Adds power, sharpens turbo response, and improves fuel economy. Provides a strong induction note. With 2020 and up Duramax engines, GM has further tightened the allowable range for induction tuning. With a Big-Ass filter, huge induction tube and a unique bellowed silicone coupler to allow for engine movement while tapering down to increase air density, your 6.6L engine will breathe easy and cleanly. Its enclosed airbox design keeps power-robbing heat away and attaches to the OEM hood and front ram air scoops for even better performance at speed on the highway. An extra side inlet opens up to the wheel well for fresh air and a strong induction note sound. Key Features: Includes brand new Patented Banks Air Mass Control Module. "Big Ass Filter" Extends service life and requires fewer cleanings. Enclosed housing keeps out hot, power-robbing engine air. Unique EPDM elbow with exclusive bellows for engine movement. Oversized airbox increases cool air volume around filter. Massive two piece XLPE airbox for easy servicing. Connects to OEM hood and forward ram air scoops. More audible and aggressive induction note. No Check Engine Light. US Patent #11,193,441

Features

• Adds power, sharpens turbo response, and improves fuel economy. 58% air mass flow gain over stock.

Part number: 42266-D (42266D)