{"product_id":"sierra-18-2765-u-joint-bellows-for-omc-cobra-sx-dp-s-cone-clutch-drives-1986-1993-replaces-omc-3854127","title":"Sierra 18-2765 U-Joint Bellows for Volvo Penta DP-S, SX Stern Drives, Replaces 3854127","description":"\u003cp\u003eThe Sierra 18-2765 U-Joint Bellows is a direct-fit replacement bellows designed for Volvo Penta DP-S and SX stern drives. It seals the universal joint area of the drive, keeping water out of the u-joint and gimbal housing while allowing the drive's flexing movement needed for steering and trim. Over time the original rubber bellows on a stern drive hardens, cracks, or splits from age and exposure to water and fuel residue, which lets water intrude into the u-joint housing and leads to corrosion and premature bearing failure. Replacing a failed bellows with the 18-2765 restores the watertight seal and helps protect the u-joint and gimbal bearing from water damage.\u003c\/p\u003e\u003cp\u003eThis bellows is also used as the replacement Bellows component within Sierra's u-joint\/gimbal bearing service kit, alongside a Gimbal Bearing (Sierra 18-2100, O.E. 3853807) and a second Bellows (Sierra 18-1074), for a complete u-joint area reseal. The 18-2765 corresponds to O.E. Part number 3854127.\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 18-2765\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e U-Joint Bellows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Drive Models:\u003c\/strong\u003e DP-S, SX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.83 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999313058\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVolvo Penta DP-S stern drive\u003c\/li\u003e\n\u003cli\u003eVolvo Penta SX stern drive\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e3854127\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2765 U-Joint Bellows fit?\u003c\/strong\u003e The 18-2765 is designed for Volvo Penta DP-S and SX stern drives, sealing the u-joint area of those drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-2765 replace?\u003c\/strong\u003e It replaces OEM part number 3854127 on applicable Volvo Penta DP-S and SX stern drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2765 U-Joint Bellows weigh?\u003c\/strong\u003e The Sierra 18-2765 U-Joint Bellows weighs 0.83 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many bellows come in one package?\u003c\/strong\u003e One Sierra 18-2765 U-Joint Bellows is included per unit, with a unit count of 1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does a u-joint bellows need to be replaced?\u003c\/strong\u003e A bellows like the 18-2765 seals the u-joint housing against water intrusion; once the original bellows cracks or hardens with age, water can reach the u-joint and gimbal bearing and cause corrosion, so replacement with 18-2765 restores the seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2765 bellows part of a larger service kit?\u003c\/strong\u003e Yes, the 18-2765 Bellows is used as a component within a u-joint and gimbal bearing service kit that also includes a Sierra 18-2100 Gimbal Bearing (O.E. 3853807) and a Sierra 18-1074 Bellows.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2765?\u003c\/strong\u003e The UPC for the Sierra 18-2765 U-Joint Bellows is 030999313058.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2765 fit both DP-S and SX drives the same way?\u003c\/strong\u003e Yes, the same Sierra 18-2765 Bellows fits both the Volvo Penta DP-S and SX stern drive models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2765 an OEM or aftermarket part?\u003c\/strong\u003e The Sierra 18-2765 is an aftermarket bellows manufactured to replace OEM part number 3854127 on Volvo Penta DP-S and SX drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I replace just the bellows without replacing the gimbal bearing?\u003c\/strong\u003e Yes, the 18-2765 is sold as an individual Bellows and can be installed on its own, though it is also compatible for use alongside the 18-2100 Gimbal Bearing when servicing the full u-joint area.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988112191707,"sku":"SIE-18-2765","price":43.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2765_lg__63699.1558125190.500.750.jpg?v=1785188131","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2765-u-joint-bellows-for-omc-cobra-sx-dp-s-cone-clutch-drives-1986-1993-replaces-omc-3854127","provider":"Good Vibes Marina","version":"1.0","type":"link"}