JBA 01-03 Gm Truck 8.1L BBC w/o EGR/A.I.R. 1-3/4in Primary Raw 409SS Cat4Ward Header

If you're looking to get more power and better breathing out of your 2001-2003 GM truck with the big 8.1L BBC engine, these JBA Cat4Ward headers are a solid choice. They replace the restrictive factory exhaust manifolds with a less restrictive design, which can make a noticeable difference in how your engine performs, especially when towing or hauling heavy loads. These headers are built to handle the demands of daily driving and more strenuous use.

JBA constructs these headers from durable 409 stainless steel tubing, and the flanges are a beefy 3/8" thick with oversized exhaust ports to ensure a good seal and smooth flow. The proprietary Firecone collector design is something JBA has refined over time, aiming to maximize power and torque gains in the RPM range you'll use most often. They also include factory-style emission connections, so you can retain your emissions equipment, and come with high-quality hardware to help ensure a leak-free installation. The extra-thick collector domes add to the overall robustness of the header.

This header set is designed to fit a range of GM trucks from 2001 to 2003, including models like the Chevrolet Silverado 2500 HD and GMC Sierra 3500. When installing, always refer to the manufacturer's instructions for proper torque specifications and any necessary sealing compounds to ensure a long-lasting, leak-free connection.