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21 in. Aluminum Radiator and Dual Fan Kit for 1977-1987 Chevrolet/GMC Pickup
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COLD CASE RADIATORSPART NUMBER: 359-GMT556A21-1S

21 in. Aluminum Radiator and Dual Fan Kit for 1977-1987 Chevrolet/GMC Pickup

$81654
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21 in. Aluminum Radiator and Dual Fan Kit
  • 1977-1987 Chevrolet/GMC Pickup
  • Automatic Transmission
  • 1.25 in. Upper/1.50 in. Lower Hose
  • Dual 14 in. Fans
  • Polished Aluminum
  • Sold as a Kit

    Cold Case Radiators GMT556A21-1SK combines a direct-fit 21 in. aluminum performance radiator with an aluminum shroud and dual 14 in. electric fans for 1977-1987 Chevrolet/GMC pickup applications with automatic transmissions. The two-row core, oversized tubes, and corrugated fins are designed to improve coolant capacity and heat transfer while retaining an OE-style appearance.

    Cold Case Radiators GMT556A21-1SK Features:

    • Fits 1977-1987 Chevrolet/GMC pickup trucks
    • Designed for automatic-transmission applications
    • 100% TIG-welded aluminum construction
    • Polished OE-style tanks
    • Two-row core with 1.25 in. tubes
    • 16 fins per inch with corrugated fin design
    • 18.80 in. core height
    • 28.35 in. core width
    • 21.00 in. overall height
    • 34.33 in. overall width
    • 3.00 in. overall thickness
    • 1.25 in. upper hose connection
    • 1.50 in. lower hose connection
    • 5/16 in. inverted-flare transmission cooler fitting
    • Pressure-tested construction

    Cold Case Radiators GMT556A21-1SK Includes:

    • Aluminum performance radiator
    • Aluminum fan shroud
    • 2 14 in. electric cooling fans
    • Part TypeRadiator
    BrandCOLD CASE RADIATORS
    Package Height16.0
    Package Width26.0
    Package Length36.0
    Weight50.0 PG
    Part CategoryPerformance Parts
    Overall Thickness3.00 in.
    Overall Height21.00 in.
    Wiring IncludedNo
    Fits77-87 Chevy Truck|77-87 GMC Truck
    Shroud IncludedYes
    Fins Per Inch16
    Universal FitNo
    Trans Cooler Connection5/16 in. Inverted Flare
    Upper Hose1.25 in.
    Transmission TypeAutomatic
    Amp Draw6.85 Avg
    Core Width28.35 in.
    Row Quantity2
    Overall Width34.33 in.
    Tube Size1.25 in.
    Radiator FinishPolished
    Transmission CoolerYes
    FinishPolished
    Radiator StyleCrossflow
    Fan Quantity2
    Radiator MaterialAluminum
    Vehicle TypeTruck/SUV
    QuantitySold as a Kit
    Fan Diameter (In.)14 in.
    Transmission Cooler Fitting Size5/16 in. Inverted Flare
    MaterialAluminum
    Max Fan Cfm3600 CFM
    Core Height18.80 in.
    Thickness6.75 in.
    Radiator Outlet Size1.50 in.
    Lower Hose1.50 in.
    Fan Diameter14 in.
    Radiator Inlet Size1.25 in.
    Fan IncludedYes
    Part FitmentDirect Fit
    Vendor Part NumberGMT556A21-1SK
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
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