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GM 8 7/8" Ring Gear (Truck), 12 Bolt
Differential Cover

P/N 6058
(was P/N 10277)

PML GM Truck Diff Cover, as-cast PML GM Truck Diff Cover, black powder coat PML GM Truck Diff Cover, polished
As-cast finish
$195.00
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Black powder coating
$245.00
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Polished finish
$310.00
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Volume: 1.0 qt. over stock

Dimensions: Click here for dimensions. Depth inside is 4½ inches.

This differential cover fits GMC and Chevy trucks and SUVs with the GM 8 7/8" (8.875") ring gear 12 bolt differential. Typical applications include ½ and ¾ ton vehicles with 2 or 4 wheel drive made by Chevrolet and GMC from 1963 - 1991. These trucks and SUVs came with options for different differentials so please check before ordering. Some common applications for this rear end cover are:

  • C10 & K10, 1967-1976
  • C20 & K20, 1973-1976
  • Chevrolet Blazer, 1969 to 1976
  • GMC Jimmy, 1969 to 1976
  • Suburban 10/1500, 1973-1981
  • Suburban 20/2500, 1973-1991

Read about an install of this cover on a 1972 Chevrolet C-10 in Classic Trucks magazine.

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
  • Thick wall construction to add strength to differential housing
  • 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.