{"product_id":"yukon-dana-70u-master-overhaul-kit","title":"Yukon Dana 70U Master Overhaul Kit for Rear Differentials","description":"\u003cp\u003eThe \u003cstrong\u003eYukon Master Overhaul Kit for Dana 70U Rear Axles\u003c\/strong\u003e includes the bearings, races, seals, shims, hardware, and setup materials needed to properly rebuild or install gears in a compatible Dana 70U rear differential. Built around quality Timken bearings and races, this complete kit helps restore proper carrier preload, pinion preload, backlash, and dependable operation in heavy-duty trucks, tow rigs, vans, commercial vehicles, and off-road builds.\u003c\/p\u003e\n\n\u003cp\u003eDana 70U axles regularly operate under substantial load from towing, payload weight, oversized tires, and high-torque drivetrains. Replacing the critical wear components during a rebuild or gear change gives the installer the parts needed to establish the correct bearing preload and gear pattern instead of reusing components that may already be worn or fatigued.\u003c\/p\u003e\n\n\u003ch4\u003eIncludes:\u003c\/h4\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\u003eOil Baffles and Slingers\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      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSpecification\u003c\/th\u003e\n          \u003cth\u003eDetails\u003c\/th\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eManufacturer\u003c\/td\u003e\n          \u003ctd\u003eYukon Gear \u0026amp; Axle\u003c\/td\u003e\n        \u003c\/tr\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\u003eDana Spicer 70U Rear Differential\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eAxle Spline Compatibility\u003c\/td\u003e\n          \u003ctd\u003e32-Spline and 35-Spline Applications\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eBearing Brand\u003c\/td\u003e\n          \u003ctd\u003eTimken\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eInner Pinion Bearing Configuration\u003c\/td\u003e\n          \u003ctd\u003eHM803110 \/ HM803149\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eCarrier Bearing Configuration\u003c\/td\u003e\n          \u003ctd\u003e382S \/ 387A\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eRecommended Service\u003c\/td\u003e\n          \u003ctd\u003eDifferential Rebuild or Ring-and-Pinion Installation\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eAxle Position\u003c\/td\u003e\n          \u003ctd\u003eRear\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      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth\u003eYear\u003c\/th\u003e\n          \u003cth\u003eMake\u003c\/th\u003e\n          \u003cth\u003eModel\u003c\/th\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1984–1990\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eG30\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1971–1980\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eB300\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1981–1994\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eB350\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1984–1993\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eD250\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1981–1993\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eD350\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1994–2002\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eRam 2500\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1994–2002\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eRam 3500\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1999–2003\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eRam 2500 Van\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1999–2003\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eRam 3500 Van\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1984–1993\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eW250\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1984–1993\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eW350\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1982–1998\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eE-350 Econoline\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1999\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eE-350 Econoline Club Wagon\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e2000–2012\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eE-350 Super Duty\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1970–2002\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eF-350\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1999–2002\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eF-350 Super Duty\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1984–1990\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eC3500\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1973–1991\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eG35 \/ G3500\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1984–1990\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eK3500\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1987\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eR3500\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1987\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eV3500\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n\n    \u003ch3\u003eFitment Notes\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003eFits Dana 70U rear differential applications only.\u003c\/li\u003e\n      \u003cli\u003eCompatible with listed 32-spline and 35-spline Dana 70U axle configurations.\u003c\/li\u003e\n      \u003cli\u003eVehicle year, make, and model alone do not guarantee axle fitment.\u003c\/li\u003e\n      \u003cli\u003eVerify the axle identification, carrier bearing numbers, pinion bearing configuration, and spline count before ordering.\u003c\/li\u003e\n      \u003cli\u003eAxles may have been replaced or swapped during the vehicle's service life.\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\u003cstrong\u003eTech Insight \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    \u003ch3\u003e1. When should I install a master overhaul kit?\u003c\/h3\u003e\n    \u003cp\u003eA master overhaul kit should be used when rebuilding the differential, replacing a damaged bearing, or installing a new ring-and-pinion set. Replacing the bearings, races, seals, shims, and hardware together gives the installer a consistent foundation for setting up the differential.\u003c\/p\u003e\n\n    \u003ch3\u003e2. Why should the old bearings not be reused during a gear change?\u003c\/h3\u003e\n    \u003cp\u003eUsed bearings may have wear patterns, looseness, or surface damage that can affect preload and gear alignment. Reusing worn components can contribute to gear noise, excessive heat, and shortened ring-and-pinion life.\u003c\/p\u003e\n\n    \u003ch3\u003e3. Does this kit fit every Dana 70 axle?\u003c\/h3\u003e\n    \u003cp\u003eNo. This kit is specifically listed for Dana 70U rear differential applications using the bearing configurations shown in the specifications. Other Dana 70 variants may use different carrier bearings, pinion bearings, seals, or setup components.\u003c\/p\u003e\n\n    \u003ch3\u003e4. Can this kit be used with both 32-spline and 35-spline axles?\u003c\/h3\u003e\n    \u003cp\u003eYes, the supplied fitment information lists compatibility with both 32-spline and 35-spline Dana 70U applications. The axle model and bearing configuration should still be verified before ordering.\u003c\/p\u003e\n\n    \u003ch3\u003e5. What measurements must be set during installation?\u003c\/h3\u003e\n    \u003cp\u003eA proper differential setup requires accurate pinion depth, pinion bearing preload, carrier bearing preload, ring gear backlash, and contact pattern. These adjustments require the correct measuring tools and should be completed by an experienced installer.\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":57726156112038,"sku":"YK D70-U","price":410.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/Dana-70U-master-overhaul-kit-1.jpg?v=1792610930","url":"https:\/\/wideopendesign.com\/products\/yukon-dana-70u-master-overhaul-kit","provider":"Wide Open Design, Inc.","version":"1.0","type":"link"}