- Flows 40% Better than Stock
- True 4" Inlet Turbo Intake with smooth flowing transition to turbo compressor cover for optimized airflow and drivability
- Precision CNC Machined Cast Aluminum Construction
- Compatible with stock and OEM-style aftermarket drop in turbochargers with larger compressor wheels
- Bolt On Upgrade, No Tuning Required. Works with stock trucks, no other modifications or upgrades necessary!
- O-Ring Seal at Face of Turbocharger
- Includes Mounting Hardware
- Custom Powder Coat Finish
- Made in USA
3 1/2" Turbo Intake Horn for 2001-2004 LB7 Duramax. Compatible with factory IHI Turbo or upgraded drop in IHI Turbos and OEM or aftermarket intakes. Great upgrade offering quicker spool up and more HP! Max-effort tuned trucks can see 10-15HP gains while applications with upgraded turbochargers can experience as much as 20HP improvements.