This is a direct bolt-in Flex-a-fit® aluminum radiator. Flex-a-fit® aluminum radiators made by Flex-a-lite® feature patented sidetank tank technology. The “T” channels offer 130 percent better heat transfer, a durable mounting system for the radiator, electric fan and optional oil cooler or expansion tank. System comes with three 10-inch electric fans, moving a total of 2,400 cfm of airflow. The dual 5/8-inch all-aluminum radiator core is hand welded in the U.S. to the Flex-a-fit sidetanks.