3.5-Inch Turbo Intake Horn

The Wehrli Custom Fabrication WCF100342 is a 3.5-inch turbo intake horn specifically engineered for 2001-2004 LB7 Duramax engines. This component serves as a high-flow replacement for the restrictive factory turbo inlet, aiming to improve airflow and performance. The intake horn is compatible with both the factory IHI Turbo and upgraded drop-in IHI turbos, as well as OEM and aftermarket intake systems. It is constructed with a focus on enhancing performance, offering quicker spool-up times and increased horsepower. The package includes the intake horn itself, stainless steel hardware, and a gasket for installation. This upgrade is designed to provide tangible benefits, with claims of 10-15 HP gains for max-effort tuned trucks and up to 20 HP improvements for applications utilizing upgraded turbochargers. Notably, no tuning is required for installation, simplifying the upgrade process. The product is available in various powder-coated finishes to match aesthetic preferences.