Gibson 01-03 Chevrolet Silverado 3500 Base 8.1L 1-3/4in 16 Gauge Performance Header - Stainless Wheel and Tire Accessories>Wheel Accessories and handling

and handling

140638 is a full True Dual

These simple devices plug right into the factory harness in place of the exhaust valves and prevent any code from ever being stored in the ECU due to the removal of the exhaust valves

diaphragm spring

Gibson 01-03 Chevrolet Silverado 3500 Base 8.1L 1-3/4in 16 Gauge Performance Header - Stainless Wheel and Tire Accessories>Wheel Accessories and handlingEvery Gibson Performance Header is Dyno tuned and engineered to deliver more usable horsepower and torque at low and mid range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock crossover pipe. They are well suited for lowered and raised vehicles, street and off road. 50 State Street legal. Meets EPA and CARB requirements. Will not