Cold Case Radiators GMT556A21-1K Features:

1977-1987 Chevy/GMC Truck Aluminum Performance Radiator. 21 inch Tall Radiator. For 19 inch Tall version, see GMT556AK. 1.25 inch Uppper Hose and 1.5 inch Lower Hose. For other configuration, see GMT556A21K.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 TruckDetails:100 percent TIG weldedAll AluminumPolished OE style tanks(2) 1.25 inch Tubes16 fins per inchCorrugated fins that give more surface area and more thermal transferPressure testedFor automatic transDirect fitment for 77-87 GM TruckRadiator Specs:Core Height 18.8 inchCore Width 28.35 inchOverall Height 21 inchOverall Width 34.33 inchOverall Thickness 3 inchUpper Hose 1.25 inchLower Hose 1.50 inchTubes (2) 1.25 inch TubesTrans Cooler Fitting: 5/16 inch Inverted Flare