Core Size: 19 3/8" H x 21 2/3" W ; Overall Size: 26 3/4" H x 26 1/2" W ; Upper inlet: 1 1/4" located on passenger side ; Lower outlet: 1 1/2" located on passenger side ; Transmisson Oil Cooler: ¢26×205×G1/4(Z) Fitment: For Chevy Pickup Truck Ls Engine Swap 3100 3200 3400 3500 LS SWAP ENGINE 1955 1956 1957 1958 1959 Features: 100% Leak Tested,3 Rows, Durability Tested, No Drilling or Modifications Needed for Installation High-quality material: Transmission Oil Cooler is constructed of high quality AA5052 aircraft grade aluminum construction to ensure an extremely long lasting operate life. The core of the Transmission Oil Cooler is welded in vacuum brazing furnace, no epoxy. Package Include: 1 X 3-Row AA5052 Aluminum Radiator ; 1 X CNC Machined Radiator Cap ; 1 X AA5052 Aluminum Shroud ; 1 X 16"120W Fans (Includes mounting kits) ; 1 X Thermostat Relay Kit Fitment: For Chevy Pickup Truck Ls Engine Swap 1955 1956 1957 1958 1959 Package Include: 1 X 3-Row AA5052 Aluminum Radiator 1 X CNC Machined Radiator Cap 1 X AA5052 Aluminum Shroud 1 X 16"120W Fans (Includes mounting kits) 1 X Thermostat Relay Kit FAN SPEC: 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 Radiator Size: 3-Row of tubes Core Racing Design Petcock Drain:OEM style brass petcock drain Core Dimensions: 19 3/8" high x 21 2/3" wide Overall Dimensions: 26 3/4" high x 26 1/2" wide Upper inlet: 1 1/4" located on passenger side. Lower outlet: 1 1/2" located on passenger side. Enignelooc Aluminum Radiator: This 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 Aluminum Radiator is at least 40% 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. About us: local delivery, if there is any problem, please feel free to emai us, we will solve it for you