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GM 8½" Ring Gear, 10 Bolt, Front Differential Cover

Part Number 6077

PML GM Corp Diff Cover, as-cast PML Corp 8¼ Diff Cover, black powder coat

No Image of a Polished Part Available

As-cast finish
$195.00
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Black powder coating
$250.00
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Polished finish
$325.00
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Volume: 0.5 qt. over stock, approximately

Dimensions: Click here to view the dimensions in a new tab or window. Check for clearance with wheels at the stops and at the limits of the suspension.

These 4WD trucks and SUVs typically have the GM 10 Bolt 8.5" ring gear front differential:

  • Blazer (full size), 1977 to 1991
  • C10 and K10, 1977 to 1988
  • C20 and K20, 1977 to 1991
  • C30 and K30, 1977 to 1991
  • Suburban, 1977 to 1991

Please check your vehicle before ordering to verify differential and clearance.

This cover features cast aluminum construction, fins, extra capacity and a fill/level check hole. The drain is on the carrier.

Matching rear differential covers are:

Installation on a Suburban 4WD

We were at the Off-Road Expo in Pomona, CA, and spotted this Suburban outfitted with our front and rear differential covers. The rear cover is a GM 10 1/2 inch ring gear, 14 Bolt, PML part number 6060.

PML GM 14 bolt rear cover on a Suburban Suburban with PML rear differential cover for GM 10 1/2, 14 bolts, installed   PML GM 14 bolt front cover on a Suburban PML GM 8 1/2 inch, 10 bolt front differential cover on a Suburban   Suburban 4WD Suburban 4WD
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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.