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GM 10½" Ring Gear
14 Bolt
Differential Covers

Part Numbers
6060, 9369

PML GM 10½ Diff Cover, as-cast, straight fin PML GM 10½ Diff Cover, as-cast, patterned fin

As-Cast Finish

PML GM 10½ Diff Cover, black powder coat, straight fin PML GM 10½ Diff Cover, black powder coat, patterned fin

Black powder coating

PML GM 10½ Diff Cover, polished, straight fin PML GM 10½ Diff Cover, polished, patterned fin

Polished finish

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Volume: 1.0 quart over stock, approximately

PML makes two different rear end covers for the GM 10½ rear end. Part Number 6060 has straight fins and a taller profile. Part Number 9369 has patterned fins is about 4.4 inches tall.

Please check and order the correct mounting bolt thread diameter. These differentials were made with 3/8-inch (.375 inch) and 8mm (.315 inch) bolts. After clicking on the BUY NOW button, you will be able to select the bolt size for that particular cover.

These differential covers fit heavy duty trucks and vans such as Chevy and GMC 2500 and 3500.


Typical applications include the following. Be aware that for each model and year there may be more than one rear axle possible so please check before ordering. See also GM 14 bolt 9½ and AAM 14 bolt 11½.

¾ Ton Truck, 1973 to Current

  • C20 & K20
  • C2500 & K2500
  • Silverado 2500 & 2500HD
  • Sierra 2500 & 2500HD

1 Ton Truck, 1973 to Current

  • C30 & K30
  • C3500 & K3500
  • Silverado 3500 & Sierra 3500

¾Ton Van, 1973 to Current:

  • Vandura
  • Express
  • Savana
  • G20
  • G2500

Vehicle configurations vary. Please check dimensions, clearance and fitment carefully before ordering. There is a restocking fee for returns.

Vehicles with towing packages may have limited space for a larger differential cover. Also, the spare tire may be close to the cover. Some folks have increased the space by tying the spare tire back.

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.