DeWitts Pro-series aluminum radiators feature two rows of 1.0-inch wide cooling tubes which provides a 25 percent increase in cooling performance. Our Direct Fitâ„¢ aluminum radiators feature factory type press formed end tanks, serpentine fins, and the factory type upper and lower channels. Each radiator core is assembled and brazed in our state-of-the-art aluminum brazing furnace. DeWitts radiators are also epoxy free and come with a limited lifetime warranty. Direct Fitâ„¢ is our official trademark and it means your radiator will fit, without modifications. Aluminum 2 row 1-inch tube dual 11-inch Spal fans and wireing.