Wehrli Custom Fab Stage 2 4" intake kit for 2020–2025 Duramax L5P 6.6L (Chevrolet Silverado / GMC Sierra 2500/3500 HD) replaces restrictive factory plastic parts with high‑flow fabricated aluminum piping and an air box with dry filter. The kit increases airflow to the turbo for improved horsepower, torque, quicker throttle response and cooler intake temps by drawing cold air through the hood ram duct and inner fender.
Wehrli 20-24 Chevrolet 6.6L LP5 Duramax 4in Intake Kit Stage 2 - Red