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GM 10½" Ring Gear, 14 Bolt
Straight Fins
Differential Cover

P/N 6060

PML GM 10½ Diff Cover, as-cast, straight fin PML GM 10½ Diff Cover, black powder coat, straight fin PML GM 10½ Diff Cover, polished, straight fin
As-cast finish
3/8-in bolts: Go To Cart
8mm bolts: Go To Cart
Black powder coating
3/8-in bolts: Go To Cart
8mm bolts: Go To Cart
Polished finish
3/8-in bolts:Go To Cart
8mm bolts:Go To Cart

Volume: 1.0 quart over stock, approximately

Dimensions: Click here for dimensions.

This differential cover fits heavy duty trucks and vans such as Chevy and GMC 2500 and 3500.

PML makes two different rear end covers for the GM 10½ differential: this one and part number 9369, a patterned fin cover.


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

Vehicles with towing packages may have limited space for a larger differential cover. Please check dimensions, clearance and fitment carefully before ordering.

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. PML offers the cover in both versions: P/N 6060-1 is for 3/8-inch bolts and P/N 6060-2 is for 8mm bolts.

Matching Front Cover for 4WD

For 4WD trucks and SUVs with the GM 8.5, 10 Bolt front end, PML offers a matching differential cover.

See the GM 8 1/2, Front 10 Bolt, Part Number 6077

The matching front cover is available in all finishes. Shown in black powder coated.

PML matching front cover

PML Differential Cover Compared to Stock

PML Differential Cover Part Number 6060 height compared to stock  PML Differential Cover Part Number 6060, compared to stock
Click on image to view larger.

These images show this PML differential cover compared to the stock cover.

This image compares the depth of both PML GM 10 1/2 inch 14 bolt rear differential covers and the stock cover. Click on image to view larger in a new tab or window.
PML GM 10 1/2 Differential Covers depth comparisons

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.