aFe Pro Series Rear Diff Cover (46-71120B) improves oil cooling and capacity for 2014–2019 GM 1500 trucks with AAM 9.5/9.76 axles. Built from cast aluminum and finished in a black powder coat with machined fins, this differential cover increases oil capacity and delivers enhanced heat dissipation. Its integrated internal and external fins transfer heat efficiently, while a magnetic drain plug and deep reach fill plug help protect gears by capturing metal particles. A factory-calibrated plug ensures proper oil levels, and the pre-installed sight glass allows for quick inspections without removing the cover.
Key Features :
Designed for 2014–2019 GM Silverado and Sierra 1500 with AAM 9.5/9.76 rear axles
Durable cast aluminum construction with black powder coat finish
Machined fins and internal/external fin design enhance cooling
Magnetic drain and fill plugs collect debris for gear protection
Factory-set calibration plug prevents overfilling
Oil level sight glass allows easy visual inspections
Increased oil capacity extends performance longevity
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