Radiator 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 assembled 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 Built-in 7-plate engine and transmission oil coolers on applicable models Optional 11-inch dual electric cooling fan package with 2,780 cfm airflow available Black Ice two-part epoxy coating available on all aluminum radiator models Controlled atmosphere furnace brazed core with TIG welded end tanks Note: This radiator does not come with any cooler fittings. Automatic & Differential Coolers built into passenger side: 32-876D Oil Coolers built into driver's side tank: 32-876B DeWitts Radiator Application Guide: 32-1139105M (Pro Series Direct Fit®, natural finish, dual 1-inch core, no cooler)Base model C6 with manual transmission (non-Z51 models) -Replaces GM# 15145946 32-1139105A (Pro Series Direct Fit®, natural finish, dual 1-inch core, internal 7-plate aluminum cooler) All C6 Z06 models with manual transmission (Except 2012 model year with Z07 option) All C6 with automatic transmission All dry sump engine models (Grand Sport, Z06) -Replaces GM# 21996495 & GM# 10353890 32-1139105B (Pro Series Direct Fit®, natural finish, dual 1-inch core, EOC, TOC) 2005-2006 with Z51 option 2007-2009 wet sump engines -Replaces GM# 10353889 32-1139105E (Pro Series Direct Fit®, natural finish, dual 1-inch core, EOC) Includes 7-plate internal engine oil cooler for C6 models that didn’t have an engine oil cooler from the factory -No GM# for this application, for adding internal oil cooler to manual cars 32-1139109Z (Pro Series Direct Fit®, natural finish, dual 1-inch core, ZR1 package) 2009-2013 with ZR1 option 2012 Z06 with special Z07 option -Replaces GM# 25999103 32-1139105Z (Pro Series Direct Fit®, natural finish, dual 1-inch core, engine-mounted cooler return line) 2013 Corvette Z06, Z51, and Grand Sports with engine-mounted cooler -Replaces GM# 25861236 Note:EOC: Engine Oil CoolerTOC: Transmission Oil Cooler (used in Z06 models for differential cooler) Radiator and Fan Combinations The best of both worlds! Combine the DeWitts Direct Fit® Pro Series C6 Corvette radiator application of choice with a custom fitted SPAL dual 11-inch fan and shroud package. These electric fans connect easily to your factory electric fan wiring, allowing full control from the PCM and flow 2,780 cfm (a 40 percent improvement over the stock fan) to keep your Corvette running cool no matter the demand you place on it! We offer our fan and shroud package on all our C6 radiators.32-4139105M (Pro Series Direct Fit®, natural finish, dual 1-inch core) Base model C6 with manual transmission (non-Z51 models) 32-4139105A (Pro Series Direct Fit®, natural finish, dual 1-inch core, internal 7-plate aluminum cooler) All C6 Z06 models with manual transmission (Except 2012 model year with Z07 option) All C6 with automatic transmission All dry sump engine models (Grand Sport, Z06, ZR1) 32-4139105B (Pro Series Direct Fit®, natural finish, dual 1-inch core, EOC, TOC) 2005-2006 with Z51 option 2007-2009 wet sump engines 32-4139105E (Pro Series Direct Fit®, natural finish, dual 1-inch core, EOC) Includes 7-plate internal engine oil cooler for C6 models that didn’t have an engine oil cooler from the factory (oil cooler ports are 3/4-16 SAE straight thread O-ring seal) 32-4139109Z (Pro Series Direct Fit®, natural finish, dual 1-inch core) 2009-2013 with ZR1 option 2012 Z06 with special Z07 option 32-4139105Z (Pro Series Direct Fit®, natural finish, dual 1-inch core, engine-mounted cooler return line) 2013 Corvette Z06, Z51, and Grand Sports with engine-mounted cooler Note:EOC: Engine Oil CoolerTOC: Transmission Oil Cooler Specifications DeWitts Direct Fit® Original Equipment Radiator Style: Single Pass Single Pass Radiator Flow Direction: Crossflow Crossflow Material Type: Aluminum Aluminum & Plastic Inlet Location: Upper driver side Upper driver side Outlet Location: Lower passenger side Lower passenger side Row Quantity: 2 1 Tube Size: 1" 1” Core Width: 23.5" 23.5” Core Height: 17" 15.25” on short versions 16.75” Overall Width: 29” 29” Core Thickness: 2.25" 1” Overall Thickness: 3" 2.875” Overall Height: 17" 17” Cap Required: No No Filler Neck Height: N/A N/A Inlet Size: 1.38” (Billet ZR1 connector on Z model) 1.38” (OEM ZR1 connector) Outlet Size: 1.38” 1.38” Trans/Diff Cooler Thread Size: M18-1.5 M18-1.5 Engine Oil Cooler Thread Size: 8 SAE O-ring 8 SAE O-ring Fan This fan package includes our Direct Fit® aluminum radiator, full shroud with twelve (12) rubber check valves (flaps), and dual High Performance 11" SPAL Fans. SPAL is a world leader in the design and manufacture of high-quality electric axial fans for automotive use. The kit uses the factory controller. Instructions: 32-LIT0006 - 32-SP463 Installation Instructions Specifications: Dual 11" SPAL Fans Blade Diameter: 11" Blade Orientation: Paddle CFM: 2720 (pair) Overall Width: 23.5" Overall Height: 17.3" Fan Thickness: 4.125" Amps: 30 each Fan SKU #: 32-SP30102052 Rotation: CCW Weight: 13 lbs # of Blades: 5 Color: Black Material: Plastic Push/Pull Pull Fuse Required: 40 amp Voltage: 12V FAQ 1. What is DeWitts C6 (32-SP463 and #32-SP463SC) fan upgrade? DeWitts C6 Corvette dual fan kit (32-SP463 and #32-SP463SC) is designed to fit our Pro-Series C6 radiators. This fan upgrade includes two high-performance SPAL 11” puller fans, a full