1977-1987 Chevy/GMC Truck Aluminum Performance Radiator. This is the radiator that is 21 inches high overall. For 19 inch tall version, see GMT556AK. 1.25 inch Upper 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.

When you need the biggest and best, look no further than the Cold Case Super Duty Line. All Super Duty kits include 2 row radiators with 1.25 inch tubes, aluminum fan shroud and dual 14 inch fans, flowing at 2200cfm per fan! For extreme horsepower applications or if you just want the best of the best...

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 3 inch
• Upper Hose 1.25 inch
• Lower Hose 1.5 inch
• Tubes (2) 1.25 inch Tubes
• Trans Cooler Fitting: 5/16 inch Inverted Flare