Drivetrain› Differentials and Rear-End Components

USA Standard Gear

Rear Axle Kit, Driver-Side, 31 Spline, 33.75 Inch

$241.86

SKU: ZA K630327

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INSTALL DIFFICULTY
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Moderate — 2–4 hours

Overview

The USA Standard Gear ZA K630327 is a rear axle kit designed for Ford 8.8-inch differentials. It features 31 splines and advanced heat treatment for enhanced strength and durability.

This axle kit includes a wheel bearing, seal, differential cover gasket, studs, and lug nuts. It is specifically designed for the driver's side rear position with a 6-lug configuration and has a length of 33.75 inches.
Show original supplier description
The USA Standard Gear ZA K630327 is a rear axle kit engineered for Ford 8.8-inch differentials, offering a direct fit for specific F-150 models. This component is constructed with advanced heat treatment to ensure superior strength and a longer service life, meeting or exceeding OE quality standards. This comprehensive kit includes all necessary components for installation, such as a wheel bearing, seal, differential cover gasket, studs, and lug nuts. The axle shaft itself measures 33.75 inches in length and is designed for the rear driver's side (RH) position, featuring 31 splines and a 6-lug bolt pattern. This USA Standard Gear axle is specifically designed to fit the 2009-2014 Ford F-150. The 8.8-inch differential compatibility ensures proper integration with the existing axle housing.

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

BrandUSA Standard Gear
Part NumberZA K630327
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

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