2004-2006 Pontiac GTO Downpipe & Header Exhaust
2004-2006 Pontiac GTO Downpipe & Header Exhaust
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- Ships direct from the brand or supplier
- Tracking emailed when it ships
- Free fitment check before you order
Listed for: 2004–2006 Pontiac GTO Downpipe & Header ExhaustFitment notes & questions
COMPATIBILITY: 2004-2006 Pontiac GTO
SURFACE FINISH: Brushed Silver
MATERIAL: T-304 Stainless Steel
TYPE: Catless Downpipe & Long Tube Header
DIAMETER: 3 Inches
FEATURES:
Direct bolt-on design for 2004–2006 Pontiac GTO LS1/LS2 engines
3" mandrel-bent stainless steel piping for maximum exhaust flow and durability
Long tube header design improves scavenging and reduces backpressure for better performance
Catless downpipes eliminate restrictive factory catalytic converters for increased horsepower and aggressive sound
Upgrade your Pontiac GTO’s exhaust performance with this high-flow 3" long tube header and catless downpipe combo, designed specifically for the 2004–2006 LS1 and LS2 models. The long tube headers are constructed from high-grade stainless steel with CNC-machined flanges and smooth mandrel bends to maximize exhaust flow and reduce backpressure. Paired with the 3" catless downpipes, this setup eliminates the restrictive factory catalytic converters for increased horsepower, torque, and a more aggressive exhaust note. Designed for off-road and track use, this system is ideal for performance builds looking to unlock the full potential of the LS powerplant.
- Due to California Vehicle Code Section 27156, we are not able to ship this item to any CA Address ( Order will be Cancelled for ALL CA Address )
- This Item is Designed for Off-Road Use ONLY - Might Cause a CEL Check Engine Light.
Professional Installation is HIGHLY Recommended!

Exhaust manifold for the Pontiac GTO Downpipe & Header Exhaust: what to know
Cracked manifolds and broken studs cause ticking exhaust leaks, often worst when the engine is cold.
Fitment notes
- Listed for: 2004–2006 Pontiac GTO Downpipe & Header Exhaust.
- Model years: 2004–2006. Parts can change mid-generation, so match the exact year.
- Specs, lead time and warranty come from the manufacturer and supplier and can change. The details above this guide are the latest we have.
Not sure it fits? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentWhat else to plan for
- Exhaust manifold gaskets. Always new.
- Studs and nuts. Old studs often break on removal.
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