PPE 138053000 11.5in/12 inch - 14 Heavy Duty Cast Aluminum Rear Diff Cover - Raw | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features:

• High-quality A356.0-T6 heat treated cast aluminum alloy
• Increases oil capacity by 1.43 quarts
• Compatible with both the 11.5” or 12” rear axle
• Designed with specially engineered internal ribs
• Optimum heat dissipation
• Significant reduction in differential fluid temperatures
• Adds additional strength to the gear housing
• High-power Neodymium magnet drain plug
• 1/8-inch stainless steel NPT port for exceptional temperature probe
• Limited lifetime warranty

Adds Strength and Enhances Cooling Capacity

PPE designed their Heavy-Duty Cast Aluminum Rear Diff Cover to add strength and improve cooling capabilities. By constructing their diff cover with high grade A356.0-T6 aluminum, they not only improve the strength over the OEM cover, but also the heat dissipation. Additionally, the increased fluid capacity offered by PPE's diff cover allows for greater thermal stamina. Designed with internal heat sinks and external cooling fins increases the covers surface area which also aids in dissipating heat. A cooler running differential means a longer differential service life, safeguarding it from premature wear and tear.

Exclusive Magnetic Drain Plug Safeguards Differential

PPE further enhances their Rear Diff Cover by adding their exclusive magnetic drain plug. Their magnetic drainplug acts as a crucial safeguard from metallic shards that are common occurrences in differentials. These shards can wreak havoc on the differential internals and lead to an expensive repair bill. That's where the metallic drain plug comes in, it catches these metallic shards before they have a chance to do any damage. PPE's Heavy Duty Cast Aluminum Rear Diff Cover Raw is the ultimate upgrade for your differentials providing cooler oil, stronger materials, and a magnetic drain plug.

Fits: 2020, 2021, 2022, 2023, 2024, 2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Built for 2020–2025 GM Silverado/Sierra 2500HD and 3500HD 6.6L Duramax, confirm fit before purchase.
• Adds 1.43 quarts of extra oil capacity for better cooling and thermal stability.
• Internal ribs and external fins improve lubrication and heat dissipation.
• Helps lower differential fluid temps, extending service life.
• Stronger than the stock cover, adding extra housing support.
• Magnetic drain plug captures metal particles to protect gears and bearings.
• Includes a 1/8-inch NPT port for an optional temp sensor.
• Constructed from heat-treated A356.0-T6 aluminum for long-lasting durability.
• Limited lifetime warranty included for peace of mind.

Installation Instructions