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Drivetrain› Differentials and Rear-End Components

USA Standard Gear

7.50/8.8-Inch 4-Lug Rear Axle

Name: 7.50/8.8-Inch 4-Lug Rear Axle
Brand: USA Standard Gear
SKU: ZA K630228

$247.38 $219.28 Save $28.10

SKU: ZA K630228

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Overview

The USA Standard Gear 7.50/8.8-Inch 4-Lug Rear Axle is a direct-fit replacement component designed for 1979-1983 Ford Mustang models. It features a 28-spline design and a length of 29-1/4 inches to restore rear-end strength and drivetrain functionality. This axle is constructed from premium-grade, heat-treated steel with a corrosion- and rust-resistant composition and a weather-tight structure for durability.

Show original supplier description

The USA Standard Gear 7.50/8.8-Inch 4-Lug Rear Axle is engineered as a durable replacement for 1979-1983 Ford Mustang models, aiming to restore rear-end strength and drivetrain functionality. This axle features a 28-spline design and measures 29-1/4 inches in length, serving as a direct-fit and bolt-on component. Crafted from premium-grade, heat-treated steel, the axle is manufactured in a state-of-the-art facility to provide an OE-like fitment and appearance. Its construction includes a corrosion- and rust-resistant finish and a weather-tight structure, ensuring longevity and reliable performance in various conditions. The kit includes all necessary components for a complete setup: wheel bearing, seal, studs, and lug nuts. This direct-fit axle is engineered specifically for all 1979-1983 Ford Mustang models.

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

Brand	USA Standard Gear
Part Number	ZA K630228
Category	Drivetrain

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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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