ARH 2004-2006 Pontiac GTO Long Tube Headers & Catted or Non-Catted Connection Pipes

ARH long tube headers long system for the 2004 GTO features 304 stainless steel in 1 3/4" or 1-7/8" primaries, 3" merge collectors, and all the necessary hardware and gaskets for a bolt-on installation. The 2004 GTO American Racing Headers long system was designed to bolt-on to your factory axle-back or any aftermarket axle-back. A simple cut and clamp modification (but no welding) may be required.

connection pipes can be optioned with ARH severe duty 300-cell cats or G-Sport high-flow 400-cell cats (recommended for those making 650+ HP) or non-catted connection pipes.

Note: Use the product options button to select your primary size and if you want a catted or non-catted connection pipes

*See our primary size horsepower chart below if you are unsure of what size you may need.