USA Standard Gear (ZK GM8.6) Master Overhaul Kit for GM 8.6 Differential


Price: $92.70
(as of Jul 19, 2025 12:34:52 UTC – Details)


Fits 1999-2008 GM 8. 6″ Uses Koyo bearings and races Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush and gasket. Technical Notes:
USA Standard Master Overhaul kits let you finish your install with confidence
This kit uses Koyo bearings and races
Includes carrier bearings and races,
Includes complete shim kit
Includes ing gear bolts, pinion nut, crush sleeve
Includes thread locker, marking compound with brush and gasket
Fit type: Vehicle Specific

Customers say

Customers find this differential overhaul kit to be a complete set with quality components, including Koyo bearings, and appreciate its functionality, with one customer noting it works perfectly with Ford 4.10 gears. Moreover, the installation instructions are useful, and the kit comes with lots of shims. However, the fit and bearing quality receive mixed feedback – while some say everything fits perfectly, others report issues with pinion bearings being too small, and while some praise the Koyo bearings, others received the wrong ones. Customers consider it good value for money.

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