2020-2022 GM 6.6L Duramax 11.5"/12"-14 Heavy-Duty Cast Aluminum Rear Differential Cover
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.
GM OEM Part Number: 84757353
- High-grade A356.0-T6 heat treated cast aluminum alloy
- 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
Installation Guide: Rear Differential Cover – Heavy-Duty Cast Aluminum - 2020 - current GM 6.6L 2500-3500