【Fitment 1】- Compatible with Dodge :1970-1978 B-Series Ram Van / 1972-1979 D/ W-Series Pickup / 1974-1979 RamCharger / 1974 Challenger; Fits Manual Transmission Only; Fits Models with 5.2L/ 5.9L 318/ 360 Cu In. V8 ONLY 【Fitment 2】- Compatible with Chevy: 1950-1954 Bel Air / 1953-1954 Corvette / 1949-1952 Fleetline; Fits Automatic/ Manual Transmission; Fits Models with SBC V8 Conversion/ Swapped Engines ONLY 【Specification】- Overall Size: 25.75 x 21.75 x 2.75 Inch. Core Size: 22.50 x 17.50 x 2.25 Inch. Inlet/Outlet Diameter: 1.50"/ 1.75". Transmission Cooler Thread Size : 1/2-20UNF 【Construction】- Made of High Quality Full T-6061 Aluminum Construction. 3-Row Tri Core Light-Weight Racing Design 【Feature】- Light Weight Direct Bolt-On OEM Fitment or Replacement; Stronger & Higher Capacity for Coolant than Stock Units; Improves Cooling by 35% to 45% Temperature