{"product_id":"retaining-nut-for-mercruiser-r-mr-alpha-i-gen-ii-816811-2-8168111-18-3752","title":"Retaining Nut for MerCruiser R-MR Alpha I Gen II 816811-2 8168111 18-3752","description":"\u003cstrong\u003eThis Retaining Nut is a replacement retaining nut compatible with MerCruiser R-MR Alpha I Gen II and matches OEM Part# 816811-2, 8168111, 18-3752.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis retaining nut is designed for MerCruiser R-MR Alpha I Gen II outdrives, securing components in the drive assembly. It is a critical fastener for maintaining proper alignment and torque. Boat owners and marine mechanics rely on this retaining nut for reliable performance.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrecision-threaded to match MerCruiser specifications.\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant material suitable for marine environments.\u003c\/li\u003e\n\u003cli\u003eEnsures secure retention of drive shaft components.\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM part numbers 816811-2, 8168111, and 18-3752.\u003c\/li\u003e\n\u003cli\u003eEasy installation with standard tools.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMerCruiser R-MR Alpha I Gen II outdrives.\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSecuring the propeller shaft or other rotating components on MerCruiser Alpha I Gen II drives.\u003c\/li\u003e\n\u003cli\u003eReplacing worn or damaged retaining nuts during routine drive maintenance.\u003c\/li\u003e\n\u003cli\u003eUsed in marine engine and outdrive repair or rebuild projects.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Corrosion-resistant steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e As per OEM specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 816811-2, 8168111, 18-3752\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this retaining nut fit my MerCruiser Alpha I Gen II?\u003cstrong\u003e A:\u003c\/strong\u003e Yes, it is specifically designed for the R-MR Alpha I Gen II outdrive and matches OEM part numbers 816811-2, 8168111, and 18-3752.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this nut reusable after removal?\u003cstrong\u003e A:\u003c\/strong\u003e It is generally recommended to replace retaining nuts with new ones during reassembly to ensure proper torque and locking ability.\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":53676744835345,"sku":"ZZ2Y01073","price":48.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/57_4ff954ca-f926-431b-b284-b4a490de0f6b.jpg?v=1781577506","url":"https:\/\/www.duraforce.com\/products\/retaining-nut-for-mercruiser-r-mr-alpha-i-gen-ii-816811-2-8168111-18-3752","provider":"DURAFORCE","version":"1.0","type":"link"}