{"product_id":"18643a5-18-2323-engine-coupler-assembly-for-mercruiser-alpha-marine-motor","title":"18643A5 18 2323 Engine Coupler Assembly for MerCruiser Alpha Marine Motor","description":"\u003cstrong\u003eThis Engine Coupler Assembly is a marine engine coupling compatible with MerCruiser Alpha Marine Motor and matches OEM Part# 18643A5, 18-2323.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis Engine Coupler Assembly connects the engine output shaft to the drive unit on MerCruiser Alpha marine motors. It is a direct replacement part for maintaining proper power transfer and alignment in stern drive systems. Boat owners and marine mechanics rely on this coupler for reliable performance.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrecision‑machined splines ensure smooth engagement and reduced vibration\u003c\/li\u003e\n\u003cli\u003eConstructed from hardened steel for long‑lasting durability in marine environments\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM part numbers 18643A5 and 18‑2323\u003c\/li\u003e\n\u003cli\u003eIncludes rubber dampener to absorb torque shocks and protect drivetrain components\u003c\/li\u003e\n\u003cli\u003eEngineered to meet or exceed original equipment specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser Alpha One (Gen I \u0026amp; Gen II)\u003c\/li\u003e\n\u003cli\u003eMerCruiser Alpha One MR\u003c\/li\u003e\n\u003cli\u003eMerCruiser Alpha One SS\u003c\/li\u003e\n\u003cli\u003eFits most MerCruiser sterndrive models using the Alpha drive system\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplacement of worn or damaged coupler in MerCruiser Alpha marine engines\u003c\/li\u003e\n\u003cli\u003eBoat engine repair and maintenance projects\u003c\/li\u003e\n\u003cli\u003eRestoration of older MerCruiser stern drive boats\u003c\/li\u003e\n\u003cli\u003eMarine mechanic overhaul and rebuild kits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 18643A5, 18‑2323\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Hardened steel with rubber dampener\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Drive:\u003c\/strong\u003e MerCruiser Alpha Series\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this coupler fit a MerCruiser Alpha One Gen II?\u003cstrong\u003e A:\u003c\/strong\u003e Yes, it is compatible with both Alpha One Gen I and Gen II models. Always verify your specific serial number for exact fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does the coupler include the rubber dampener?\u003cstrong\u003e A:\u003c\/strong\u003e Yes, the assembly comes with the rubber dampener installed to reduce torque shock and vibration.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eProduct appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":53676855722257,"sku":"ZZ2Y02401","price":415.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/57_0f8c4b14-f61a-4b65-a62a-d197c18de9ef.jpg?v=1781579524","url":"https:\/\/www.duraforce.com\/products\/18643a5-18-2323-engine-coupler-assembly-for-mercruiser-alpha-marine-motor","provider":"DURAFORCE","version":"1.0","type":"link"}