1973-1976 Chevrolet Corvette C3 Aluminum Performance Radiator. These COLD-CASE radiators are Tig welded 100 percent aluminum and absolutely beautiful. Don't buy a 3 or 4 row aluminum radiator! It doesn't cool as good as these oversize 2 row models. These radiators are original appearing and have the correct stamping. Once painted, you'd be hard pressed to find a difference over an original versus a COLD-CASE. 100 percent TIG welded All Aluminum Polished OE style tanks 16 fins per inch Corrugated fins that give more surface area and more thermal transfer Pressure tested Direct fitment for 73-76 Corvette Old Part Number: RPE716 Radiator Specs Core Height 16.8 inch Core Width 27.5 inch Overall Height 19 inch Overall Width 33.7 inch Overall Thickness 3 inch Tubes (2) 1 inch Tubes Upper Hose 1.50 inch Lower Hose 1.77 inch