--- product_id: 402292461 title: "USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5\" Differential with HD Positraction/Locker" brand: "usa standard gear" price: "17918000₫" currency: VND in_stock: true reviews_count: 5 category: "Usa Standard Gear" url: https://www.desertcart.vn/products/402292461-usa-standard-gear-zk-gm8-5-hd-master-overhaul-kit store_origin: VN region: Vietnam --- # Complete shim kit & hardware for precision fit Koyo bearings & races for ultimate durability Proudly USA-made, engineered beyond OEM specs USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker **Brand:** usa standard gear **Price:** 17918000₫ **Availability:** ✅ In Stock ## Summary > ⚙️ Upgrade your GM 8.5" differential with the overhaul kit that pros trust—don’t get left behind! ## Quick Answers - **What is this?** USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker by usa standard gear - **How much does it cost?** 17918000₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/402292461-usa-standard-gear-zk-gm8-5-hd-master-overhaul-kit) ## 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 - • **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. ## Overview 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. ## Description USA Standard Master Overhaul kits let you finish your install with confidence. Review: Arrived squished. Review: Worked well ## Features - USA Standard Master Overhaul kits let you finish your install with confidence - This kit 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 (if applicable), oil baffles and slingers (if applicable) - USA Standard Gear manufactures products that are engineered to surpass and exceed OEM specifications and eliminate points of failure through quality engineering, manufacturing, and quality control practices. ## Technical Specifications | Specification | Value | |---------------|-------| | 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 | ## Product Details - **Brand:** USA Standard Gear - **Global Trade Identification Number:** 00883584370574 - **Item Weight:** 5.9 Pounds - **Item dimensions L x W x H:** 12 x 12 x 3 inches - **UPC:** 883584370574 ## Images ![USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker - Image 1](https://m.media-amazon.com/images/I/71KRsnx5rjL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐ Review *by S***S on 5 February 2023* Arrived squished. ### ⭐⭐⭐⭐⭐ Review *by A***R on 19 December 2025* Worked well ### ⭐⭐⭐⭐ Review *by B***K on 16 August 2025* 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/402292461-usa-standard-gear-zk-gm8-5-hd-master-overhaul-kit](https://www.desertcart.vn/products/402292461-usa-standard-gear-zk-gm8-5-hd-master-overhaul-kit) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-20*