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Cold Case Performance Aluminum Radiators for 1977-1986 C10, 1977-1978 C15, 1979-1986 C1500 - GMT556A21-1K RADIATOR

SKU: RADGMT556A21-1K

Radiators

Cold Case Performance Aluminum Radiators for 1977-1986 C10, 1977-1978 C15, 1979-1986 C1500 - GMT556A21-1K RADIATOR

SKU: RADGMT556A21-1K

Radiators
A$2,342.87
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Cold-Case performance aluminum radiators are available and affordable for all. These high-quality, tube-and-fin performance radiators are true OE styles for most applications. Each Cold-Case design distributes fluid more evenly, eliminating hot and cold spots. Also, the massive cores take up the entire width of their tanks, so you get the most efficient cooling possible. The radiators drop-in without modifications needed (on most) and look original. Plus, Cold-Case stands behind its quality and research with a limited lifetime warranty on their products.

All Cold-Case radiators feature:

* Lightweight, efficient aluminum construction
* 100 percent TIG-welded
* Internally welded filler necks offer a clean, factory look
* Two oversized cooling rows for increased capacity
* 1 in. to 1 1/4 in. tubes for higher volume
* Works with factory filler cap
* Includes OEM-style petcock
* 42.7 percent lighter than comparable copper radiators
* 30 percent thicker materials than no-name aluminum radiators
* 60-day COOL guarantee

Part Type

Radiators

Data: v4.2 - Upd: 2026-09-27 16:25:58

Specifications

Product Attributes - Brand
Cold Case Radiators
Product Attributes - Manufacturer's Part Number
GMT556A21-1K
Product Attributes - Part Type
Radiators
Product Attributes - Product Line
Cold Case Performance Aluminum Radiators
Product Attributes - UPC
846861014929
Product Attributes - Radiator Material
Aluminum
Product Attributes - Radiator Style
Crossflow
Product Attributes - Transmission Cooler
Yes
Product Attributes - Inlet Location
Upper driver side
Product Attributes - Outlet Location
Lower passenger side
Product Attributes - Overall Width (in.)
34.33 in.
Product Attributes - Overall Height (in.)
21.00 in.
Product Attributes - Overall Thickness (in.)
3.00
Product Attributes - Row Quantity
2
Product Attributes - Radiator Finish
Polished
Product Attributes - Core Width (in.)
28.35 in.
Product Attributes - Core Height (in.)
18.80 in.
Product Attributes - Radiator Inlet Size
1.250 in.
Product Attributes - Radiator Outlet Size
1.500 in.
Product Attributes - Trans Cooler Line Connection
1/2 in.-20 inverted flare
Product Attributes - Trans Cooler Adapter Fittings Included
No
Product Attributes - Tube Size
1 1/4 in.
Product Attributes - Fan Included
Yes
Product Attributes - Fan Quantity
Dual
Product Attributes - Fan Diameter (in.)
12.00 in.
Product Attributes - Maximum Fan CFM
3,200 cfm
Product Attributes - Fan CFM Range
3,200-3,299
Product Attributes - Blade Material
Plastic
Product Attributes - Blade Color
Black
Product Attributes - Shroud Material
Aluminum
Product Attributes - Shroud Color
Natural
Product Attributes - Radiator Cap Included
No
Product Attributes - Quantity
Sold as a kit.

Reference Information

Brand Name/s Cold Case Radiators
StreetFX SKU radGMT556A21-1K
SFX Item ID 5025462
Supplier Item Code 5025462
Manufacturer SKU GMT556A21-1K
Manufacturer UPC 846861014929
Alternative References CCRGMT556A21-1K, C10, C15, C1500

Compatibility

Application Data
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelBIG TEN
    Beginning Year1978
    Ending Year1978
    Engine Size4.8L/292
    Engine FamilyGM L6 GAS
    Engine TypeL6
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelBIG TEN
    Beginning Year1978
    Ending Year1979
    Engine Size5.7L/350
    Engine FamilyOldsmobile diesel V8
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelBIG TEN
    Beginning Year1978
    Ending Year1980
    Engine Size4.1L/250
    Engine FamilyGM L6 GAS
    Engine TypeL6
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelBIG TEN
    Beginning Year1978
    Ending Year1980
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelBIG TEN
    Beginning Year1978
    Ending Year1980
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelBIG TEN
    Beginning Year1978
    Ending Year1980
    Engine Size7.4L/454
    Engine FamilyChevy big block Mark IV
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelBIG TEN
    Beginning Year1980
    Ending Year1980
    Engine Size4.8L/292
    Engine FamilyGM L6 GAS
    Engine TypeL6
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelBIG TEN
    Beginning Year1980
    Ending Year1980
    Engine Size6.6L/400
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCHEYENNE
    Beginning Year1977
    Ending Year1980
    Engine Size4.8L/292
    Engine FamilyGM L6 GAS
    Engine TypeL6
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCHEYENNE
    Beginning Year1977
    Ending Year1980
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCHEYENNE
    Beginning Year1977
    Ending Year1980
    Engine Size6.6L/400
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCHEYENNE
    Beginning Year1977
    Ending Year1980
    Engine Size7.4L/454
    Engine FamilyChevy big block Mark IV
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCHEYENNE
    Beginning Year1977
    Ending Year1981
    Engine Size4.1L/250
    Engine FamilyGM L6 GAS
    Engine TypeL6
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCHEYENNE
    Beginning Year1977
    Ending Year1981
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCHEYENNE
    Beginning Year1978
    Ending Year1981
    Engine Size5.7L/350
    Engine FamilyOldsmobile diesel V8
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCHEYENNE
    Beginning Year1981
    Ending Year1981
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCHEYENNE
    Beginning Year1981
    Ending Year1981
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCUSTOM
    Beginning Year1981
    Ending Year1981
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCUSTOM
    Beginning Year1981
    Ending Year1981
    Engine Size5.7L/350
    Engine FamilyOldsmobile diesel V8
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCUSTOM
    Beginning Year1981
    Ending Year1984
    Engine Size4.1L/250
    Engine FamilyGM L6 GAS
    Engine TypeL6
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCUSTOM
    Beginning Year1981
    Ending Year1986
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCUSTOM
    Beginning Year1981
    Ending Year1986
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCUSTOM
    Beginning Year1982
    Ending Year1986
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCUSTOM
    Beginning Year1982
    Ending Year1986
    Engine Size6.2L/379
    Engine FamilyCHEVY V8 DIESEL
    Engine TypeV8
    TransmissionAutomatic
  • UniversalNo
    MakeCHEVROLET
    ModelC10
    SubmodelCUSTOM
    Beginning Year1985
    Ending Year1986
    Engine Size4.3L/262
    Engine FamilyGM V6 GAS
    Engine TypeV6
    TransmissionAutomatic

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