This AA5052 Aluminum Radiator is designed to provide maximum cooling efficiency to prevent premature engine failure. Its light-weight, and high-heat transferring aluminum features a tube and fin design that, dramatically increases surface area that enables the heat to dissipate more efficiently. This AA5052 Aluminum Radiator is at least 30%-45% more efficient than stock ones. Most importantly, it has a much higher capacity for coolant than stock ones, which means that your cooling system will be more efficient and will be more resistant to temperature surges in racing applications. Radiator: Core Material: All Aluminum Surface Finish: Raw Aluminum Unpainted Includes CNC machined filler neck and cap Including OEM Style Brass Petcock Drain. High Performance Racing Spec. 3-Row of tubes Core Racing Design Down Flow Or Cross Flow Type: Down Flow Mounting Type: Bracket Overall Size: Height: 23 1/2 X Width: 25 1/2 Core Height: 18 1/2 X Width: 20 Inlet Diameter: 1 1/4in Passenger Side Outlet Diameter: 1 1/2in Driver Side Transmission Oil Cooler Fitting Type: 1/2-20 Straight Thread, Inverted Flare Internal Transmission Oil Cooler: Yes Filler Neck Attached: Yes Vehicle Fitment: For Jeep Wrangler YJ TJ 2.4L 2.5L L4 1987-2006 For Jeep Wrangler YJ TJ 4.0L 4.2L L6 1987-2006 Description: The core of the radiator is welded in vacuum brazing furnace, no epoxy.The Radiator are 100% welded by TIG Stronger & Higher Capacity for Coolant than OEM units Made of High Quality Aircraft Grade Raw Aluminum Construction Full Raw Aluminum radiator is designed to provide maximum cooling efficiency to prevent premature engine failure Its light-weight, and high-heat transferring aluminum features a tube and fin design that, dramatically increases surface area that enables the heat to dissipate more efficiently