{"product_id":"3135990a1-mercury-mercruiser-bearing-genuine-quicksilver-oem-part","title":"3135990A1 Mercury MerCruiser Bearing | Genuine Quicksilver OEM Part","description":"\u003cp\u003e\n 🔧 Product Description\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Genuine Quicksilver Roller Bearing Assembly - Part Number: 31-35990A1\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Quicksilver roller bearing assembly used across early MerCruiser I, R, MR, Alpha One, Alpha One Gen II, TR \/ TRS and Vazer drive applications. This bearing is commonly associated with specific MerCruiser gear ratios including 1.65 \/ 1.62, 1.84 \/ 1.81 and 1.98 \/ 1.94 applications.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n ⚙️ Key Features\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine Quicksilver OEM bearing assembly\n\u003c\/p\u003e\n\u003cp\u003e\n • Correct Mercury part number 31-35990A1\n\u003c\/p\u003e\n\u003cp\u003e\n • Tapered roller bearing assembly\n\u003c\/p\u003e\n\u003cp\u003e\n • Used in multiple MerCruiser stern drive bearing applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Commonly suits I, R, MR, Alpha One and Alpha One Gen II drives with selected ratios\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM Supersession Chain:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 31-35990A1 current OEM bearing assembly reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM \/ Related Numbers:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 31-35990A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 35990A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 3135990A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 31-35990A 1\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Aftermarket \/ Verified Equivalents:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Sierra: 18-1161\n\u003c\/p\u003e\n\u003cp\u003e\n • GLM: 21540\n\u003c\/p\u003e\n\u003cp\u003e\n • SEI Marine: 93-102-04\n\u003c\/p\u003e\n\u003cp\u003e\n • Red Rhino: R-89449\n\u003c\/p\u003e\n\u003cp\u003e\n • OMC Stern Drive cross-reference: 983891 where specified\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🚤 Compatibility\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Commonly used on:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser I \/ R \/ MR \/ Alpha One and Alpha One Gen II sterndrive bearing applications\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser TR \/ TRS and Vazer drive applications where specified\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Drive \/ ratio models:\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 120 \/ 140 stern drive - 1967-1969\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 120 \/ 140 \/ 165 stern drive - 1970-1977\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 120 \/ 140, 1.98 ratio - 1970-1977\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 165, 1.65 ratio - 1970-1977\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 470 \/ 485, 1.84 ratio applications\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 260 \/ 898 \/ 228, 1.50 ratio applications\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 898 stern drive - 1978-1982\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 485 stern drive - 1980-1982\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 225-S \/ 233, 1.32 ratio stern drive - 1974-1977\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 888 stern drive, 1.50 ratio - 1971-1977\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser IA \/ IB \/ IC stern drives - 1964\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser IA \/ IB \/ IC EZ-Shift - 1965-1966\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser R \/ MR \/ Alpha One sterndrive - 1983-1990\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser R \/ MR \/ Alpha One transom assembly - 1983-1990\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser Alpha One Gen II sterndrive and transom assembly - 1991-1995\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser Alpha One Gen II sterndrive and transom assembly - 1996-1997\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser Alpha One Gen II sterndrive and transom assembly - 1998 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser TR \/ TRS stern drive - 1977-1993\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 255 TRS - 1973-1974\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 280 TRS - 1975-1976\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser Vazer drive \/ Vazer transom applications where 31-35990A1 is specified\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Drive Type: MerCruiser I \/ R \/ MR \/ Alpha One \/ Alpha One Gen II \/ TR \/ TRS \/ Vazer\n\u003c\/p\u003e\n\u003cp\u003e\n • Ratio Notes: Commonly used on 1.65 \/ 1.62, 1.84 \/ 1.81 and 1.98 \/ 1.94 ratio applications\n\u003c\/p\u003e\n\u003cp\u003e\n • System Type: Sterndrive roller bearing assembly\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔌 Function\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n The bearing supports rotating gear and shaft components inside the sterndrive, helping maintain correct alignment and load support.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Common signs of failure:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Drive whine or growling noise\n\u003c\/p\u003e\n\u003cp\u003e\n • Rough bearing feel during rebuild\n\u003c\/p\u003e\n\u003cp\u003e\n • Metal contamination in gear oil\n\u003c\/p\u003e\n\u003cp\u003e\n • Shaft movement or preload issue\n\u003c\/p\u003e\n\u003cp\u003e\n • Bearing replacement required during upper \/ lower drive service\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 📦 Condition\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine Quicksilver part\n\u003c\/p\u003e\n\u003cp\u003e\n • Brand new\n\u003c\/p\u003e\n\u003cp\u003e\n • Supplied in original or equivalent packaging\n\u003c\/p\u003e\n","brand":"Quicksilver","offers":[{"title":"Default Title","offer_id":53387987026212,"sku":"35990A 1","price":90.55,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_13ef347f-7a07-473f-a43d-1e0089c24293.jpg?v=1777210398","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/3135990a1-mercury-mercruiser-bearing-genuine-quicksilver-oem-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}