Project Box Hauler: PML Diff Cover

August 1st, 2010

BY: Kevin Wilson

Photos: Kevin Wilson

PML offers several different finish options for their Dana 80 cover. We opted for the black powdercoated version. It comes complete with stainless steel, hex-head mounting bolts for an easy and good looking install.

The Great Cover Up

One of the keys to keeping a differential alive is keeping it cool. Utilizing synthetic rear end gear oil helps, but nothing beats addition fluid capacity from an aftermarket rear end cover, which replaces the shallow, stamped steel factory unit. Ford Super Duty diesels are notorious for having factory diff covers with blistered paint on them, which indicates things inside are getting pretty hot.

Once the stock cover is removed, it is essential to thoroughly clean the housing surface prior to installation of the new PML cover.

A great looking, and budget-minded alternative to the factory diff cover is a cast aluminum, deep sump cover from PML. Offered in either an as-cast finish, black powder coated or polished, they offer greats looks and added fluid capacity for improved cooling, along with an added fill plug at the top and a drain plug at the bottom to make servicing your differential easy. We opted for this cool looking black powder coated Dana 80 cover from PML when buttoning up Project Box Hauler’s rear end.

A bead of quality silicone seals is all that is needed to seal the cover to the housing.

(800) 335-4345

The PML cover features a filler at the top as well as a drain plug. Once the rear end is full, the side plug can be re-installed. It is in the factory fill location so you can check the fill level easily.

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