aFe Power Differential Cover P/N:46-71110B
aFe Power 46-70022 rear differential cover for the 1986-1996 Ford F-250 and other vehicles closes the axle housing and helps cool the oil through built-in fins. This aFe Power differential cover holds the differential oil that lubricates the gears.
Oil weeping at the cover edge, or a cracked or dented cover, can mean the cover needs replacing. Before you replace it, rule out a leaking axle seal, a leaking pinion seal or loose cover bolts, because oil from any of them can end up in the same spot.
The 1986-1996 Ford F-250, the 1999-2025 Ford F-250 Super Duty and the 1999-2025 Ford F-350 Super Duty take this cover, along with other vehicles. The 1999-2025 Ford F-350 Super Duty takes one. If your truck is not named here, look it up in the Vehicles it fits section.
Fit and size
Build and materials
One differential cover with mounting hardware. Oil is not included.
Is this the Ford F-350 Super Duty differential cover for the 1999-2025 model years?
Yes. The aFe Power 46-70022 rear differential cover fits the 1999-2025 Ford F-350 Super Duty, and each truck takes one.
Does this differential cover come with hardware and oil?
Yes for mounting hardware, which is included. No for oil, which is not included and has to be bought separately.
Which Ford axle is the aFe Power 46-70022 made for?
The aFe Power 46-70022 is made for the Ford 10.5 axle and has 12 cover bolt holes.
How do the sight glass and calibration plug work on this cover?
The pre-installed sight glass lets you inspect the oil level quickly. The calibration plug is set to the factory oil level so the axle does not get overfilled.
Do the fins on this rear differential cover help cool the oil?
Yes. Built-in internal and external fins transfer heat from the oil to the outside air, and the cover has increased oil capacity.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.