Description
Boost Your Sierra’s Performance with High-Flow Long Tube Headers. The Kooks 1-3/4-Inch Long Tube Headers with Ultra-GREEN Catted Y-Pipe are engineered to maximize exhaust flow, resulting in improved horsepower and torque. With a high-flow design, these headers optimize exhaust scavenging, reducing backpressure and enhancing throttle response for a more powerful driving experience.
Durable, Corrosion-Resistant, and Built for Long-Term Use. Constructed from high-quality stainless steel, these headers resist rust and corrosion while maintaining structural integrity under extreme heat. The included Ultra-GREEN catalytic converters ensure emissions compliance while allowing for efficient exhaust flow. Designed for a precise fit, these headers provide a seamless upgrade without sacrificing reliability.
Installation. Professional installation is recommended due to the complexity of exhaust system modifications.
Application. The Kooks 1-3/4-Inch Long Tube Headers with Ultra-GREEN Catted Y-Pipe are designed to fit 2019-2026 5.3L GMC Sierra 1500 models.
CA Residents: WARNING: Cancer and Reproductive Harm
- Kooks 1-3/4-Inch Long Tube Headers with Ultra-GREEN Catted Y-Pipe
- Mandrel-Bent 1-3/4-Inch Stainless Steel Tubing for Maximum Exhaust Flow
- Ultra-GREEN High-Performance Catalytic Converters for Emissions Compliance
- Designed to Improve Horsepower and Torque
- Optimized Collector Design for Enhanced Exhaust Scavenging
- Corrosion-Resistant Stainless Steel Construction
- Direct Bolt-On Installation with Included Hardware
- Fits 2019-2026 5.3L GMC Sierra 1500 Models






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