Product Details

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Every Gibson 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 affect the factory warranty. Mandrel-bent tubing for optimum airflow and increased Horsepower. Heavy duty 3/8" thick laser cut port flanges-no warping or leaking. Bolt on installation- no welding required. Attaches to the original equipment crossover pipe. Air injection & oxygen sensor fittings provided. Premium gaskets and hardware. OEM style connections.

Fits ALL Hummer H2 models 2003 to 2007