Banks 42266 Ram-Air Cold Air Intake for 20-23 Chevy/GMC 2500/3500 Duramax 6.6L

Vehicle Fitment

• 2020-2023 Chevrolet Silverado 2500 HD (All Trims, 6.6L Duramax L5P Diesel)
• 2020-2023 Chevrolet Silverado 3500 HD (All Trims, 6.6L Duramax L5P Diesel)
• 2020-2023 GMC Sierra 2500 HD (All Trims, 6.6L Duramax L5P Diesel)
• 2020-2023 GMC Sierra 3500 HD (All Trims, 6.6L Duramax L5P Diesel)

Fitment Notes

• 6.6L Duramax L5P diesel only -- does not fit 6.6L L8T gas V8
• Does not fit 2024-2025 models
• Oiled filter version -- dry filter version is Banks 42266-D
• Replacement filter: Banks 41829 (oiled) or Banks 41829-D (dry)
• No check engine light -- patented Air Mass Control Module maintains ECM compliance

Features

• Patented Banks Air Mass Control Module -- bypasses GM's ECM airflow restrictions (US Patent #11,193,441)
• 58% gain in Mass Air Flow over stock system
• Oversized "Big-Ass" oiled filter -- greater dust capacity, longer service intervals
• Enclosed two-piece XLPE airbox -- keeps out hot engine bay air
• Connects to OEM hood scoop and forward ram-air duct for added density at speed
• Side fender inlet for additional fresh air and aggressive induction note
• EPDM elbow with exclusive bellows -- allows engine movement without airflow loss
• Banks SuperTube -- larger than stock and all competitors
• Improves throttle response, turbo spool-up, and fuel economy
• 5-year limited warranty

Specifications

• Airbox material: Cross-Linked Polyethylene (XLPE)
• Elbow material: EPDM synthetic rubber
• Filter type: Oiled cotton gauze
• Filter outlet area: 51 in²
• MAF gain over stock: 58%
• Weight: 12 lbs
• Package dimensions: 20" W x 18" H x 13" L
• Warranty: 5-year limited
• Patent: US #11,193,441

Included Components

• 1x Two-piece XLPE enclosed airbox
• 1x Banks SuperTube intake tube
• 1x Oiled "Big-Ass" filter element
• 1x EPDM elbow with exclusive bellows
• 1x Patented Air Mass Control Module
• All required hardware and installation instructions

Product Description

The Banks 42266 Ram-Air is a complete cold air intake system for the 2020-2023 Chevy/GMC 2500/3500 6.6L Duramax L5P. The standout feature is Banks' patented Air Mass Control Module -- an electronic device that allows the intake to flow beyond GM's tightly restricted ECM airflow limits without triggering a check engine light. No other aftermarket intake for this platform achieves this, resulting in a 58% Mass Air Flow gain over stock that competitors simply cannot match.

The two-piece XLPE airbox connects to the OEM hood scoop and forward ram-air duct for increased air density at highway speeds, while a side fender inlet draws in additional cool air away from engine heat. The EPDM elbow with exclusive bellows accommodates engine movement without the turbulence drag of factory-style bellows. The oversized oiled filter features a 51 in² outlet -- more than twice the flow area of competing filters -- and requires fewer cleanings between service intervals. Backed by Banks' 5-year limited warranty. Does not fit 2024-2025 models.