{"product_id":"mercury-mercruiser-bearing-assembly-32573a1","title":"Mercury MerCruiser - Tapered Roller Bearing Assembly - 31-32573A1","description":"\u003cp\u003eThe Mercury MerCruiser Quicksilver Tapered Roller Bearing Assembly 31-32573A1 is an OEM upper gearcase bearing component used in compatible MerCruiser sterndrive assemblies. This bearing supports and stabilizes the driven gear inside the upper drive shaft housing, helping maintain proper gear alignment under load.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury\/Quicksilver tapered roller bearing assembly\u003c\/li\u003e\n\u003cli\u003ePart number: 31-32573A1\u003c\/li\u003e\n\u003cli\u003eAlso referenced as 32573A1\u003c\/li\u003e\n\u003cli\u003eUpper gearcase driven gear bearing assembly\u003c\/li\u003e\n\u003cli\u003eSupports gear alignment and high-load rotation\u003c\/li\u003e\n\u003cli\u003eGTIN \/ UPC: 745061135833\u003c\/li\u003e\n\u003cli\u003eCommon typo references include 321573A and 321573A1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eDrive Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFits select MerCruiser #1, R, MR, Alpha One, and Alpha One Generation II sterndrive models. Commonly associated with 1.50:1 and 1.47:1 gear ratio applications.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eVerify fitment by drive serial number, gear ratio, upper gearcase diagram, and original bearing part number before ordering. Bearing fitment can vary by drive generation, gear ratio, shaft configuration, and upper housing design.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this bearing if it is noisy, pitted, scored, loose, overheated, contaminated by water intrusion, or damaged during upper gearcase disassembly. It should also be inspected during gearset, seal, shaft, or upper housing service.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInstallation requires upper gearcase disassembly, correct bearing tools, and proper preload\/contact-pattern setup. Inspect the gearset, bearing race, shims, seals, and lubricant condition during service. Always pressure-test the drive after reassembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePrimary Mercury references: 31-32573A1 and 32573A1. Common catalog typo references include 321573A and 321573A1. Common aftermarket interchange: Sterndrive Engineering \/ SEI 93-102-03.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUpper gearcase bearings must match the drive generation and gear ratio. A bearing that looks correct on the bench can still be wrong for the gearset, so checking the serial number and ratio before teardown saves time and protects the new parts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563852202020,"sku":"32573A1","price":100.05,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/dfe2f1ed-1d50-409d-ad11-94d8726be60d.png?v=1779399300","url":"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-bearing-assembly-32573a1","provider":"Marisol Marine Company","version":"1.0","type":"link"}