Better Flow for More Power. Improve the power and performance of your 2003-2006 6.0L V8 Sierra with a RedRock 4x4 Cold Air Intake. By replacing your Sierra's restrictive factory intake with a high flow filter assembly, you will see and feel a noticeable increase in rear wheel horsepower and torque. This RedRock 4x4 Intake not only improves airflow for an increase in power, but it will also add a show-winning appearance to the engine bay with its brightly-polished aluminum intake tube.

No Tune Required. RedRock 4x4 engineered its Cold Air Intake to improve the performance of your V8 Sierra without the need of reprogramming your computer. By utilizing flow dynamics, this Intake will increase power using the original factory tune. Even though a re-tune is not required for operation, AmericanTrucks recommends a custom tune to reprogram the vehicle's computer (ECU) to get the best possible performance from this Cold Air Intake.

Reusable Air Filter. The included high flow air filter effectively filters out power robbing particles with its multi-layer design. The specially-treated media creates a sticky surface to capture microscopic contaminants before they can enter your Sierra's engine and do harm. Seeing that the filter is reusable, there is no need to buy a new filter every few thousand miles. You can just clean the filter, re-oil it, and reinstall - saving yourself money in the long haul.

Simple Bolt-on Installation. RedRock 4x4 designed its Cold Air Intake kit to be a direct bolt-on replacement. With no special tools or extra modifications required, installation can be completed in under an hour. All parts and detailed instructions are included.

Not CARB Certified. This RedRock 4x4 Cold Air Intake is not CARB certified, therefore it is not legal for use in California or other states adopting California emission standards. Not legal for use on pollution controlled motor vehicles; not intended for highway use.

Application. This RedRock 4x4 Polished Cold Air Intake System is specifically designed to fit the 2003-2006 GMC Sierra 1500 models equipped with the 6.0L V8 engine.

GMC Sierra 1500: 03-06

RedRock Cold Air Intake (03-06 6.0L Sierra 1500)