The Throttle Body Spacer raises the throttle body 1 inch above the intake manifold. The additional space helps optimize power and performance by drawing in colder denser air. And, the large bore design allows your system to inhale a larger volume of air. It features solid aluminum construction with a slick anodized finish, and adds bolt-on performance for 3.6L engines. NOT LEGAL FOR SALE OR USE IN CALIFORNIA or other States adopting CARB standards. RACING OR NON-HIGHWAY USE ONLY.