Description
Designed specifically for the 2004 Pontiac GTO with LS1 5.7L engine, the Kooks Headers and Exhaust Header and Connection Kit offers high-performance components crafted for maximum power and durability. Featuring 1-7/8 inch diameter stainless steel long tube headers, this kit enhances exhaust flow, contributing to improved horsepower and torque for street and race applications. The kit also includes 3 inch x 2-1/2 inch stainless steel catted connection pipes, designed to seamlessly connect with OEM exhaust systems while maintaining optimal exhaust flow and emissions compliance. All components are manufactured in the USA using T304 aircraft-quality stainless steel, ensuring longevity, resistance to corrosion, and a professional-grade finish. Kooks prides itself on over 50 years of performance expertise, with products that are dyno and race tested to deliver maximum performance benefits for enthusiasts seeking to enhance their vehicle’s power output. The headers and connection kit are backed by a limited lifetime warranty for the original purchaser, reflecting Kooks’ confidence in product quality and craftsmanship. The kit complies with EPA standards, though it is not CARB-approved, and requires acknowledgment of CARB regulations prior to installation. The set arrives in two boxes, carefully packaged for protection during shipping, and is suitable for custom or professional installation. Whether for street performance, drag racing, or off-road adventures, this kit provides a reliable upgrade to your GTO’s exhaust system, ensuring a significant boost in engine efficiency and sound quality. Maintain your vehicle’s high standards with a product that combines American manufacturing excellence with race-proven performance benefits.
Features:
- Designed specifically for 2004 Pontiac GTO with LS1 5.7L engine
- Includes 1-7/8 inch stainless steel long tube headers for improved exhaust flow
- s 3 inch x 2-1/2 inch stainless steel catted connection pipes for OEM compatibility
- Manufactured in the USA using T304 aircraft-quality stainless steel for durability and corrosion resistance
- Dyno and race tested to ensure maximum horsepower and torque output
- Backed by a limited lifetime warranty for the original purchaser
- Complies with EPA standards but is not CARB approved; CARB acknowledgment required
- Arrives in two boxes, ideal for custom or professional installation
- Perfect for street, race, and off-road applications seeking high performance upgrades
Fitment:
Pontiac GTO Base 2004

















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