How To: Install A PML Differential Cover - Ranger-Forums - The Ultimate Ford Ranger Resource

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Old 11-09-2010
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How To: Install A PML Differential Cover

Here is how to install a PML differential cover on an 8.8 axle

Tools needed:
  • Socket set
  • Ratchet
  • Allen key set
  • Scraper
  • Flathead screwdriver
  • Drain pan

Parts neded:
  • PML cover
  • Black RTV
  • Brake parts cleaner (non-chlorinated)
  • Blue Loctite
  • 80w90 gear oil (4 quarts)
  • Limited slip additive (if truck is equipped with one)

*As you can see the axle was previously drained of fluid and was on jackstands, however the installation process is the same.


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This cover features raised fins for added cooling, as well as 0.6qt over stock fluid capacity. It also features an added magnetic drain plug, fill plug, and level check hole. There is also a small raised portion on the right side which can be drilled and tapped for a temperature sending unit.

The cover is available in black powercoated (as shown), polished, and as cast finishes. A 7.5 version is also available for those with that axle. For more information on them click the logo below.

Last edited by korey89; 11-09-2010 at 05:19 PM.
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Old 11-09-2010
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Originally Posted by Red_Ak_Ranger View Post
Hey Korey can you guesstimate the thickness of the new cover? For how strong it appears to be. And compared to stock?
From their website,
  • 3/16-inch thick wall construction to add strength to differential housing
  • 3/8-inch thick gasket flange will not bend when bolts are tightened

Last edited by 98liftedranger; 12-02-2011 at 10:01 AM.
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