Kooks 04 Pontiac GTO Base 1-7/8 x 3 Header & Catted GTO Conn Kit

Starting with 1-7/8 inch primary tubes and a 3 inch collector, this Kooks header and catted connection kit is built specifically for your 2004 Pontiac GTO with the LS1 5.7L engine. Kooks has been crafting high-performance exhaust systems for over 50 years, and this kit is a testament to that experience. They use T304 aircraft-quality stainless steel, which is a strong material that holds up well over time, even with the heat cycles exhaust components go through. This kit is designed to help your GTO breathe better, aiming for maximum power gains.

Every Kooks system is dyno and race tested to ensure it performs as expected. These headers and connection pipes are handcrafted in the USA, reflecting a commitment to quality manufacturing. The kit includes catted connection pipes, which help manage exhaust emissions while still allowing for improved flow compared to stock. Because these are designed for performance, they are not CARB approved and cannot be shipped to California.

This header and connection kit is a significant upgrade for your GTO's exhaust system. It's backed by a limited lifetime warranty to the original purchaser, giving you added confidence in your investment.