1977-1987 Chevy/GMC Truck Aluminum Performance Radiator.
This is the radiator that is 21 Inch high overall. See GMT556A for the 19 Inch high version.
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.
- 100 percent TIG welded
- All Aluminum
- 2 Rows of 1.25 Inch tubes
- Polished OE style tanks
- 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
- Tubes (2) 1.25 Inch Tubes
- Upper Hose 1.50 Inch
- Lower Hose 1.75 Inch
COLD-CASE Radiators 77-87 Chevy/GMC Pickup Truck 21 Inch Aluminum Radiator Automatic Transmission Cold Case Radiators GMT556A21
Specifications:
| Country of Origin | CHN |
| Sold As | Each |
| UPC | 846861014912 |
| Availability | Available |
| Thickness | 3 Inch |
| Universal | No |
| Fits | 77-87 Chevy/GMC Truck |
| Overall Width | 34.33 Inch |
| Core Height | 18.8 Inch |
| Core Width | 28.35 Inch |
| Overall Height | 21 Inch |
| Upper Hose | 1.5 Inch |
| Lower Hose | 1.75 Inch |
| Fins Per Inch | 16 |
| Trans Cooler Fitting Size | 5/16 Inch Inverted Flare |
This Part Fits:
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1977 | GMC | Jimmy | ||
| 1978 | GMC | Jimmy | ||
| 1979 | GMC | Jimmy | ||
| 1980 | GMC | Jimmy | ||
| 1981 | GMC | Jimmy | ||
| 1982 | GMC | Jimmy | ||
| 1983 | GMC | Jimmy | ||
| 1984 | GMC | Jimmy | ||
| 1985 | GMC | Jimmy | ||
| 1986 | GMC | Jimmy | ||
| 1987 | GMC | Jimmy | ||
| 1977 | Chevrolet | C10 | Scottsdale | |
| 1978 | Chevrolet | C10 | Scottsdale | |
| 1979 | Chevrolet | C10 | Scottsdale | |
| 1980 | Chevrolet | C10 | Scottsdale | |
| 1981 | Chevrolet | C10 | Scottsdale | |
| 1982 | Chevrolet | C10 | Scottsdale | |
| 1983 | Chevrolet | C10 | Scottsdale | |
| 1984 | Chevrolet | C10 | Scottsdale | |
| 1985 | Chevrolet | C10 | Scottsdale | |
| 1986 | Chevrolet | C10 | Scottsdale | |
| 1977 | Chevrolet | K10 | Cheyenne | |
| 1978 | Chevrolet | K10 | Cheyenne | |
| 1979 | Chevrolet | K10 | Cheyenne | |
| 1980 | Chevrolet | K10 | Cheyenne | |
| 1981 | Chevrolet | K10 | Cheyenne | |
| 1977 | Chevrolet | C10 | Cheyenne | |
| 1978 | Chevrolet | C10 | Cheyenne | |
| 1979 | Chevrolet | C10 | Cheyenne | |
| 1980 | Chevrolet | C10 | Cheyenne | |
| 1981 | Chevrolet | C10 | Cheyenne | |
| 1977 | Chevrolet | K5 Blazer | Cheyenne | |
| 1978 | Chevrolet | K5 Blazer | Cheyenne | |
| 1979 | Chevrolet | K5 Blazer | Cheyenne | |
| 1980 | Chevrolet | K5 Blazer | Cheyenne | |
| 1977 | Chevrolet | K10 | Silverado | |
| 1978 | Chevrolet | K10 | Silverado | |
| 1979 | Chevrolet | K10 | Silverado | |
| 1980 | Chevrolet | K10 | Silverado | |
| 1981 | Chevrolet | K10 | Silverado | |
| 1982 | Chevrolet | K10 | Silverado | |
| 1983 | Chevrolet | K10 | Silverado | |
| 1984 | Chevrolet | K10 | Silverado | |
| 1985 | Chevrolet | K10 | Silverado | |
| 1986 | Chevrolet | K10 | Silverado | |
| 1977 | Chevrolet | C10 | Silverado | |
| 1978 | Chevrolet | C10 | Silverado | |
| 1979 | Chevrolet | C10 | Silverado | |
| 1980 | Chevrolet | C10 | Silverado | |
| 1981 | Chevrolet | C10 | Silverado | |
| 1982 | Chevrolet | C10 | Silverado | |
| 1983 | Chevrolet | C10 | Silverado | |
| 1984 | Chevrolet | C10 | Silverado | |
| 1985 | Chevrolet | C10 | Silverado | |
| 1986 | Chevrolet | C10 | Silverado | |
| 1977 | Chevrolet | C10 | Custom Deluxe | |
| 1978 | Chevrolet | C10 | Custom Deluxe | |
| 1979 | Chevrolet | C10 | Custom Deluxe | |
| 1980 | Chevrolet | C10 | Custom Deluxe | |
| 1977 | Chevrolet | K5 Blazer | Custom Deluxe | |
