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Drivetrain› Differentials and Rear-End Components

USA Standard Gear

GM 9.5" 12-Bolt Master Differential Overhaul Kit

$489.60 $462.58 Save $27.02

SKU: ZK GM9.5-12B

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Overview

The USA Standard Gear ZK GM9.5-12B is a master overhaul kit designed for GM 9.5" 12-bolt differentials. This kit provides all the necessary parts for a complete differential overhaul. It features Koyo bearings and races, and includes components such as carrier bearings and races, pinion bearings and races, a pinion seal, a complete shim kit, ring gear bolts, a pinion nut, crush sleeve, oil baffles, and slingers, along with locking compound, marking compound, and a gasket.
Show original supplier description
The USA Standard Gear ZK GM9.5-12B is a comprehensive master overhaul kit engineered for GM 9.5-inch, 12-bolt differentials. It ensures you have the exact parts required for a successful installation. Included in the kit are carrier bearings and races, pinion bearings and races, a pinion seal, a complete shim kit, ring gear bolts, pinion nut, crush sleeve (where applicable), oil baffles and slingers (where applicable), threading locking compound, marking compound with a brush, and a gasket. USA Standard Gear aims to offer the most comprehensive and complete master rebuild kit available on the market. The ZK GM9.5-12B kit is specifically designed to fit 2014 and newer GM 9.5-inch differentials with a 12-bolt rear cover. It is compatible with a range of GM vehicles including Cadillac Escalade (2014-2017), Chevrolet Tahoe (2014-2017), Chevrolet Suburban 1500 (2014) and Chevrolet Suburban (2015-2017), Chevrolet Silverado 1500 (2014-2017), Chevrolet Express 2500 (2014-2017) and Savana 2500 (2014-2017), GMC Yukon XL 1500 (2014) and Yukon XL (2015-2017), GMC Yukon (2014-2017), GMC Sierra 1500 (2014-2017), and GMC Savana 1500 (2014).

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandUSA Standard Gear
Part NumberZK GM9.5-12B
CategoryDrivetrain
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Returns & Fitment

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.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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