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Super Part - by , April 1, 2020
87/ 100stars
This is everything what I need

Top Quality Radiator GM

Radiator 000000366621 000000366621

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

InStock CAD 2025-03-28

$945.51CAD945.51

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



Fitment:
  • GMC
    • C1500, Heavy Half (1979 - 1980)
    • Jimmy, Street Coupe (1978 - 1982)
    • K1500, High Sierra (1979 - 1986)
  • Chevrolet
    • C10, Deluxe (1981)
    • K10, Custom (1981 - 1986)
    • K5 Blazer, Scottsdale (1984)

Our SKU # for this part is GMT556A21K-GSWT



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  1. Home
  2. Camaro parts
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  4. GTO parts
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