Back differential?

2004 FORD F-150
220,000 MILES • 5.4L • V8 • 4WD • AUTOMATIC
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JOHNSON FRANCIS
Hello, I have a question about my differential. How can I tell if it's limited-slip, and what are the dimensions? My truck is a 2004 Ford F150 Lariat 4WD Supercab.
Jul 28, 2025 at 4:25 PM
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STEVE W.
  • ✓ASE Certified Mechanic
  • 15,171 POSTS
  • ASE Certified Mechanic
The differential should have a tag on the rear cover, it that will tell you the gear ratio and if it has a locking differential. A dealer can run the VIN and get the as built data as well.
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Jul 28, 2025 at 8:49 PM
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