Drivetrain› Differentials and Rear-End Components

Ford

8.8 Posi Unit Differential 28 Spline

$319.99

SKU: F5AW-BA

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Special Order
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INSTALL DIFFICULTY
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Moderate — 2–4 hours

Overview

The Ford F5AW-BA is a used posi unit differential for the 8.8 rear end. It has a spline count of 28.

This differential is listed as being in good working order from a 1987-2004 Ford Mustang.
Show original supplier description
The Ford F5AW-BA is a used posi unit differential designed for the 8.8-inch rear end, featuring a 28-spline count. It is explicitly stated to be in good working order and was sourced from a 1987-2004 Ford Mustang. This component is intended for use in Ford Mustang models from 1987 through 2004. The product page also indicates compatibility with various other Ford and Lincoln models, including specific years and trims of F-150 trucks, Broncos, Explorers, and Continentals, suggesting a broad application within the Ford ecosystem. However, it is crucial to verify specific fitment for any vehicle outside the primary Mustang application.

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.

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Specifications

BrandFord
Part NumberF5AW-BA
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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