The Rugged Ridge Throttle Body Spacer raises the throttle body 1 inch above the intake manifold. The lift helps optimize power and performance by drawing in colder denser air. The large bore design allows your system to inhale a larger volume of air producing more horsepower and torque. It features solid aluminum construction with a slick anodized black finish, and is a bolt on performance adder for both 4.0L and 2.5L engines.