PPE develops a new rear differential cover for the GM (L5P) Duramax Diesel

Specially engineered to minimize friction and maximize lubrication. Keep your GM rear differential running cool and clean with an upgraded cover from PPE. Made from high-quality cast A356.0-T6 aluminum for strength and optimum heat dissipation.

Increased fluid capacity provides increased thermal stamina. This new cover is equipped with specially designed internal heat sinks and external cooling fins which increase the pan’s surface area helping dissipate heat. This keeps your differential oil running cooler, the oil will keep its viscosity which helps extend differential service life. 

To help keep fluid cleaner, PPE includes our exclusive fill plug featuring a high-power Neodymium magnet that will pull harmful ferrous metal particles right out of your oil before they have a chance to do damage. 

Increases oil capacity by 1.43 quarts
Compatible with both the 11.5” or 12” rear axle
Designed with specially engineered internal ribs to minimize friction and maximize lubrication
Heat-treated, cast A356.0-T6 aluminum for optimum heat dissipation
Adds additional strength to the gear housing
High-power Neodymium magnet equipped, billet 304 stainless steel fill plug
1/8-inch stainless steel NPT port for optional temperature probe
Available in Raw, Brushed, and Black powder coat finishes
Limited lifetime warranty

GM - 14 bolt – 11.5” & 12” Axle
2020 - 2021+ GM 6.6L Duramax 2500/3500 (L5P)
2020 - 2021+ GM 6.6L GAS 2500/3500

Part numbers:
138053000, 138053010, 138053020

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