| 1978 | Chevrolet | K5 Blazer | Custom Deluxe | |
| 1979 | Chevrolet | K5 Blazer | Custom Deluxe | |
| 1980 | Chevrolet | K5 Blazer | Custom Deluxe | |
| 1977 | Chevrolet | K10 | Custom Deluxe | |
| 1978 | Chevrolet | K10 | Custom Deluxe | |
| 1979 | Chevrolet | K10 | Custom Deluxe | |
| 1980 | Chevrolet | K10 | Custom Deluxe | |
| 1977 | GMC | Jimmy | Sierra Grande | |
| 1978 | GMC | Jimmy | Sierra Grande | |
| 1979 | GMC | Jimmy | Sierra Grande | |
| 1980 | GMC | Jimmy | Sierra Grande | |
| 1981 | GMC | Jimmy | Sierra Grande | |
| 1982 | GMC | Jimmy | Sierra Grande | |
| 1977 | GMC | Jimmy | Sierra Classic | |
| 1978 | GMC | Jimmy | Sierra Classic | |
| 1979 | GMC | Jimmy | Sierra Classic | |
| 1980 | GMC | Jimmy | Sierra Classic | |
| 1981 | GMC | Jimmy | Sierra Classic | |
| 1982 | GMC | Jimmy | Sierra Classic | |
| 1983 | GMC | Jimmy | Sierra Classic | |
| 1984 | GMC | Jimmy | Sierra Classic | |
| 1985 | GMC | Jimmy | Sierra Classic | |
| 1986 | GMC | Jimmy | Sierra Classic | |
| 1987 | GMC | Jimmy | Sierra Classic | |
| 1977 | Chevrolet | K10 | Scottsdale | |
| 1978 | Chevrolet | K10 | Scottsdale | |
| 1979 | Chevrolet | K10 | Scottsdale | |
| 1980 | Chevrolet | K10 | Scottsdale | |
| 1981 | Chevrolet | K10 | Scottsdale | |
| 1982 | Chevrolet | K10 | Scottsdale | |
| 1983 | Chevrolet | K10 | Scottsdale | |
| 1984 | Chevrolet | K10 | Scottsdale | |
| 1985 | Chevrolet | K10 | Scottsdale | |
| 1986 | Chevrolet | K10 | Scottsdale | |
| 1977 | GMC | Jimmy | High Sierra | |
| 1978 | GMC | Jimmy | High Sierra | |
| 1979 | GMC | Jimmy | High Sierra | |
| 1980 | GMC | Jimmy | High Sierra | |
| 1981 | GMC | Jimmy | High Sierra | |
| 1982 | GMC | Jimmy | High Sierra | |
| 1983 | GMC | Jimmy | High Sierra | |
| 1984 | GMC | Jimmy | High Sierra | |
| 1985 | GMC | Jimmy | High Sierra | |
| 1978 | Chevrolet | K5 Blazer | Silverado | |
| 1978 | GMC | Jimmy | Street Coupe | |
| 1979 | GMC | Jimmy | Street Coupe | |
| 1980 | GMC | Jimmy | Street Coupe | |
| 1981 | GMC | Jimmy | Street Coupe | |
| 1982 | GMC | Jimmy | Street Coupe | |
| 1978 | Chevrolet | C10 | Big Ten | |
| 1979 | Chevrolet | C10 | Big Ten | |
| 1980 | Chevrolet | C10 | Big Ten | |
| 1980 | Chevrolet | K5 Blazer | Silverado | |
| 1981 | Chevrolet | K5 Blazer | Silverado | |
| 1982 | Chevrolet | K5 Blazer | Silverado | |
| 1983 | Chevrolet | K5 Blazer | Silverado | |
| 1984 | Chevrolet | K5 Blazer | Silverado | |
| 1985 | Chevrolet | K5 Blazer | Silverado | |
| 1986 | Chevrolet | K5 Blazer | Silverado | |
| 1981 | Chevrolet | C10 | Deluxe | |
| 1981 | Chevrolet | K5 Blazer | Deluxe | |
| 1981 | Chevrolet | C10 | Custom | |
| 1982 | Chevrolet | C10 | Custom | |
| 1983 | Chevrolet | C10 | Custom | |
| 1984 | Chevrolet | C10 | Custom | |
| 1985 | Chevrolet | C10 | Custom | |
| 1986 | Chevrolet | C10 | Custom | |
| 1981 | Chevrolet | K10 | Custom | |
| 1982 | Chevrolet | K10 | Custom | |
| 1983 | Chevrolet | K10 | Custom | |
| 1984 | Chevrolet | K10 | Custom | |
| 1985 | Chevrolet | K10 | Custom | |
| 1986 | Chevrolet | K10 | Custom | |
| 1981 | Chevrolet | K5 Blazer | Custom | |
| 1982 | Chevrolet | K5 Blazer | Custom | |
| 1983 | Chevrolet | K5 Blazer | Custom | |
| 1984 | Chevrolet | K5 Blazer | Custom | |
| 1985 | Chevrolet | K5 Blazer | Custom | |
| 1986 | Chevrolet | K5 Blazer | Custom | |
| 1981 | Chevrolet | K10 | Deluxe | |
| 1984 | Chevrolet | K5 Blazer | Scottsdale |