Zumbrota Drivetrain

9.25-inch Rear Axle Kit, 31 Spline

$459.89

SKU: ZA K630811

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

Description

The Zumbrota Drivetrain ZA K630811 is a comprehensive rear axle kit engineered for specific Dodge and RAM applications. This kit is designed for vehicles equipped with a 9.25-inch Chrysler differential and features 31 spline count, a length of 33.89 inches, and 9/16-inch studs. Manufactured by USA Standard Gear, this axle is built using advanced heat-treating technologies to provide enhanced strength and durability, ensuring it meets or exceeds original equipment quality. This kit includes all the necessary components for a complete replacement or upgrade, featuring a wheel bearing, seal, differential cover gasket, studs, and lug nuts. The axle's design adheres to a ZF 12 Bolt Rear, 5 Lug, Right Hand (RH) configuration, making it suitable for the specified Dodge and RAM models. The USA Standard Gear axle is crafted from advanced alloys and subjected to rigorous heat-treating processes. The inclusion of all necessary hardware simplifies the installation process for technicians and DIYers alike.

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 K630811
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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