【Construction】- Constructed of High Quality T-6061 Aluminum Construction. High Performance JDM Spec. 3-Row Racing Design 【Feature】- Light Weight Direct Bolt-On OEM Fitment or Replacement. Stronger & Higher Capacity for Coolant than Stock Units 【High Performance】- Highly Increase Cooling Performance, Make Heat Dissipation More Efficient to Prevent Premature Engine Failure 【Specification】- Overall Size: 22.75 x 25.5 x 2.5 Inch. Core Size: 19.75 x 20.75 x 2.25 Inch. Inlet/Outlet Diameter: 1.50"/ 1.75". Transmission Cooler Thread Size : 1/2-20UNF 【Fitment】- Compatible with Chevy Pickup / Suburban L6 Models 1947-1954