Here is how to install a PML differential cover on an 8.8 axle
Allen key set
Brake parts cleaner (non-chlorinated)
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.
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.