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OEM numbers, and community knowledge...
Dusting off the service manual...
💡 This page improves over time as the community adds casting photos and confirms fitment
Differential Carrier Assembly
This usually takes 5-15 seconds. We're pulling together fitment data,
OEM numbers, and community knowledge...
Dusting off the service manual...
💡 This page improves over time as the community adds casting photos and confirms fitment
Wiki page
5L V8 Naturally Aspirated Coyote V8 (435hp).
Quick reference
Verify specific axle configurations and ratios before purchase.
Check for any production year changes that might affect fitment.
Confirm if the vehicle had any aftermarket modifications that could alter part compatibility.
Context
The differential carrier assembly for the 2018 Ford Mustang with the 5.0L V8 Coyote engine is crucial for transferring power from the engine to the wheels. Common OEM part numbers include FR3Z-4004-A and FR3Z-4004-B, which cover various configurations of the rear axle. When sourcing this part from a junkyard, look for 2015-2020 Mustang models equipped with a 5.0L engine for the best fit. Inspect the assembly for signs of wear, such as cracks or leaks, and ensure the bearings are in good condition. Installation requires special tools for proper alignment and torque settings, so consult the service manual for detailed instructions. Remember to verify compatibility with any modifications or upgrades that may affect the differential setup.
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Confirmed fitment
| Year | Make | Model | Engine | Confidence |
|---|---|---|---|---|
| 2018 | Ford | Mustang | 5L V8 Naturally Aspirated Coyote V8 (435hp) | 80% |
Available parts

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