Wehrli 01-04 Duramax LB7 Stage 2 High Flow Intake Bundle Kit - Candy Teal

If you're looking to get more out of your 2001-2004 Duramax LB7, this Stage 2 High Flow Intake Bundle Kit from Wehrli Custom Fabrication is designed to significantly increase airflow to your turbo. This comprehensive kit replaces restrictive factory components with larger diameter, smoother flowing aluminum piping, aiming to improve horsepower, torque, and throttle response while also helping to lower intake temperatures by drawing in colder air from behind the fender.

The kit features a 4-inch high-flow intake system with a removable air box lid for easy filter access and maintenance, complete with a dry filter and a hydrophobic pre-filter cover to help keep contaminants away from your MAF sensor, turbo, and engine. A key component is the high-flow 4-inch intake horn, which removes restrictions found in the stock setup to promote better turbo spool and top-end power, and it's designed to work with both OEM and upgraded IHI-style turbochargers. You also get a 3-inch Y-bridge and intercooler piping kit, constructed from mandrel-bent aluminum with smooth bends to improve air velocity and volume. This replaces the often problematic factory plastic parts with more durable silicone boots and stainless steel T-bolt clamps, which can handle higher pressures and temperatures, helping to prevent boost leaks.

This bundle also includes a Fuel Pressure Regulator Valve (FPRV) block-off kit to ensure proper clearance for larger diameter Y-bridge assemblies. The entire system is finished in a striking Candy Teal powder coat, offering a custom look that stands out. By bundling these components, you can save compared to purchasing them individually, making this a well-rounded upgrade for your LB7 Duramax.