{"product_id":"yukon-gm-8-5in-master-overhaul-kit-rear-diff","title":"Yukon GM 8.5\" Rear Master Overhaul Kit - 28 Spline","description":"\u003cp\u003eThe \u003cstrong\u003eGM 8.5\" Rear Master Overhaul Kit\u003c\/strong\u003e provides the bearings, races, seal, shims, and setup components needed for a complete GM 8.5\" rear differential rebuild. Built around Timken bearing components, this kit is intended for gear changes, worn differential service, and complete axle rebuilds where pinion preload, carrier preload, backlash, and gear tooth contact pattern must be properly reset.\u003c\/p\u003e\n\n\u003cp\u003eThis kit is designed for GM 8.5\" rear axle applications using 1.625\" carrier journals and the LM501314 \/ LM501349 carrier bearing configuration. These axles were used across a wide range of GM cars, trucks, SUVs, vans, and performance platforms, so the actual differential configuration should always be verified before ordering rather than relying on vehicle year and model alone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCarrier Bearings and Races\u003c\/li\u003e\n\u003cli\u003ePinion Bearings and Races\u003c\/li\u003e\n\u003cli\u003ePinion Seal\u003c\/li\u003e\n\u003cli\u003eComplete Shim Kit\u003c\/li\u003e\n\u003cli\u003eRing Gear Bolts\u003c\/li\u003e\n\u003cli\u003ePinion Nut\u003c\/li\u003e\n\u003cli\u003eCrush Sleeve\u003c\/li\u003e\n\u003cli\u003eThread Locker\u003c\/li\u003e\n\u003cli\u003eGear Marking Compound with Brush\u003c\/li\u003e\n\u003cli\u003eDifferential Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cdetails class=\"details\"\u003e\n\u003csummary\u003e\u003cstrong\u003eSpecifications \u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\n\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ctable class=\"custom-specs-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eMaster Differential Overhaul Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAxle Application\u003c\/td\u003e\n\u003ctd\u003eGM 8.5\" Rear Differential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition\u003c\/td\u003e\n\u003ctd\u003eRear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearing Manufacturer\u003c\/td\u003e\n\u003ctd\u003eTimken\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarrier Bearing Configuration\u003c\/td\u003e\n\u003ctd\u003eLM501314 \/ LM501349\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarrier Journal Diameter\u003c\/td\u003e\n\u003ctd\u003e1.625\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAxle Spline Compatibility\u003c\/td\u003e\n\u003ctd\u003eCompatible with Many 28-Spline GM 8.5\" Applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarrier Bearings and Races\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePinion Bearings and Races\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePinion Seal\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShim Kit\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRing Gear Bolts\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrush Sleeve\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePinion Nut\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifferential Gasket\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSetup Materials\u003c\/td\u003e\n\u003ctd\u003eThread Locker and Gear Marking Compound with Brush\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003chr\u003e\n\n\u003cdetails class=\"details\"\u003e\n\u003csummary\u003e\u003cstrong\u003eFitment \u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\n\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ctable class=\"custom-specs-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuick\u003c\/td\u003e\n\u003ctd\u003eRegal\u003c\/td\u003e\n\u003ctd\u003e1973–1987\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuick\u003c\/td\u003e\n\u003ctd\u003eRiviera\u003c\/td\u003e\n\u003ctd\u003e1975–1978\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCadillac\u003c\/td\u003e\n\u003ctd\u003eEscalade\u003c\/td\u003e\n\u003ctd\u003e1999–2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eBlazer\u003c\/td\u003e\n\u003ctd\u003e1987–1994\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eC1500 \/ K1500\u003c\/td\u003e\n\u003ctd\u003e1988–1999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCamaro\u003c\/td\u003e\n\u003ctd\u003e1970–1981\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCaprice \/ Impala\u003c\/td\u003e\n\u003ctd\u003e1970–1996\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eExpress 1500\u003c\/td\u003e\n\u003ctd\u003e1996–2003\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eMonte Carlo\u003c\/td\u003e\n\u003ctd\u003e1973–1978\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eNova\u003c\/td\u003e\n\u003ctd\u003e1970–1979\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eS10\u003c\/td\u003e\n\u003ctd\u003e1994–2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSuburban 