JBA 03-06 GM Truck 6.0L LS w/o EGR 1-5/8in Primary Raw 409SS Cat4Ward Header

JBA is well-known for making exhaust components that help your vehicle breathe easier and perform better. These Cat4Ward headers are a prime example, designed to significantly reduce restriction compared to your truck's stock exhaust manifolds. By improving how efficiently your engine expels exhaust gases, you can expect a noticeable increase in both power and fuel efficiency. This upgrade is built to handle the demands of daily driving, towing, and even spirited use.

Constructed from durable 409 stainless steel, these headers are built to last. The tubing is mandrel bent to maintain consistent diameter, which helps with smooth exhaust flow. JBA uses thick 3/8-inch flanges with oversized exhaust ports to ensure a solid seal and efficient gas transfer. A key feature is their proprietary Firecone collector design, which is developed using race-proven technology to maximize power and torque gains in the RPM range you'll use most often. The system also includes factory-style emission connections and high-quality hardware, aiming for a professional installation without leaks.

This header set is designed to fit a wide range of GM trucks and SUVs from 2003 to 2006, including popular models like the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade equipped with the 6.0L LS engine and without EGR. While installation can be involved, the included hardware and factory-style connections are intended to simplify the process. For optimal performance and a leak-free seal, always refer to the manufacturer's installation instructions.