Kooks Headers KSH2411H420 Header and Catted Connection Kit for 2004 Pontiac GTO 5.7L LS1

Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!" Header and Connection Kit. 2004 Pontiac GTO LS1 5.7L. Includes 1-7/8in. x 3in. Stainless Steel Long Tube Headers/3in. x 2-1/2in.(OEM) Catted Stainless Steel Connection Pipes.

• Manufactured In The USA. Kooks Uses T304 Aircraft Quality Stainless Steel. Kooks Products are Backed by a Limited Lifetime Warranty To the Original Purchaser. Kooks Products Are Dyno And Race Tested and Designed For Maximum Power.
• Kooks Products Are Backed By A Limited Lifetime Warranty To The Original Purchaser
• Kooks Products Are Dyno And Race Tested And Designed For Maximum Power
• Kooks Uses T304 Aircraft Quality Stainless Steel
• Manufactured In The USA

Upgrade the exhaust performance of your 2004 Pontiac GTO with the Kooks Headers KSH2411H420 Header and Catted Connection Kit. Designed for vehicles equipped with the 5.7L LS1 engine, this system combines stainless steel long tube headers with catted connection pipes to improve exhaust flow, support increased power, and provide a properly matched connection to the factory-style exhaust system.

The kit includes 1-7/8-inch long tube headers constructed from T304 aircraft-quality stainless steel and 3-inch-to-2-1/2-inch catted stainless steel connection pipes. Kooks Headers products are dyno tested and race tested to support maximum performance in street, race, and off-road applications. Each component is handcrafted in the USA and backed by a limited lifetime warranty to the original purchaser.

This Kooks Headers kit fits the 2004 Pontiac GTO and is designed as a vehicle-specific exhaust upgrade. Professional installation is recommended to ensure proper fitment, connection alignment, and exhaust-system sealing. The catted configuration is EPA compliant as supplied; however, buyers should verify emissions requirements and local regulations before installation. This product is not CARB approved and may require applicable emissions-use acknowledgement.

Product Specifications and Technical Data

• Brand: Kooks Headers
• Part Number: KSH2411H420
• Application: 2004 Pontiac GTO
• Engine Compatibility: 5.7L LS1 V8
• Header Type: Long tube
• Header Primary Size: 1-7/8 inches
• Connection Pipe Size: 3 inches to 2-1/2 inches
• Material: T304 aircraft-quality stainless steel

What's Included

• Pair of stainless steel long tube headers
• Pair of catted stainless steel connection pipes

Features:

• Vehicle-specific fitment: Designed for the 2004 Pontiac GTO with the 5.7L LS1 engine.
• Performance-focused design: Long tube headers and matched connection pipes are engineered to improve exhaust flow and support increased power.
• Premium stainless steel construction: Made from durable T304 aircraft-quality stainless steel for strength, corrosion resistance, and long-term service.
• USA-made and tested: Handcrafted in the USA, with Kooks Headers products dyno tested and race tested for demanding performance applications.

Fitments:
2004 Pontiac GTO Base

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Compliant
Number Of Boxes: 2
Regular Stock: false
Units Per Sku: 1