Product Summary

Single Pass Radiator Style, Aluminum, 2 Row Quantity

  • DeWitts® radiators are 100% engineered and manufactured in the USA, backed with a lifetime warranty
  • Direct Fit® assures easy installation with original mounting locations and factory 1997-2004 C5 connections
  • Two-row, 2.25” thick core doubles factory cooling capacity, adding an additional gallon of coolant, and increases efficiency 25% over stock
  • Press-formed and fully welded end tanks replace factory gasket-sealed plastic end tanks, making this unit the best Corvette radiator for track days
  • This manual transmission version has no internal engine oil cooler

Key Specs

MFG. Part #32-1139097M
Radiator StyleSingle Pass
Radiator Flow DirectionCrossflow
Material TypeAluminum

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  • Complete aluminum radiator assembly with no plastic end tanks or rubber gaskets
  • Two core radiator design with dual 1-inch-wide core tubes for maximum cooling
  • Press formed end tanks fully welded to core with no gaskets or epoxy construction
  • 1.38-inch factory-sized cooling hose inlet and outlet connections to use stock hoses
  • Direct Fit® upgrade means just that, with no modifications needed to your Corvette
  • Radiators are 100 percent manufactured in the U.S.A. with a lifetime warranty
  • 2-1/4-inch-thick core increases coolant capacity by one gallon without fitment issues
  • Serpentine cooling fins deliver optimum airflow across core tubes for cooling
  • Controlled atmosphere furnace brazed core with TIG welded end tanks
  • Optional 12-inch dual electric cooling fan package with 3,200 cfm airflow available

America’s Sports Car Deserves the Best Aluminum Radiator Upgrade

Corvettes do many things quite well. From hot lapping the drag strip to stretching its legs on the road course, or even taking in a cross-country road trip, the Corvette has the power, handling, braking, and comfort to handle anything you can throw at it. That is until you notice the temp gauge climbing, that sweet tattle tale whiff of coolant, and steam exiting your hood gaps when the stock cooling system is overwhelmed by aftermarket high performance upgrades.

With the radiator design GM used on the C5 Corvette, like many designs on the road today, product costs and installation methods on the assembly line dictate the product and its compromises. An aluminum radiator core with injection molded plastic end tanks that are crimped to the core, sealed with a giant O-ring, means Chevrolet’s Corvette befalls the same issues as most vehicles using a similar radiator design when asked to do more that it was designed for.

While this design saves weight and allows mounts to be molded into the tank, saving the cost of additional bracketry to secure the radiator, the vibration felt throughout the chassis from powerful engine upgrades and extended hard driving puts a lot of strain on these mounting points, creating cracks, and the harmonics/twisting motion creates leaks at the crimping point of the plastic end tanks. A lack of cooling system service creates failure points too. Solve these issues with a DeWitts Direct Fit® performance aluminum C5 Corvette radiator upgrade.

Built to Fit Your Corvette with Zero Modifications to Install

We get it, the injection molded end tanks save money and are easy to manufacture while handling the Corvette’s stock cooling needs, but that’s not how we do things with DeWitts radiators. The DeWitts Pro Series Direct Fit® C5 Corvette radiator is built using the highest quality aluminum materials, assembled, furnace brazed, and TIG welded all in its Wixom, Michigan facility (just 30 mins up I-96 from GM’s corporate headquarters at the Renaissance Center). Each radiator carries a limited lifetime warranty, is pressure tested, and carefully double wall boxed with insulation to ensure it makes the trip to you and keeps your project moving forward.

The press formed end tanks mean you won’t have any fitment issues and your factory cooling hoses, oil cooler lines, fan shroud, and more will all connect right up without modification. Flat plate welded end tanks that its competitors use rarely have this luxury, requiring modifications to your car to fit the larger tanks and/or additional bracketry or adapters to refit your stock components. Using a two-row core built with 1-inch-wide core tubes and serpentine cooling fins maximizes air flow contact through the core to pull away the most heat, no matter the demand on the system, while increasing coolant capacity by one gallon over the stock single row core.

This DeWitts C5 radiator is designed for the base C5 models with manual transmission and the Z06 optioned cars. We do offer DeWitts C5 radiators for factory automatic transmission applications, as well as for those with auto trans AND engine oil coolers from the factory. DeWitts even offers a model for those that wish to add the factory engine oil cooler option using aftermarket AN fittings. DeWitts offers an optional C5 Corvette Cooling Fan Upgrade that features dual 12-inch fans and flows 3,280 cfm of air; double the stock single fan capability. Finally, be sure to add some DeWitts High Performance coolant to your order to protect your cooling system and help it achieve maximum thermal capabilities.




MFG. Part #32-1139097M
Radiator StyleSingle Pass
Radiator Flow DirectionCrossflow
Material TypeAluminum
Inlet LocationUpper driver side
Outlet LocationLower passenger side
Row Quantity2
Tube Size1.00"
Overall Width Range31.00" to 31.99"
Overall Width31"
Overall Height Range17.00" to 17.99"
Overall Height17"
Overall Thickness3.25"
Core Width Range24.00" to 24.99"
Core Width24.75"
Core Height Range17.00" to 17.99"
Core Height17"
Core Thickness2.25"
Cooling FanNot Included
Transmission CoolerNo
Shroud IncludedNo
Inlet Size1.25
Outlet Size1.25
Fan IncludedNo
Radiator Cap IncludedNo
Sold in QuantityEach