Drivetrain› Differentials and Rear-End Components

USA Standard Gear

Ford 8.8 Rear Axle Kit, 31 Spline

$244.83

SKU: ZA K630203

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Non-Returnable Item
INSTALL DIFFICULTY
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Moderate — 2–4 hours

Overview

The USA Standard Gear rear axle kit is designed for the Ford 8.8 in. differential. It features 31 splines and a length of 31.0625 inches, with a .750 inch cross-pin shaft diameter. This kit includes a wheel bearing, seal, differential cover gasket, studs, and lug nuts.
Show original supplier description
The USA Standard Gear rear axle kit is engineered to provide a strong, durable replacement or upgrade for your Ford 8.8 in. differential. Utilizing advanced alloys and heat-treating technologies, these axles are built to meet or exceed Original Equipment (OE) quality standards, ensuring reliable performance and longevity. This specific kit is designed for Ford 8.8 in. differentials with 31 splines and features a right-hand axle shaft measuring 31.0625 inches in length, with a .750 inch cross-pin shaft diameter. The comprehensive kit includes all necessary components for installation, such as a wheel bearing, seal, differential cover gasket, studs, and lug nuts, making it a convenient all-in-one solution. Specifically designed for direct fitment, this axle shaft kit is compatible with 1983-1986 Ford Bronco and 1983-1986 Ford F-150 models. USA Standard Gear replacement axles are easy to install and are heat-treated to enhance strength, providing years of dependable service for your vehicle.

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 K630203
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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