aFe · New
aFe Power Pro Series Rear Differential Cover Black w/ Machined Fins 99-13 GM Trucks (GM 9.5-14)
MPN 46-70372 · Store SKU afe46-70372
Supplier stock checked 11/7/2026, 6:42:55 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
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Product details
aFe Power's new rear differential cover brings performance engineering to the protection of your axle's differential. This differential cover is constructed out of durable A356-T6 cast aluminum with reinforcing ribs for maximum strength. Mounting hardware is included for a hassle-free installation. An oil level sight glass and calibration plug set to the factory level prevents overfilling of the differential. A magnetic drain plug and a deep reach magnetic fill plug are provided for maximum protection. This cover is finished in black powder-coating with machined fins for a distinctive look. 4 Quart Gear Oil Capacity: This cover has about a 4 quart gear oil capacity at the factory fill level, factory cover holds about 3 quarts. Built-in External Fins: Built-in external fins transfer heat from the fluid to the outside air for maximum cooling. Magnetic Drain/Fill Plug: This system incorporates a magnetic drain and deep reach fill plug that captures loose particles for maximum rear-end protection. Oil Level Sight Glass: Large oil level sight glass with 1/8'' NPT calibration plug set to the factory fluid level to eliminate overfilling. When it comes to engineering for power, performance, protection and value, aFe Power is the only choice. Pro Series Rear Differential Cover Black w/ Machined Fins GM Trucks 99-13 Pro Series Rear Differential Cover Black w/ Machined Fins
Manufacturer fitment & guides
Check 46-70372 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y