{"product_id":"usa-standard-gear-zk-d80-a-4-125-o-d-master-overhaul-kit-complete","title":"USA Standard Gear ZK D80-A 4.125 O.D. Master Overhaul Kit - Complete","description":"\u003cp\u003eOur review of the USA Standard Gear ZK D80-A 4.125 O.D. Master Overhaul Kit finds it is aimed at experienced DIY mechanics and professional technicians who need a comprehensive set of parts to rebuild a Dana 80 differential. The single biggest reason to buy is that the kit arrives with nearly everything required to finish an overhaul in one package, including Koyo bearings and races, a pinion seal, and ring gear bolts, which reduces downtime and parts hunting. For anyone tackling a full carrier and pinion service, this kit is a time-saver and simplifies sourcing.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKoyo bearings and races:\u003c\/strong\u003e Uses well-regarded Koyo components to provide dependable bearing performance and longevity in the differential.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete bearing set:\u003c\/strong\u003e Includes both carrier and pinion bearings and races, enabling a full rebuild without separate shopping trips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePinion seal and shim kit:\u003c\/strong\u003e The included pinion seal and complete shim set help achieve correct pre-load and endplay when installing the gearset.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware included:\u003c\/strong\u003e Ring gear bolts and a pinion nut are provided so installers do not need to reuse old fasteners during reassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit type vehicle specific:\u003c\/strong\u003e Designed as a vehicle specific kit for Dana 80 applications, which helps ensure the core parts match common Dana 80 dimensions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil control parts:\u003c\/strong\u003e Includes oil baffles and slingers where applicable to help maintain proper oil management inside the carrier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe kit is best for professional mechanics and skilled home gearhead installers who are performing a full Dana 80 overhaul and want a single package that covers bearings, seals, shims and hardware. It is especially useful when the goal is to finish an install with confidence using known bearing brands like Koyo.\u003c\/p\u003e\n\u003cp\u003eCustomers with nonstandard or uncommon vehicle variations should verify fitment first, as some buyers reported fit issues with certain models such as late 90s Grand Cherokee variants. If you only need a single bearing or an uncommon part, a complete overhaul kit may be more than required.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComprehensive kit content lets installers complete a Dana 80 rebuild without sourcing multiple suppliers.\u003c\/li\u003e\n\u003cli\u003eKoyo bearings and races provide recognized component quality for long-term use.\u003c\/li\u003e\n\u003cli\u003eIncludes hardware and oil control parts so reassembly is straightforward and parts are fresh.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFit is vehicle specific and some customers report it may not fit every application, so double-check compatibility before purchase.\u003c\/li\u003e\n\u003cli\u003eSeal quality and the shim set received mixed feedback from users, so installers should inspect these parts during install.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eMaster Overhaul Kit for Dana 80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eZK D80-A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e4.125 in O.D.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eUSA Standard Gear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearings\u003c\/td\u003e\n\u003ctd\u003eKoyo bearings and races included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Hardware\u003c\/td\u003e\n\u003ctd\u003eRing gear bolts, pinion nut, crush sleeve where applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit Type\u003c\/td\u003e\n\u003ctd\u003eVehicle Specific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe USA Standard Gear ZK D80-A 4.125 O.D. Master Overhaul Kit is a solid value for anyone rebuilding a Dana 80 who wants a single, nearly complete package of bearings, races, seals, shims and hardware. Professionals and experienced DIYers will appreciate the Koyo bearings and the included fasteners, though buyers must confirm fitment for their specific vehicle and inspect the seal and shim components during assembly.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this kit include the pinion nut and ring gear bolts?\u003c\/strong\u003e\u003cbr\u003eYes, the kit ships with a pinion nut and ring gear bolts so you can reassemble without reusing old fasteners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the bearings OEM quality?\u003c\/strong\u003e\u003cbr\u003eThe kit uses Koyo bearings and races, which are recognized aftermarket components known for reliable performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my vehicle?\u003c\/strong\u003e\u003cbr\u003eFit is vehicle specific; verify the ZK D80-A compatibility with your Dana 80 variant before purchasing, as some users reported fit issues with certain models.\u003c\/p\u003e","brand":"USA Standard Gear","offers":[{"title":"Default Title","offer_id":48203013325019,"sku":"B0078U8WGO","price":318.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71RMQ4ue5SL._AC_SL1500.jpg?v=1770238660","url":"https:\/\/gearmusthave.com\/products\/usa-standard-gear-zk-d80-a-4-125-o-d-master-overhaul-kit-complete","provider":"GearMustHave","version":"1.0","type":"link"}