{"product_id":"318m0146566-mercury-mercruiser-bearing-genuine-quicksilver-oem-part","title":"318M0146566 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 Upper Driveshaft Bearing Cup\/Cone - Part Number: 31-8M0146566\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Quicksilver upper driveshaft cup and cone bearing assembly for selected Mercury V6, V8, V10, Verado, Pro XS, SeaPro and Racing outboard gearcases. This bearing is commonly used with 4.80 Torpedo, 5.44 Torpedo, Torque Master and Sport Master gear housings in high-output Mercury outboard 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 31-8M0146566\n\u003c\/p\u003e\n\u003cp\u003e\n • Cup \/ cone upper driveshaft bearing assembly\n\u003c\/p\u003e\n\u003cp\u003e\n • Supersedes earlier 31-36387A1 bearing reference\n\u003c\/p\u003e\n\u003cp\u003e\n • Used on selected 110HP to 450HP Mercury outboard gearcase applications where specified\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 • 31-8M0146566 → Supersedes 31-36387A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 31-36387A1 earlier 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 • 31-8M0146566\n\u003c\/p\u003e\n\u003cp\u003e\n • 8M0146566\n\u003c\/p\u003e\n\u003cp\u003e\n • 318M0146566\n\u003c\/p\u003e\n\u003cp\u003e\n • 31-36387A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 36387A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 31-8M0146553 related bearing assembly\n\u003c\/p\u003e\n\u003cp\u003e\n • 8245191 related retainer\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 • No direct aftermarket equivalent preferred over OEM for Mercury high-output gearcase service\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 • Mercury upper driveshaft \/ gear housing bearing applications\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury Racing Torque Master, Sport Master and 5.44 Torpedo gear housings\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 • Engine \/ gearcase models:\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 175HP 3.4L V6 FourStroke, 4.80 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 175HP 3.4L V6 FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 175HP 3.4L V6 Pro XS FourStroke, 4.80 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 200HP 3.4L V6 FourStroke, 4.80 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 200HP 3.4L V6 FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 200HP 3.4L V6 SeaPro FourStroke, 4.80 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 200HP 3.4L V6 SeaPro FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 225HP 3.4L V6 FourStroke, 4.80 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 225HP 3.4L V6 FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 200HP 4.6L V8 Pro XS FourStroke, 4.80 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 200HP 4.6L V8 Pro XS FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 225HP 4.6L V8 Pro XS FourStroke, 4.80 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 225HP 4.6L V8 Pro XS FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 225HP 4.6L V8 SeaPro FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 250HP 4.6L V8 FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 250HP 4.6L V8 Pro XS FourStroke, 4.80 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 250HP 4.6L V8 Pro XS FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 250HP 4.6L V8 SeaPro FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 250HP 4.6L V8 Verado FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 250R 4.6L V8 Racing, 5.44 Torpedo gear housing - serial 1E080500 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 250R 4.6L V8 Racing, Torque Master gear housing - serial 1E080500 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 250R 4.6L V8 Racing, Sport Master gear housing - serial 1E080500 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 300HP 4.6L V8 FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 300HP 4.6L V8 Pro XS FourStroke, 4.80 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 300HP 4.6L V8 Pro XS FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 300HP 4.6L V8 SeaPro FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 300HP 4.6L V8 Verado FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 300HP 4.6L V8 Verado SeaPro FourStroke, 5.44 Torpedo gear housing - serial 2B529482 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 300R 4.6L V8 Racing, 5.44 Torpedo gear housing - serial 1E080500 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 300R 4.6L V8 Racing, Torque Master gear housing - serial 1E080500 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 300R 4.6L V8 Racing, Sport Master gear housing - serial 1E080500 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 300R 4.6L V8 AMS Racing, 5.44 Torpedo \/ 1.60 applications - serial 1E081459 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 400R 5.7L V10 Verado Racing, 5.44 Torpedo \/ 1.60 applications - serial 3B272954 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 450R 4.6L V8 Racing, 5.44 Torpedo \/ 1.60 applications - serial 1E083006 and up\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • HP Range: commonly 175HP - 450R where specified, plus other Mercury 110HP+ applications where the diagram specifies 31-8M0146566\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine Type: Mercury V6 \/ V8 \/ V10 FourStroke, Verado, Pro XS, SeaPro and Racing outboard\n\u003c\/p\u003e\n\u003cp\u003e\n • System Type: Upper driveshaft bearing cup \/ cone 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 assembly supports the upper driveshaft and helps maintain gearcase alignment under propeller thrust, engine torque and vertical shaft loading.\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 • Gearcase noise or vibration\n\u003c\/p\u003e\n\u003cp\u003e\n • Metal contamination in gear oil\n\u003c\/p\u003e\n\u003cp\u003e\n • Excessive shaft movement or bearing play\n\u003c\/p\u003e\n\u003cp\u003e\n • Bearing roughness during gearcase inspection\n\u003c\/p\u003e\n\u003cp\u003e\n • Required replacement during lower-unit rebuild or reseal 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":53388161745188,"sku":"X450382","price":55.25,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_3a2203ac-1d15-4c6e-b9e4-0a0b4b83cda2.jpg?v=1777212558","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/318m0146566-mercury-mercruiser-bearing-genuine-quicksilver-oem-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}