WCFAB 2020-2023 L5P Duramax 4" Intake Kit w/ Air Box Stage 2Powdercoat colors can be found here! High flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on the 2020 2022 L5P Duramax for improved engine performance. Increases air flow to turbo producing improved horsepower and torque, quicker throttle response, and cooler intake temperatures by drawing cold air through the hood Ram Air duct and inner fender. All aluminum