USA Standard Gear

Ford 9-Inch 31 Spline Rear Axle

$163.89

SKU: ZA F900001

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

Description

The USA Standard Axle is a direct replacement axle engineered for 1977 and newer Ford Bronco and F-150 vehicles utilizing a Ford 9-inch differential. This axle is specified with 31 splines and a 32-inch length, featuring a 5-lug bolt pattern for compatibility with common wheel setups. The 31-spline count and 32-inch length are critical dimensions for proper fitment within the Ford 9-inch axle housing and for connection to compatible differential gears and brake assemblies. Ensure this axle is compatible with your specific year, model, and drivetrain configuration. Proper installation, including correct gear meshing and bearing preloads, is essential for optimal performance and longevity. USA Standard Gear is known for producing quality drivetrain components, offering a reliable alternative to original equipment parts.

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 F900001
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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