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The Wehrli Custom Fabrication 4" High Flow Intake Horn for 2001–2004 Duramax LB7 (6.6L) replaces the restrictive OEM turbo inlet to increase airflow and improve throttle response. It bolts on to stock turbochargers and compatible drop-in aftermarket IHI-style turbos, flowing significantly more than stock and aiding quicker spool. Constructed from CNC machined cast aluminum with an O-ring turbo seal and available in custom powder coat, it fits applications using a 4" boot connection.
Wehrli 01-04 Duramax LB7 4in High Flow Intake Horn - Illusion Purple
