Drivetrain Differentials and Rear-End Components

USA Standard (Yukon)

Rear Axle Kit Fits GM 8.5 Diff 30 Spline 6 Lug 33 Long

$185.67

SKU: U018 ZA K630101

In Stock
In Stock
Ships by Jun 10
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The USA Standard Gear ZA K630101 is a rear axle kit designed to fit GM 8.5-inch differentials. This axle kit features 30 splines and is 33 inches long with a 6-lug pattern.

Constructed with advanced alloys and heat-treated for strength, this replacement axle kit meets or exceeds OE quality. It includes essential components for repair or upgrade, such as wheel bearings, seals, differential cover gaskets, studs, and lug nuts, ensuring your vehicle can be back on the road quickly.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandUSA Standard (Yukon)
Part NumberU018 ZA K630101

Buy with Confidence

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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