PPE HEAVY-DUTY CAST ALUMINUM REAR DIFFERENTIAL COVER (FOR DANA M300) - BLACK 338051820 | 2017-2025 6.7L Powerstroke

The PPE 338051820 Black Heavy-Duty Cast Aluminum Rear Differential Cover enhances both performance and style for your Ford F-250, F-350, F-450, or F-550 6.7L Powerstroke. Extreme heat can degrade differential fluid, leading to faster wear on gears and bearings. In limited-slip differentials, high temperatures can break down friction modifiers and clutch packs, reducing efficiency and traction control.

This PPE differential cover is cast from high-grade A356.0-T6 aluminum alloy and increases fluid capacity by 0.8 quarts. The cover features half-inch external cooling fins for superior heat management and built-in internal windage scrapers that ensure consistent fluid circulation around gears. These design elements reduce heat buildup, minimize parasitic losses, and promote efficient power transfer. The vertical fins and scrapers also form a cross-bracing structure that increases load distribution and impact resistance. The fill and drain plugs are fitted with high-temperature-rated neodymium magnets to capture ferrous particles for added protection.

Features

• Increases oil capacity by 0.8 quarts for higher thermal capacity
• Cast-in gussets for additional differential housing support & rigidity
• High-strength, thermally conductive A356.0-T6 heat-treated cast aluminum alloy
• External fins & internal scrapers form an ultra-strong cross-bracing structure
• Precision-cast using permanent steel molds for smooth, consistent finish and dimensional accuracy
• 304 Stainless Steel service plugs with built-in high-temp neodymium magnets & quality O-rings
• Half-inch external fins improve heat dissipation, lower differential fluid temperature & increase impact resistance
• Precision-placed internal windage scrapers reduce fluid churning, heat generation, aeration, and power loss
• Limited Lifetime Warranty

Application Notes

Ensure you order the correct differential cover for your application. The diff covers on DANA M275, M300, and M315 axles look similar, all with 14 bolts. Verify ring gear sizing before ordering.