KSP GMC&Chevy Throttle Valve EGR Delete Cooler Kit helps prevent soot accumulation and clogged EGR valves, contributing to a longer vehicle lifespan. The EGR cooler lowers the temperature of the exhaust gases entering the cylinder, which in turn reduces the overall engine temperature. Fitment: 2004-2010 Chevrolet Silverado 2500 HD 6.6 Diesel LML Duramax 2004-2010 Chevrolet Silverado 3500 HD 6.6 Diesel LML Duramax 2004-2010 GMC Sierra 2500 HD 6.6 Diesel LML Duramax 2004-2010 GMC Sierra 3500 HD 6.6 Diesel LML Duramax Specification: Fully replaces the EGR system with no additional parts needed. Made from CNC-machined billet aluminum and stainless steel, Completing the coolant circuit. Materials include aluminum alloy and silicone. The aluminum construction offers long-lasting resistance to corrosion and rust, while providing excellent heat dissipation.