---
product_id: 14982064
title: "(ZK GM8.5) Master Overhaul Kit for GM 8.5\" Differential"
brand: "usa standard gear"
price: "$U11551"
currency: UYU
in_stock: true
reviews_count: 13
category: "Usa Standard Gear"
url: https://www.desertcart.uy/products/14982064-zk-gm8-5-master-overhaul-kit-for-gm-8-5
store_origin: UY
region: Uruguay
---

# Includes all essential hardware Complete overhaul kit USA-made quality parts (ZK GM8.5) Master Overhaul Kit for GM 8.5" Differential

**Brand:** usa standard gear
**Price:** $U11551
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your GM 8.5" differential with confidence—master the road like a pro!

## Quick Answers

- **What is this?** (ZK GM8.5) Master Overhaul Kit for GM 8.5" Differential by usa standard gear
- **How much does it cost?** $U11551 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/14982064-zk-gm8-5-master-overhaul-kit-for-gm-8-5)

## Best For

- usa standard gear enthusiasts

## Why This Product

- Trusted usa standard gear brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Inclusive Kit:** Carrier bearings, pinion bearings, seals, shims, bolts, and more—everything you need in one box.
- • **Tailored Precision Fit:** Vehicle-specific design ensures flawless installation every time.
- • **Premium Bearings & Seals:** Koyo bearings and races deliver unmatched durability and smooth operation.
- • **Trusted USA Craftsmanship:** Manufactured with rigorous quality standards for reliable, long-lasting performance.
- • **Pro-Grade Installation Tools:** Includes thread locking and marking compounds for a professional finish.

## Overview

The ZK GM8.5 Master Overhaul Kit by USA Standard Gear is a comprehensive, vehicle-specific differential rebuild kit featuring high-quality Koyo bearings, races, seals, and all necessary hardware. Designed for GM 8.5" differentials, it ensures a precise fit and professional-grade installation, backed by trusted USA manufacturing and extensive research for optimal performance and durability.

## Description

USA Standard Master Overhaul kits give you all the high quality parts you need to start & finish every differential job. Yukon offers more tailor-made kits than any other manufacturer in the industry to meet your specific installation needs. This kit uses Timken bearings and races along with high quality seals and small parts. Included in this kit 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), thread locking compound, marking compound with brush, and gasket. Yukon Master Overhaul kits are the most comprehensive and complete kits on the market. Yukon does extensive research to ensure that every kit is specially tailored to your application.

Review: Differential replacement bearings - Great quality
Review: Great quality, perfect fit. - Great quality. Everything fit in the spot it was designed to fit in. I didn’t use the seal, mine is reusable.

## Features

- Fit type: Vehicle Specific
- This kit uses Koyo bearings and races
- USA Standard Master Overhaul kits let you finish your install with confidence
- 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)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003O07BZ0 |
| Best Sellers Rank | #9,360 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Differential Assembly Kits |
| Brand | USA Standard Gear |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,732) |
| Date First Available | February 13, 2012 |
| Exterior | Machined |
| Is Discontinued By Manufacturer | Yes |
| Item Weight | 6 pounds |
| Item model number | ZK GM8.5 |
| Manufacturer | USA Standard Gear |
| Manufacturer Part Number | ZK GM8.5 |
| Model | ZKGM8.5 Rear Master Overhaul Kit for GM 8.5" Differential |
| OEM Part Number | ZKGM8.5 |

## Images

![(ZK GM8.5) Master Overhaul Kit for GM 8.5" Differential - Image 1](https://m.media-amazon.com/images/I/71zna0ECqbL.jpg)
![(ZK GM8.5) Master Overhaul Kit for GM 8.5" Differential - Image 2](https://m.media-amazon.com/images/I/81DWSSdB9rL.jpg)
![(ZK GM8.5) Master Overhaul Kit for GM 8.5" Differential - Image 3](https://m.media-amazon.com/images/I/81WG88Kxl0L.jpg)
![(ZK GM8.5) Master Overhaul Kit for GM 8.5" Differential - Image 4](https://m.media-amazon.com/images/I/81jsFZ4Sj4L.jpg)
![(ZK GM8.5) Master Overhaul Kit for GM 8.5" Differential - Image 5](https://m.media-amazon.com/images/I/61ps-F9Y+JL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Differential replacement bearings
*by E***N on February 24, 2026*

Great quality

### ⭐⭐⭐⭐⭐ Great quality, perfect fit.
*by D***K on February 4, 2026*

Great quality. Everything fit in the spot it was designed to fit in. I didn’t use the seal, mine is reusable.

### ⭐⭐⭐⭐⭐ GM 12 bolt truck differential rebuild kit
*by B***8 on January 27, 2026*

Everything was just as described, good quality bearings, very pleased with parts! Recommending the seller items!

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-11*