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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
Limited Slip Differential Unit
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 E7TE (225hp).
Quick reference
Verify the condition of used differentials as they may have varying degrees of wear.
Check for compatibility with non-OEM modifications that may affect fitment.
Always confirm mounting bracket differences if considering parts from earlier or later model years.
Context
The Limited Slip Differential Unit for the 1987 Ford Mustang, notably part number E7ZZ-4A400-A, is crucial for enhancing traction and performance in the rear axle. When considering an upgrade or replacement, it's important to inspect the unit for wear, such as clutch pack degradation or noise during operation. Models from 1987 to 1993 with the 5.0L V8 engine can utilize this part, but verify specific applications due to potential variations in older models. Installation requires proper alignment and the use of differential fluid; ensure to replace seals to prevent leaks. If sourcing from junkyards, look for units from similar model years and confirm compatibility using casting number E7TE-4A400-AB to avoid discrepancies in installation.
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Confirmed fitment
| Year | Make | Model | Engine | Confidence |
|---|---|---|---|---|
| 1987 | Ford | Mustang | 5L V8 Naturally Aspirated E7TE (225hp) | 80% |
Available parts

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