearing often also involve replacing related oil seals and foam seals in the same housing, since all of these wear from the same water and grease exposure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would a pivot pin bearing need to be replaced?\u003c\/strong\u003e Worn or pitted pivot pin bearings, such as the 18-2138, are a common cause of play, vibration, or stiffness in gimbal and U-joint steering movement, so replacing them restores proper articulation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2138 come as a single bearing or a set?\u003c\/strong\u003e The 18-2138 is supplied as an individual bearing; since the application uses three per housing, buyers needing a full rebuild should order the quantity needed for their assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the OEM number 911787 the only cross-reference for this bearing?\u003c\/strong\u003e 911787 is the confirmed OEM cross-reference number for the Sierra 18-2138 pivot pin bearing.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988092268763,"sku":"SIE-18-2138","price":15.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2138_lg__00111.1558122293.500.750.jpg?v=1785188138","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2138-pivot-pin-bearing-replaces-omc-911787-fits-omc-cobra-sterndrive-2-per-drive","provider":"Good Vibes Marina","version":"1.0","type":"link"}