Product Summary

Single Pass Radiator Style, Aluminum, 2 Row Quantity

  • All DeWitts® radiators are 100% engineered and manufactured in the USA, backed with a lifetime warranty
  • Direct Fit® assures easy installation with factory pin-type mounting, factory inlet/outlet location and mates to factory shroud
  • Built specifically for manual transmission models with small block engines (ZQ3, LT1, L46)
  • Aluminum construction (2-row, 1” wide tube core) provides a 4100 BTU rating which is 30% better than original at half the weight
  • Black Ice™ semi-gloss painted finish for an original factory black look, with no effect on cooling performance

Key Specs

MFG. Part #32-1239070M
Radiator StyleSingle Pass
Radiator Flow DirectionCrossflow
Material TypeAluminum
FinishBlack Ice Epoxy Coating

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This radiator was used on 1969-72 small block Corvettes equipped with factory installed options. These options could include an automatic transmissions, air conditioning, or special engine options such as LT1 and L46. This “Direct Fit®” aluminum radiator features factory type press formed end tanks, dual row core, serpentine fins, and the factory type upper and lower channels. This radiator will provide 30% more cooling than the stock copper unit with half the weight and is epoxy free. It will fit into the stock core support and uses the original factory hoses. Absolutely no modifications are required. With the Black Ice™ finish this radiator looks and fits like the original radiator.

  • Direct Fit® with no modification
  • Epoxy free, aluminum, dual row core, 1" tubes
  • Press formed end tanks
  • Black Ice™ semi-gloss finish
  • Manual transmission radiator
  • Assembled and brazed in Howell, MI

Black Ice™ is a special two part epoxy paint. It is applied in a spray and it adheres to the aluminum and will never flake or peel off. The semi-gloss finish gives any radiator the look of an original copper/brass unit. The total thickness of the dried product is only .005” thick and it will not affect cooling performance.

The superior quality of a DeWitts® radiator begins with a manufacturing process that is controlled 100% in house. Every core is assembled and brazed in Howell, MI to ensure excellence throughout the entire build. DeWitts® is the only USA aftermarket radiator company to own an aluminum Nocolok® brazing furnace which allows for production of a superior, epoxy free, aluminum core. DeWitts® radiators are assembled with press formed end tanks which eliminate fabrication seams and potential leak points of common box tanks while providing an original equipment look for your classic car.



MFG. Part #32-1239070M
Radiator StyleSingle Pass
Radiator Flow DirectionCrossflow
Material TypeAluminum
FinishBlack Ice Epoxy Coating
Inlet LocationUpper driver side
Outlet LocationLower passenger side
Row Quantity2
Tube Size1.00"
Overall Width Range30.00" to 30.99"
Overall Width30.50"
Overall Height Range18.00" to 18.99"
Overall Height18.50"
Overall Thickness3.25"
Core Width Range26.00" to 26.99"
Core Width26.00"
Core Height Range18.00" to 18.99"
Core Height18.50"
Core Thickness2.25"
Cooling FanNot Included
Transmission CoolerNo
Shroud IncludedNo
Inlet Size1.50
Outlet Size1.75
Fan IncludedNo
Radiator Cap IncludedNo
Sold in QuantityEach