2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2024 GM 2500/3500HD 6.0L/6.6L Heavy-Duty Cast Aluminum Front Differential Cover Pacific Performance Engineering
2011-2024 GM 2500/3500HD 6.0L/6.6L Heavy-Duty Cast Aluminum Front Differential Cover Pacific Performance Engineering
2011-2024 GM 2500/3500HD 6.0L/6.6L Heavy-Duty Cast Aluminum Front Differential Cover Pacific Performance Engineering
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover
2011-2024 GM 2500/3500HD 6.0L/6.6L Heavy-Duty Cast Aluminum Front Differential Cover Pacific Performance Engineering
2011-2024 GM 2500/3500HD 6.0L/6.6L Heavy-Duty Cast Aluminum Front Differential Cover Pacific Performance Engineering
2011-2024 GM 2500/3500HD 6.0L/6.6L Heavy-Duty Cast Aluminum Front Differential Cover Pacific Performance Engineering

2011-2025 GM HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover

$334.00 In Stock Temporarily Out of Stock
Finish
43838505386227 45478405701875 45478405734643
PART NUMBER: 138041000 GTIN: 840171218497

OEM P/N REFERENCE:

Features

  • Premium A356.0-T6 heat-treated cast aluminum alloy – a high-strength, thermally conductive material
  • Precision-cast using permanent steel molds for a smooth, consistent finish and high dimensional accuracy
  • Increases oil capacity by 0.75 quart for higher thermal capacity
  • Half-inch external fins improve heat dissipation, lower differential fluid temperature, and increase impact resistance
  • Precision-placed internal windage scrapers prevent excessive churning, reducing heat generation, fluid aeration, and power loss
  • External fins and internal scrapers work together to form an ultra-strong Cross-Bracing structure
  • Cast-in gussets for additional differential housing flange support and increased rigidity
  • 304 Stainless steel fill plug with built-in high temperature rated neodymium magnet and Viton O-ring

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  • Description
  • Compatible Vehicles
  • Downloads

Heavy-Duty Cast Aluminum Front Differential Cover — GM 2500/3500HD 6.0L/6.6L

Excessive heat can degrade the protective qualities of differential fluid, leading to accelerated wear of gears and bearings. In limited-slip differentials, constant high temperatures can break down clutch packs and friction modifiers, resulting in reduced efficiency and compromised traction control.

Cast from high-grade A356.0-T6 aluminum alloy, the PPE differential cover adds .75 quart of fluid capacity and features half-inch external cooling fins for long-lasting heat management and performance.

Built-in windage scrapers inside the PPE cover ensure precise fluid distribution around the gears. By reducing excessive fluid churning, these scrapers lower heat buildup and minimize parasitic loss, promoting more efficient power transfer. Together with the vertical external fins, they form a strong cross-bracing structure that improves load distribution and enhances impact resistance.

The fill plug is precisely positioned at the factory level. Both the fill and drain plugs feature a powerful, high-temperature-rated neodymium magnet that captures ferrous particles for added protection.

OEM PN for reference: 20768577, 84756922

2011-2024 GM 2500/3500HD 6.0L/6.6L Heavy-Duty Cast Aluminum Front Differential Cover

Files
PPE PDF Download file
Install Guide
PPE PDF Download file
Drawings
PPE PDF Download file

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