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The Wehrli Stage 2 4" intake kit for 2004.5–2005 Chevrolet Duramax LLY replaces the restrictive factory parts with a fabricated aluminum 4" pipe and air box enclosure with dry filter and pre-filter. Smooth bends and large-diameter piping increase airflow to the turbo for better horsepower, torque and throttle response while drawing cool air from the fender. Hardware includes silicone boot, stainless t-bolt clamps and a removable lid for inspection and maintenance.
Wehrli 2004.5-05 Chevrolet Duramax LLY 4in. Stage 2 Intake Kit - Gun Metal
