Banks Ram-Air® Transmission Pan - GM Duramax 6.6L L5P Allison 10L1000 (2020-2026)

The Banks Ram-Air® Transmission Pan brings forced-air cooling to the heavy-duty Allison 10L1000 transmission in 2020-2026 GM Duramax 6.6L L5P trucks. Using technology from Banks's patented differential covers, it rejects more heat than stock, adds three quarts of fluid capacity, and uses a breakaway Ram-Air scoop with Banks FlowThru Fins® to keep fluid cooler for longer transmission life. U.S. Patent 12,313,156 B1.

Key features

• Ram-Air scoop provides forced-air cooling
• Adds 3 additional quarts of fluid capacity
• 134% more cooling surface area than stock
• 123% more heat-absorption surface area than stock
• Internal fins transfer heat through the cover into the external fins
• Breakaway Ram-Air scoop design prevents pan damage
• Internal geometry allows full fluid drainage
• 1/8 NPT port for auxiliary temp sensor

Technical specs

• External heat radiation fin count: 22
• Internal heat absorption fin count: 20
• External heat radiation surface area: 1005 in²
• Internal heat absorption surface area: 835 in²
• Fasteners: 16 x stainless steel M6 flange hex bolts
• Material: A380 aluminum die-cast with CNC-machined surfaces
• High-temp-resistant ferrite magnetic drain plug
• Adds 3.0 qts additional capacity (check OEM owner's manual)
• Banks recommends Amsoil ATF
• U.S. Patent 12,313,156 B1

Service parts

• Transmission pan gasket: 2020-2024 GM Part No. 24297922
• Transmission fluid filter: 2020-2024 GM Part No. TF938 or 24298004

Fitment

Fits 2020-2026 Chevrolet Silverado 2500/3500 and GMC Sierra 2500 HD/3500 HD with the 6.6L L5P Duramax diesel and the Allison 10L1000 transmission. CARB E.O. not required.

Installation

Installation manual and video from Banks.

Banks part 35148-B.