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 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 1.50 inch
• Tubes (2) 1.25 inch Tubes
• Trans Cooler Fitting: 5/16 inch Inverted Flare