Fitment For Chevy Bel-Air/Nomad V8 Engines 1955 1956 1957 Radiator Details Row Count: 4 Row Upper Inlet: 1.5in located on driver side Lower Outlet: 1.75in located on passenger side Surface Finish: Aircraft Grade Raw Aluminum OEM style brass petcock drain CNC machined filler neck and cap Fans Size Maximum Fan CFM: 2000±200 Fan Diameter (in): 16.050 inches Thickness (in): 2.790 inches Number of Blades: 10 blades Maximum Fan RPM: 2,250 rpm Blade Material: Plastic Amp Draw: 12.70 amps Includes the Mounting Tabs for an Easy Zip Tie Installation Thermostat Kit RED + connect directly to battery. WHITE wire to ignition switch power source. BLACK goes to thermos switch. BLUE wire goes to the Fans. Part Number Manufacturer Part Number:5057,CC5057,CU5057,RAD5057,MC5057