PPE 138053020 Heavy Duty Rear Differential Cover with Black Finish for 2020-2022 Chevy/GMC 6.6L Duramax L5P Equipped With 14-Bolt 11.5” & 12” Axle

Part #: 138053020
Now $314.99
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Installation Instructions

PPE Differential Covers 138053020 Details

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.

Key Features

  • 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
  • Durable, heat-treated cast A356.0-T6 aluminum for optimum heat dissipation
  • Significant reduction in differential fluid temperatures
  • 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
  • Limited lifetime warranty
  • GM OEM Part Number: 84757353


This product can expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
California Proposition 65 Notice
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