Drivetrain Differentials and Rear-End Components

Yukon Gear & Axle

REAR AXLE KIT FITS GM 8.5" DIFF 30

$261.11

SKU: Y001 ZA K630101

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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

REAR AXLE KIT FITS GM 8.5" DIFF 30

MIA's Description

The Yukon Gear & Axle ZA K630101 is a rear axle kit designed for GM 8.5-inch differentials. It features 30 splines, a 6-lug configuration, and a 33-inch length. The kit includes essential components for replacement, repair, or upgrade, such as wheel bearings, seals, differential cover gaskets, studs, and lug nuts. The wheel bearing outer diameter is 2.53 inches, and the wheel bolt pattern size is 6 x 5.50 inches. This kit is specifically designed for the rear of 1988-1991 Chevrolet and GMC K1500 models with torsion bar front springs and 4WD.

Fitment

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Specifications

BrandYukon Gear & Axle
Part NumberY001 ZA K630101

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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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