{"product_id":"sierra-18-7168-9-marine-washer-for-volvo-penta-sterndrive-replaces-oem-12-19183-pack-of-5","title":"Sierra 18-7168-9 Gimbal Housing O-Ring, MerCruiser Bravo I\/II Stern Drives, Pack of 5","description":"\u003cp\u003eThe Sierra 18-7168-9 is a rubber O-ring sized for the gimbal housing of MerCruiser Bravo I\/II stern drives, sold as a pack of 5. Two of these O-rings are used per gimbal housing on Bravo (I\/II) units with beginning serial number B664190 and up, so this pack provides enough O-rings to reseal one housing with spares left over, or to keep on hand for a shop servicing multiple drives. The O-ring is molded in black rubber for resistance to marine gear lube, water intrusion, and the heat and vibration found at the drive-to-transom connection.\u003c\/p\u003e\u003cp\u003eReplacing the gimbal housing O-ring is a standard step whenever the housing is opened for service, such as during a bellows replacement, U-joint service, or gimbal bearing job, since the original seal can take a compression set or lose elasticity once removed. Using a properly sized, application-specific O-ring rather than a generic hardware-store substitute helps maintain the seal against water and lubricant leakage at this critical connection point.\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 18-7168-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Gimbal Housing O-Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 5 O-rings per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 3.7 inches L x 3.6 inches W x 0.2 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Used Per Gimbal Housing:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282165468\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMerCruiser Bravo (I\/II) stern drives, beginning serial number B664190 and up\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7168-9 O-ring fit?\u003c\/strong\u003e It is sized for the gimbal housing on MerCruiser Bravo (I\/II) stern drives with a beginning serial number of B664190 and up, where two of these O-rings are used per housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many O-rings come in a pack?\u003c\/strong\u003e The 18-7168-9 is sold in a pack of 5 rubber O-rings, giving enough for one full gimbal housing reseal (2 used per housing) plus spares.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-7168-9 O-ring made from?\u003c\/strong\u003e It is molded in black rubber, chosen for its resistance to marine gear lubricant, water, and the heat and vibration present at the gimbal housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many of these O-rings are needed per job?\u003c\/strong\u003e MerCruiser Bravo (I\/II) gimbal housings in the covered serial range use 2 of the 18-7168-9 O-rings each, so a single 5-pack covers one job with 3 left over.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the 18-7168-9 O-ring package?\u003c\/strong\u003e The packaged O-ring set measures 3.7 inches long by 3.6 inches wide by 0.2 inches high and weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7168-9 an OEM or aftermarket part?\u003c\/strong\u003e The 18-7168-9 is a Sierra-branded replacement O-ring manufactured to fit the MerCruiser Bravo (I\/II) gimbal housing specification rather than an OEM MerCruiser part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to replace this O-ring?\u003c\/strong\u003e This O-ring should be replaced any time the gimbal housing is opened for service, such as bellows, U-joint, or gimbal bearing work, since a removed O-ring loses its sealing compression set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the 18-7168-9 O-ring manufactured?\u003c\/strong\u003e The Sierra 18-7168-9 O-ring is made in Taiwan.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-7168-9 fit other MerCruiser stern drive models besides Bravo I\/II?\u003c\/strong\u003e The 18-7168-9 O-ring is specified for the Bravo (I\/II) gimbal housing at serial number B664190 and up; other stern drive models use different Sierra oil seal and O-ring part numbers for their gimbal housings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-7168-9 O-ring?\u003c\/strong\u003e It is black rubber, matching the color used across the Sierra gimbal housing O-ring line.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a UPC available for the 18-7168-9 pack?\u003c\/strong\u003e Yes, the Sierra 18-7168-9 O-ring pack carries UPC 808282165468.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988364865755,"sku":"SIE-18-7168-9","price":4.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-7168-9__62569.1737874651.500.750.jpg?v=1785188426","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-7168-9-marine-washer-for-volvo-penta-sterndrive-replaces-oem-12-19183-pack-of-5","provider":"Good Vibes Marina","version":"1.0","type":"link"}