Having a supply of clean, cold air is especially important on high performance engines, which is why AIRAID now offers unique roto-molded hats that enable carbureted engines to take advantage of AIRAID modular U-Build-It intake systems. This hat features a standard 5-1/8 inch inside diameter base, a 3-1/2 inch air intake inlet and is 5-1/2 inches in overall height. Shaped to improve airflow, you can use an AIRAID carburetor hat along with other UBI components to build your own high-performance cold air intake system.