Drivetrain› Differentials and Rear-End Components
USA Standard (Yukon)
USA Standard Master Overhaul kit for the 99-08 GM 8.6IN differential
SKU: U018 ZK GM8.6
Moderate — 2–4 hours
Description
The kit contains carrier bearings and races, pinion bearings and races, a pinion seal, a complete shim kit, ring gear bolts, a pinion nut, a crush sleeve, thread locker, and marking compound with a brush and gasket. It also features Koyo bearings and races for enhanced reliability.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | USA Standard (Yukon) |
| Part Number | U018 ZK GM8.6 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy