Zumbrota Drivetrain

GM 12-Bolt Differential Cover Gasket Kit

$170.89

SKU: ZA K630128

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Zumbrota Drivetrain rear axle kit, bearing the USA Standard Gear brand, is specifically engineered to fit GM 12-bolt truck differentials. This comprehensive kit provides the essential components for a rear axle assembly, ensuring proper function and durability. Key specifications for this rear axle kit include 30 splines and a 5 x 5 inch bolt pattern, compatible with rear axle applications. The axle shaft itself measures 31.4375 inches (31-7/16 inches) in length, with a wheel bearing featuring a 2.53 inch outside diameter. Included in this kit are a new wheel bearing, seals, a differential cover gasket, studs, and lug nuts, offering a complete solution for replacement or upgrade needs. The product details also mention a Prop 65 warning for California residents.

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

BrandZumbrota Drivetrain
Part NumberZA K630128
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.

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