2009-2013 4.8L, 5.3L, 6.2L GMC Sierra 1500 Intake System

Gains:   + 11 Horsepower (rwhp)** + 5 ft-lb Torque** + Up to 3 MPG Increase in fuel Economy* Gains indicated is to the wheels (whp) and are tested on an otherwise stock vehicle. CAI Inc. test our systems under real world driving conditions, and dyno test our products to the wheels with the hood closed. Many of our competitors test with the hood open, and under conditions that are not applicable to real world driving. This results in inflated hp numbers that are to the crank, and do not represent real world performance gains. CAI Inc. believes in bringing you the most accurate and applicable information possible, which is why we test with the hood closed and only publish gains to the wheels.   Intake System Includes:   • Aluminum Insulated Air Box • Removable Air Box lid with viewing window for easy filter inspection • 4.0" Thermal Coated Intake Tube • High Performance Air Filter (CF-9400) • Black Silicone Coupler & Elbow and Stainless Clamps • Installation instruct