Kooks Headers 2150H630 2in. Long Tube Header and GREEN Catted X-Pipe Connection Kit LS1/LS6 5.7L

The Kooks Headers 2150H630 is a complete long tube header and GREEN catted X-pipe connection kit engineered for maximum exhaust flow and power gains on the LS1/LS6 5.7L platform. This kit delivers a significant upgrade over restrictive factory exhaust manifolds, unlocking additional horsepower and torque through optimized tube sizing and precision scavenging design.

Kit Includes:

• 2 in. x 3 in. T-304 aircraft-quality stainless steel long tube headers
• 3 in. x 3 in. GREEN catted stainless steel X-pipe connection kit
• Connects directly to 2-1/2 in. OEM-style exhaust for a clean, no-weld installation
• O2 sensor extensions, gaskets, and all installation hardware included

Kooks GREEN Catted X-Pipe:

• Features an enhanced precious metal catalyst coating designed to handle the increased heat demands of high-horsepower and forced induction applications
• Utilizes a 400-cell metallic high-flow catalytic converter for superior flow compared to standard 200-cell units
• Engineered to function properly in modern vehicle exhaust systems

Header Construction:

• Built from T-304 aircraft-quality stainless steel — a higher grade than the 200 or 400 series stainless used by competitors
• Laser-cut 3/8 in. thick stainless steel flanges resist warping and bending
• Hand-ground ports for a smooth, restriction-free exhaust path
• Kooks scavenging spike in every collector for maximum exhaust flow efficiency
• Tube lengths and firing order tuned specifically for the LS1/LS6 engine
• Handcrafted in the USA at Kooks' 45,000 sq. ft. facility in Statesville, NC

Quality Assurance:

• Every system is dyno and race-tested before leaving the facility
• Backed by a limited lifetime warranty to the original purchaser
• Over 60 years of racing pedigree — championship wins in NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA, and more

Note: This product is not legal for sale, installation, or use on pollution-controlled motor vehicles and does not meet CARB compliance. Not for use on public roads where emissions regulations apply.