Yukon YK GM8.5-HD Master Overhaul Kit for GM 8.5" Diff with Aftermarket Positrac

Regular price: $190.95
Regular price: ~~$320.00~~
Sale price: $190.95

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In Stock: 6

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Product Specification:

SKU:YUKYK GM8.5-HD

MPN: YK GM8.5-HD

UPC: 883584140887

Weight: 6.1 lb

Inventory: 6

Type: Differential Overhaul Kits

Vehicle Fitment

GM 8.5" rear differential with aftermarket Posi/LSD (GM trucks/SUVs 1970s-present)

Features

Complete master overhaul kit tailored for GM 8.5" rear axle with aftermarket Posi components
Includes premium Timken bearings and races for superior durability
Full shim kit with SuperShims for precise gear set-up
Ring gear bolts, pinion nut and crush sleeve included where applicable
High-quality seals and oil baffles/slingers for optimal internal fluid control
Thread locker and marking compound with brush for correct pattern setup
Gasket and installation hardware included for leak-free assembly
Manufactured in USA with strict quality control standards

Specifications

Material: Timken bearings and races, high-quality seals, hardware & shims
Compatibility: GM 8.5" differential housing with aftermarket Posi units (e.g., Dura Grip, Eaton, Auburn, TrueTrac, Detroit Locker)
Weight: ~6 lbs total kit weight
Fit: Direct bolt-in; rebuild kit includes crush sleeve pinion on applicable setups
Warranty: 1-year limited manufacturer warranty
Emissions: 50-state legal rebuild application (sealed rebuild components)
Includes SuperShim carriers for fine backlash adjustment

Included Components

1x Master Overhaul Kit YK GM8.5-HD
1x Set of carrier bearings & races
1x Set of pinion bearings & races
1x Pinion seal
1x Complete Shim Kit including SuperShims
1x Pinion nut
1x Crush sleeve (if applicable)
1x Set ring gear bolts
1x Oil baffles/slingers
1x Thread locking compound
1x Marking compound with brush
1x Gasket

Product Description

The Yukon Gear & Axle YK GM8.5-HD Master Overhaul Kit is engineered to completely rebuild GM 8.5" rear differentials equipped with aftermarket limited slip or locking units such as Dura Grip, Eaton Posi, TrueTrac, Detroit Locker, or Auburn Pro-Series. This all-in-one kit includes everything needed for a precise differential rebuild - from premium Timken bearings and races to high-tolerance shim sets and hardware - ensuring your gear set-up is correct and long-lasting.

Ideal for performance builds, towing rigs, or heavy-duty daily use, the kit supports accurate backlash and pinion depth adjustments required for high-load or high-torque applications. With installation aids like marking compound and thread locker included, assembly is straightforward for experienced technicians or DIYers. This kit delivers reliable, quality components for GM 8.5" rear axle rebuilds in trucks and SUVs, backed by a 1-year limited warranty.