{"product_id":"ghmarine-bellows-kit-for-mercruiser-alpha-one-gen-2-1991-gimbal-bearing-gasket-set","title":"GHmarine Bellows Kit for MerCruiser Alpha One Gen 2 (1991+) — Gimbal Bearing \u0026 Gasket Set","description":"\u003cp\u003e\u003cstrong\u003eGHmarine 803099T1 Bellows Kit is a complete transom service replacement for MerCruiser Alpha One Gen 2 stern drives, supplying exhaust, U-joint and shift cable bellows plus a gimbal bearing and installation gasket set.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your MerCruiser Alpha One Gen 2 stern drive (1991 and newer) is showing signs of wear at the transom connection, this GHmarine kit provides the parts needed to restore the watertight, flexible joint between the engine and drive. It replaces OEM part 30-803099T1 (also referenced as Sierra 18-8206-1 or Mallory 9-72904) and bundles the common wear items technicians replace during a transom service, saving time and reducing return trips.\u003c\/p\u003e\n\n\u003ch3\u003eWhat exactly comes in this bellows kit and why is each piece included?\u003c\/h3\u003e\n\n\u003cp\u003eThe kit groups the components most likely to degrade at the transom: the U-joint bellow, exhaust bellow and shift cable bellow protect moving parts from water and corrosion. The included gimbal bearing supports the drive’s pivoting motion while the gasket kit and 3\/4\" water hose make the assembly ready for a straightforward service.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eU-joint bellow — seals and flex protection for the universal joint\u003c\/li\u003e\n  \u003cli\u003eExhaust bellow — routes exhaust while keeping water out\u003c\/li\u003e\n  \u003cli\u003eShift cable bellow — protects shift linkage from spray and salt\u003c\/li\u003e\n  \u003cli\u003eGasket kit and gimbal bearing — ensures proper sealing and smooth pivot\u003c\/li\u003e\n  \u003cli\u003e3\/4\" water hose — replaces worn transom cooling hose\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will replacing these parts help my stern drive perform?\u003c\/h3\u003e\n\n\u003cp\u003eFresh bellows and a new gimbal bearing reduce the risk of water intrusion into the boat and lower the chance of sudden drive failure due to a corroded joint. Replacing worn components during a transom service restores proper alignment and reduces vibration for smoother operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrevents water leaks through damaged bellows\u003c\/li\u003e\n  \u003cli\u003eReduces corrosion risk on the U-joint and internal components\u003c\/li\u003e\n  \u003cli\u003eStabilizes drive alignment and lowers vibration\u003c\/li\u003e\n  \u003cli\u003eHelps maintain OEM-style sealing at the transom\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this kit compatible with my engine and how do I confirm fit?\u003c\/h3\u003e\n\n\u003cp\u003eThis kit is designed for MerCruiser Alpha One Gen 2 stern drives from 1991 onward and replaces the OEM part number 30-803099T1 (Sierra 18-8206-1 \/ Mallory 9-72904). If you’re unsure about fit, check your stern drive model and serial tag or contact the seller with your engine model for verification before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with MerCruiser Alpha One Gen 2 (1991+)\u003c\/li\u003e\n  \u003cli\u003eReplaces OEM 30-803099T1 and equivalent aftermarket numbers\u003c\/li\u003e\n  \u003cli\u003eConfirm by matching your drive model and serial information\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what should I expect during service?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is a moderate job typically handled during a transom service—an experienced DIYer can complete it, but many owners prefer a marine mechanic for correct alignment and bearing replacement. The kit includes most seals and a hose needed for reassembly, but basic tools and torque procedures are required to ensure a reliable seal.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eModerate difficulty: mechanical skill and standard tools required\u003c\/li\u003e\n  \u003cli\u003eExpect to remove the drive for gimbal bearing replacement in many cases\u003c\/li\u003e\n  \u003cli\u003eIncluded gasket kit and hose reduce the need for extra parts\u003c\/li\u003e\n  \u003cli\u003eProfessional service recommended for first-time installers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: boat owners and marine technicians who operate MerCruiser Alpha One Gen 2 stern drives and want a complete transom service kit to restore sealing and joint function. It’s ideal for preventative maintenance, addressing visible bellows cracks or leaks, and for anyone replacing the gimbal bearing during routine drive service.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit fit MerCruiser Alpha One Gen 2 models?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s designed for MerCruiser Alpha One Gen 2 stern drives (1991 and up) and replaces OEM 30-803099T1.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are all seals and hoses included for a transom service?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit includes U-joint, exhaust and shift bellows, gimbal bearing, gasket kit, and a 3\/4\" water hose.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GHmarine","offers":[{"title":"Default Title","offer_id":48083865305246,"sku":"B07DCH8NG7","price":102.71,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ghmarine-bellows-kit-front-package.jpg?v=1785837591","url":"https:\/\/northtrailauto.ca\/products\/ghmarine-bellows-kit-for-mercruiser-alpha-one-gen-2-1991-gimbal-bearing-gasket-set","provider":"North Trail Auto","version":"1.0","type":"link"}