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Drivetrain› Differentials and Rear-End Components

USA Standard Gear

Rear Axle Kit for GM 8.6

Name: Rear Axle Kit for GM 8.6
Brand: USA Standard Gear
SKU: ZA K630153

$273.88

SKU: ZA K630153

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$100 Minimum Order

Non-Returnable Item

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Overview

The USA Standard Gear ZA K630153 is a rear axle kit designed for GM 8.6" differentials. It features 30 spline count and a 6 lug configuration with a shaft length of 31-9/16".

This kit includes essential components such as a wheel bearing, seal, differential cover gasket, studs, and lug nuts. USA Standard Gear utilizes advanced heat-treating processes to ensure a strong and durable axle, designed and built to meet or exceed original equipment quality.

Show original supplier description

The USA Standard Gear ZA K630153 is a rear axle kit engineered for GM 8.6-inch differentials, offering a robust solution for replacement, repair, or upgrade needs. This kit is specifically designed with a 30 spline count and a 6-lug configuration, featuring a right-hand side shaft length of 31-9/16 inches. Crafted with advanced alloys and employing the latest heat-treating technologies, USA Standard Gear produces a strong and durable axle. The kit comes complete with all necessary components for installation, including a wheel bearing, seal, differential cover gasket, studs, and lug nuts, ensuring a comprehensive solution to get your vehicle back on the road quickly and reliably. Designed and built to meet or exceed original equipment (OE) quality standards, this axle kit promises reliable performance and longevity. Its advanced heat-treatment results in a stronger, more durable axle compared to standard components.

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

Brand	USA Standard Gear
Part Number	ZA K630153
Category	Drivetrain

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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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