77-87 Chevy/GMC Pickup Truck 21 Inch Aluminum Radiator AT and 12 Inch Fan Kit Cold Case Radiators

Skip to product information
1 of 2

Cold Case Radiators

SKU:GMT556A21K

Regular price $692.54
Regular price Sale price $692.54
Sale Sold out
Shipping calculated at checkout.
Quantity
View full details

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
CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Vehicle Fitment

Year Make Model Trim
1977–1980 Chevrolet C10 Custom Deluxe
1977–1980 Chevrolet K5 Blazer Custom Deluxe
1977–1980 Chevrolet K10 Custom Deluxe
1977–1980 Chevrolet K5 Blazer Cheyenne
1977–1981 Chevrolet C10 Cheyenne
1977–1981 Chevrolet K10 Cheyenne
1977–1982 GMC Jimmy Sierra Grande
1977–1985 GMC Jimmy High Sierra
1977–1986 Chevrolet C10 Silverado
1977–1986 Chevrolet K10 Silverado
1977–1986 Chevrolet C10 Scottsdale
1977–1986 Chevrolet K10 Scottsdale
1977–1987 GMC Jimmy
1977–1987 GMC Jimmy Sierra Classic
1978 Chevrolet K5 Blazer Silverado
1978–1980 Chevrolet C10 Big Ten
1978–1982 GMC Jimmy Street Coupe
1979–1980 GMC C1500 Heavy Half
1979–1982 GMC C1500 Sierra Grande
1979–1982 GMC K1500 Sierra Grande
1979–1982 GMC C1500 Street Coupe
1979–1986 GMC C1500
1979–1986 GMC C1500 Sierra Classic
1979–1986 GMC K1500 Sierra Classic
1979–1986 GMC C1500 High Sierra
1979–1986 GMC K1500 High Sierra
1979–1986 GMC K1500
1980–1986 Chevrolet K5 Blazer Silverado
1981 Chevrolet K10 Deluxe
1981 Chevrolet C10 Deluxe
1981 Chevrolet K5 Blazer Deluxe
1981–1986 Chevrolet K10 Custom
1981–1986 Chevrolet K5 Blazer Custom
1981–1986 Chevrolet C10 Custom
1984 Chevrolet K5 Blazer Scottsdale