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USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker

Name: USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker
Brand: Usa Standard Gear
SKU: 402292461
Price: 597.64 USD
Availability: InStock
Rating: 3.8 (5 reviews)

Product ID: 402292461

Details

Brand
USA Standard
Global Trade Identification Number
Item Weight
5.9 Pounds
Item dimensions L x W x H
12 x 12 x 3
UPC
883584370574

🔧Complete shim kit & hardware for precision fit

⚙️Koyo bearings & races for ultimate durability

🇺🇸Proudly USA-made, engineered beyond OEM specs

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$597.64

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Upgrade your GM 8.5" differential with the overhaul kit that pros trust—don’t get left behind!

MADE IN THE USA - Support domestic craftsmanship with a kit built for durability and precision.
OEM BEATING QUALITY - Manufactured to exceed OEM standards, eliminating common failure points for peace of mind.
ALL INCLUSIVE MASTER KIT - Includes carrier & pinion bearings, races, seal, shim kit, ring gear bolts, pinion nut, crush sleeve, oil baffles & slingers—everything you need in one box.
PLUG AND PLAY INSTALLATION - No assembly required—get your GM 8.5" differential back on the road faster and with confidence.
PRECISION ENGINEERED RELIABILITY - Koyo bearings and races ensure long-lasting, smooth differential performance.

The USA Standard Gear ZK GM8.5-HD Master Overhaul Kit is a comprehensive, USA-made solution designed to restore and enhance GM 8.5" differentials. Featuring premium Koyo bearings and races, a full shim kit, and all necessary hardware, this kit surpasses OEM standards to ensure durability, precision, and reliable performance for professional-grade vehicle maintenance.

Specifications

ASIN	B00GWLLOHO
Assembly Required	No
Brand	USA Standard Gear
Colour	Factory
Country of Origin	USA
Customer Reviews	4.1 4.1 out of 5 stars (312)
Date First Available	23 October 2013
Exterior	Machined
Generic Name	ZKGM8.5-HD Master Overhaul Kit for GM 8.5" Differential
Item Dimensions LxWxH	30.5 x 30.5 x 7.6 Centimeters
Item Weight	2 kg 680 g
Item model number	ZK GM8.5-HD
Manufacturer	USA Standard Gear
Manufacturer Part Number	ZK GM8.5-HD
Model	ZKGM8.5-HD Master Overhaul Kit for GM 8.5" Differential
OEM Part Number	ZKGM8.5HD
Product Dimensions	30.48 x 30.48 x 7.62 cm; 2.68 kg
Special Features	Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), This kit uses Koyo bearings and races, USA Standard Master Overhaul kits let you finish your install with confidence

Reviews

S**S

Arrived squished.

5.02.2023

A**R

Worked well

19.12.2025

B**K

Good affordable kit comparably hammered at the races forever not even a blemish. Just wish I knew I could get the pinion kit included for a couple extra bucks love the kit just wish they showed me that added option before hand

16.08.2025

A**W

Just what I needed for my ‘05 Tahoe z71.

16.12.2025

J**S

Bearings for carrier where wrong size. Just got at parts store. Bearings are of quality

17.12.2025

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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