Airaid U-Build-It - GM A Body Kit w/ 4.0in Filter Adapter Passenger SideThe U Build It Universal Air Box is a complete air box and filter kit for making a custom high performance air intake system. The air box is a one piece, roto molded unit featuring a stylish aluminum lid. The air box is designed to allow fresh air to freely flow into the air filter while protecting the intake air from engine bay heat in order to further promote additional horsepower and torque in the engine. This kit includes an AIRAID premium