1977-1987 Chevy/GMC Truck Aluminum Performance Radiator. This is the radiator that is 21 inches high overall. For the 19 inches high version, see GMT556AK 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.

Fits:
1977-1987 Chevy/GMC Truck Details: 100 percent TIG welded All Aluminum Polished OE style tanks (2) 1.25 inch Tubes 16 fins per inch Corrugated fins that give more surface area and more thermal transfer Pressure tested For automatic trans Direct fitment for 77-87 GM Truck Radiator Specs Core Height 18.8 inch Core Width 28.35 inch Overall Height 21 inch Overall Width 34.33 inch Overall Thickness 6 inch Upper Hose 1.50 inch Lower Hose 1.75 inch Tubes (2) 1.25 inch Tubes