Aluminum Air Pans fit between the carburetor and cowl area. Pan keeps engine heat away from the carburetor and allows cool fresh air from the cowl/windshield base area to enter the carburetor. Cooler intake air means extra horsepower. Carb mounting flange is uncut.Drag Parts USA offers Allstar Performance Aluminum Flat Plenum Air Pan ALL26101 at low everyday prices. Be sure to check out all of our products from Allstar Performance including Allstar Performance Air Pans and Cold Air Systems and Allstar Performance Cowl Induction.