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Ford Super 8.8, 12 Bolt Rear Differential Cover

For F-150, Mustang, 2015 and newer
PML Part Number 11145

PML Ford Super 8.8 Diff Cover For 2015, 2016, 2017 Ford TrucksPML 12 Bolt Ford Differential Cover, Cast Finish
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PML Ford Super 8.8 Diff Cover For 2015, 2016, 2017 Ford Trucks, black powder coat finishPML 12 Bolt Ford Differential Cover in Black Powder Coat
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Image of polish part not yet available.

As-cast finish
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Black powder coating
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Polished finish
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Volume: about 3/4 quart over stock

Dimensions: Click here for dimensions.

PML designed this cover for 2015, 2016, and 2017 Ford F-150 trucks with the new Ford 8.8 inch Super or "HD" rear differential. Some Mustangs also have this new differential and may be able to use this cover. Other Ford or Mercury vehicles may also be able to use this cover.

Some F-150 trucks have the 12 bolt Ford 9.75 (9 3/4) inch ring gear rear differential. See PML covers with straight fins and pattern fins for heavy duty rear axle covers for the 9.75 inch ring gear Ford differential.

Always check your truck to verify your differential and clearance.


  • Additional capacity: approximately 3/4 quart over stock
  • Fins for dissipating heat from fluid
  • Pads for using stock clips to keep lines routed above differential in place
  • Fill hole on side for easy addition of new fluid
  • Drain on bottom with magnetic drain plug included
  • Boss (unmachined) if needed for temperature sending unit
  • Standard PML top quality heavy duty sand cast aluminum construction

Level check is on the carrier. To fill, add fluid through fill hole on the side of the cover. Stop adding once fluid starts to dribble out level check hole.

Optional Machining for Temperature Sending Unit

This cover will also have an undrilled boss for a temperature sensor. It can be machined for a 1/8 NPT. If you want PML to drill and tap the boss, there is a $40 machining charge.

PML Differential Cover Compared to Stock

PML Differential Cover Part Number 11145 height compared to stock  PML Differential Cover Part Number 11145, compared to stock
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These images show this PML differential cover compared to the stock cover.

2016 Ford F-150 truck rear axle stock cover Stock F150 Cover     2017 Ford F-150 truck with PML rear axle cover installed PML Cover Installed on an F150
From left to right: Stock Cover on an F150, New PML Cover on an F150. Click on image to view larger.


Our thanks to those who have provided information and pictures of their trucks.

2015 Ford F150

Jared put this cover on his SEMA 2016 Show Truck. He tested the fit and then custom powder coated it. Truck is a 2015 Ford F150 5.0L Lariat.

2015 Ford F-150 truck    PML differential cover on 2015 Ford F-150 truck, custom powder coat    PML differential cover on 2015 Ford F-150 truck, straight view
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2016 Ford F150

Warren installed this cover on his 2016 Ford F150 5.0L 4x4 truck. He reported that "removing the spare tire made access to the diff cover much easier, as depicted in the photos. The only time consuming issue was removing an excessive amount of thread locker and silicone material from the bolt holes Ford had applied. Again all of the supplied information, hardware and the PML diff cover it's self installed perfectly." Our thanks to Warren his comments and pictures.

2016 Ford F-150  2016 Ford F-150 stock rear diff cover  2016 Ford F-150 stock rear diff cover, spare tire removed  2016 Ford F-150 PML rear diff cover installed
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2017 Ford F150

CGS Motorsports installed this new PML rear differential cover on their 2017 Ford F150. This truck was in the Ford booth at the SEMA 2016 Show.

2017 Ford F-150 truck at SEMA show    2017 Ford F-150 with PML cover installed    2017 Ford F-150 with PML cover installed
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For a larger picture, please click one of the above images. A separate window will open showing a bigger picture. (The larger pictures take a minute to display.)

PML Differential Cover Features:

  • Increased oil capacity for cooler temperatures
  • Sand-cast aluminum with raised fins
  • 3/16-inch thick wall construction to add strength to differential housing
  • 3/8-inch thick gasket flange will not bend when bolts are tightened
  • Machined gasket surface for a secure seal using RTV or factory reusable gasket
  • Oil changes without removing the cover
  • All hardware provided, including magnetic drain plug

Learn more about finishes and construction of PML parts.