1988–2021 GM AAM 10.5” 14-Bolt Heavy-Duty Cast Aluminum Rear Differential Cover
Las Vegas, NV — Pacific Performance Engineering (PPE) proudly presents its Heavy-Duty Cast Aluminum Rear Differential Cover for 1988-2021 GM vehicles with the American Axle Manufacturing (AAM) 10.5” rear axle. Built from high-grade A356-T6 heat-treated aluminum, this upgrade offers superior strength, thermal efficiency, and durability compared to stock steel differential covers. Key features include internal fluid scrapers for optimal lubrication, deep external cooling fins, and magnetic service plugs that capture metal particles to protect internal components. Combined with triangulated cast-in gussets, the cross-bracing structure created by the fluid scrapers and cooling fins delivers maximum strength and impact resistance. With premium materials, improved heat dissipation, and heavy-duty construction, this cover ensures reliable performance in any conditions.
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
- High temperature rated Neodymium magnet service plugs
- Increases oil capacity by 0.65 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
- Cast-in gussets for additional differential housing flange support and increased rigidity
- 304 Stainless steel service plugs with built-in high temperature rated neodymium magnets and Viton O-rings
Applications:
1988-2021 GM vehicles with the AAM 10.5” - 14 BoltWebsite Links
1988–2021 GM AAM 10.5” 14-Bolt Heavy-Duty Cast Aluminum Rear Differential Cover