1500\u003c\/td\u003e\n\u003ctd\u003e1992–2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eTahoe\u003c\/td\u003e\n\u003ctd\u003e1995–1998\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eC1500 \/ K1500\u003c\/td\u003e\n\u003ctd\u003e1979–1999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eG1500\u003c\/td\u003e\n\u003ctd\u003e1979–1995\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eSavana 1500\u003c\/td\u003e\n\u003ctd\u003e1996–2003\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eSonoma\u003c\/td\u003e\n\u003ctd\u003e1994–2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eYukon\u003c\/td\u003e\n\u003ctd\u003e1992–2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOldsmobile\u003c\/td\u003e\n\u003ctd\u003eCutlass\u003c\/td\u003e\n\u003ctd\u003e1970–1977\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOldsmobile\u003c\/td\u003e\n\u003ctd\u003eOmega\u003c\/td\u003e\n\u003ctd\u003e1973–1979\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eBonneville\u003c\/td\u003e\n\u003ctd\u003e1970–1986\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003e1970–1981\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eGTO\u003c\/td\u003e\n\u003ctd\u003e1970–1973\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eGrand Prix\u003c\/td\u003e\n\u003ctd\u003e1971–1987\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eLeMans\u003c\/td\u003e\n\u003ctd\u003e1971–1981\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eFitment Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits GM 8.5\" rear differential applications only.\u003c\/li\u003e\n\u003cli\u003eCompatible with many 28-spline axle configurations.\u003c\/li\u003e\n\u003cli\u003eDesigned for applications using 1.625\" carrier journals.\u003c\/li\u003e\n\u003cli\u003eUses LM501314 \/ LM501349 carrier bearings.\u003c\/li\u003e\n\u003cli\u003eVehicle year and model do not guarantee fitment because many GM vehicles were available with multiple rear axle configurations.\u003c\/li\u003e\n\u003cli\u003eLater truck, SUV, and van applications may use different carrier bearings, seals, or axle spline counts.\u003c\/li\u003e\n\u003cli\u003eVerify ring gear diameter, carrier journal size, axle spline count, bearing numbers, and housing configuration before ordering.\u003c\/li\u003e\n\u003cli\u003eProfessional differential setup is recommended because pinion depth, bearing preload, backlash, and gear contact pattern must be established correctly during installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003chr\u003e\n\n\u003cdetails class=\"details\"\u003e\n\u003csummary\u003e\u003cb\u003eFAQ\u003c\/b\u003e \u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\n\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ch3\u003eWhat is included in a GM 8.5\" master overhaul kit?\u003c\/h3\u003e\n\u003cp\u003eThis kit includes the carrier and pinion bearings and races, pinion seal, shims, ring gear bolts, pinion nut, crush sleeve, differential gasket, thread locker, and gear marking compound needed for a complete differential rebuild and setup.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I know if I have a GM 8.5\" rear differential?\u003c\/h3\u003e\n\u003cp\u003eIdentify the axle by the housing, differential cover shape, ring gear size, casting features, and internal bearing dimensions rather than relying only on the vehicle model. GM used multiple rear axle designs across many of the vehicles listed above.\u003c\/p\u003e\n\n\u003ch3\u003eWill this kit fit both 28-spline and 30-spline GM 8.5 axles?\u003c\/h3\u003e\n\u003cp\u003eThe supplied fitment information identifies this kit as compatible with many 28-spline GM 8.5\" applications. Do not assume compatibility with a 30-spline carrier without confirming the carrier journal size, bearing numbers, and differential configuration first.\u003c\/p\u003e\n\n\u003ch3\u003eDo I need a master overhaul kit when installing new ring and pinion gears?\u003c\/h3\u003e\n\u003cp\u003eA master overhaul kit is recommended when changing gears or rebuilding a high-mileage differential because correct setup depends on fresh bearings and accurate pinion preload, carrier preload, backlash, and gear contact pattern.\u003c\/p\u003e\n\n\u003ch3\u003eWhy does the carrier journal size matter when ordering a GM 8.5 rebuild kit?\u003c\/h3\u003e\n\u003cp\u003eThe carrier bearings must match the diameter of the differential carrier journals. This kit is specified for 1.625\" carrier journals using LM501314 \/ LM501349 bearings, so confirming that dimension helps prevent ordering the wrong bearing package.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003chr\u003e","brand":"Yukon Gear \u0026 Axle","offers":[{"title":"Default Title","offer_id":57726157553830,"sku":"YK GM8.5","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/0359a87d2f45a3c0b63a0e157a3c59a2L.jpg?v=1792610932","url":"https:\/\/wideopendesign.com\/products\/yukon-gm-8-5in-master-overhaul-kit-rear-diff","provider":"Wide Open Design","version":"1.0","type":"link"}