Description: This double pass radiator works well for oval track racing applications where maximum efficiency is needed. The double pass design offers a 5 to 20 degree coolant temperature drop versus a standard, single pass radiator with equal core size. This double pass radiator features 100% all-aluminum construction. The furnace-brazed core increases durability compared to other radiators with epoxy-glued or crimped-gasket sealing methods. Two rows of 1 inch aluminum tubes allows this radiator to out cool a similarly sized radiator with five rows of copper tubes. A rugged billet aluminum filler neck with screw-in bleed is also included. 31X19 INCH RADIATOR: GM style Competition Row Radiator The upper and lower outlets are set up for a Chevy engine. 100% Tig welded, No epoxy! 3 Row Radiator with 1" Tubes Crossflow Design for better Cooling Overall Size: 788 x 502 x158mm (31.02" x 19.76" x 6.22") Core Size: 658 x 458 x 44mm (25.91" x 18.03" x 1.73") Inlet: 1-1/2" Outlet: 1-3/4" No Built in Transmission Cooler No brackets included Professional Installation is Highly Recommended No Instruction Included Package includes: 1X Aluminum Radiator (Includes Radiator Cap) Just as pictures show Fitment: Universal for Chevy GM SBC BBC