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Wehrli Stage 2 4" Intake Kit with air box for 2001–2004 Duramax LB7 improves airflow with large-diameter tubing and adds a High Flow 4" turbo intake horn to reduce restrictions for better turbo spool and top-end power. The kit includes a dry air filter with hydrophobic pre-filter cover, silicone boot, stainless T-bolt clamps and installation hardware. It is a bolt-on upgrade that installs with basic tools and requires no tuning.
Wehrli 01-04 Duramax LB7 4in Intake Kit with Air Box Stage 2 - Gloss Black