shroud, mounting brackets, and our #32-E107 C6 pigtail. This kit ensures superior airflow, cooling efficiency, and durability. Please note, that this fan upgrade only fits DeWitts Pro-Series radiators. Model 32-SP463 will fit our full-height radiator and #32-SP463SC is designed to fit our cut-down radiators. The 32-SP463 and #32-SP463SC C6 Corvette dual fan kits include the SPAL #32-30102052 dual 11” puller fans with 2720 CFM. Overall Width: 23.5” Overall Height: 17.0” Fan Thickness: 4.125” 2. Will the OEM C6 Corvette control module fit the DeWitts #32-SP463 and #32-SP463SC fan upgrade kit? If you’re considering using one of our radiator fan combos, like #32-4139105A or #32-4139105B, with your C6 Corvette, rest assured that it is compatible with the factory fan controller. There’s an aluminum bracket included with our assembly where the OEM fan controller will be mounted. You won’t need to worry about buying a new control module, as this kit is designed to be compatible with your existing setup. 3. Are the DeWitts C6 radiator and fan combo kits plug and play? While DeWitts C6 Corvette radiator fan combo and add-on fan kits are designed for ease of installation, it’s important to note that they are not completely plug-and-play. In particular, the stock wiring is hardwired into the original fan motor and has a multi-wire plug in the controller, so some modification is necessary. To complete the installation, you will need to: Remove the stock fan controller from the original fan shroud Mount it to our new assembly Splice the red and black wires from the stock fan motor into the corresponding red and black wires on our fan kit While this process isn’t plug-and-play, it is straightforward, and we provide detailed wiring instructions for your convenience. You can access our wiring guide here: C6 wiring instructions. 4. Which radiator is right for my C6 Corvette (model year specific)? We offer different radiators for various 2005-2013 C6 Corvette models, and each one is tailored to the specific needs of your car. Below is a summary of recommended options: 5. Upgrading for modified C6 Corvettes: Upgrading your C6 Corvette with the DeWitts 11” brushless fan kit offers a significant improvement in engine cooling efficiency and overall performance. This high-performance fan kit features a brushless motor that operates more quietly and efficiently than traditional fan systems, ensuring optimal airflow and reducing engine temperatures during even the most demanding driving conditions. Brushless technology also contributes to increased reliability and longevity, making it a smart investment for enthusiasts looking to extend the life of their engine and prevent overheating. Additionally, the DeWitts fan kit is designed for a seamless fit into your C6, ensuring easy installation and a perfect match with your vehicle’s cooling system. By upgrading to the DeWitts 11” brushless fan kit, you’ll enjoy improved cooling performance, enhanced reliability, and peace of mind knowing your Corvette can handle high-performance driving with ease. C6 Corvette with ECS supercharger and headers: We recommend the #32-1139125A cut-down radiator and the #32-SP473SC dual brushless fan kit. You can also get it with a built-in oil cooler if necessary. 6. Can I add an oil cooler to my base model 2005-2013 Corvette that did not come with an oil cooler? If you own a base C6 Corvette that did not come with an oil cooler, you can still add one to your radiator. DeWitts model #32-1139105M is designed for manual transmission base models, but if you want to add an internal engine oil cooler, the #32-1139105E is the option for you. It includes a 7-plate aluminum cooler in the driver-side tank. You’ll need an oil cooler line kit, such as DeWitts #32-894D, which includes the necessary fittings, lines, and adapter block. 7. Radiator and fan upgrades for supercharged C6 Corvettes: For supercharged and heavily modified C6 Corvettes like those with the Vortech A&A kit, DeWitts cut-down radiators are the perfect solution. The #32-4139125B radiator fan combo will keep your supercharged engine running cool even in extreme conditions. The cut-down radiator provides extra clearance over the top of the radiator. The #32-4139125B model has a built-in engine oil cooler so you can remove the factory external oil cooler for added clearance. Added clearance is needed when installing the A&A intercooler, and this is the perfect solution to minimize extra parts. 8. What C6 Corvette radiator do I need with my wet sump or dry sump motor? From 2005 to 2013, the Chevrolet Corvette C6 came with both wet sump and dry sump engine configurations, depending on the model. Here’s a breakdown: Corvette Info 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 C6 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 C6 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. Our Pro Series Direct Fit® C6 Corvette radiator is built using the highest quality aluminum materials, assembled, furnace brazed, and TIG welded all in our 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. Our 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 our 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. Automatic transmission-equipped models feature a 7-plate internal cooler (twice the capacity of the stock cooler) while our engine oil cooler, also a 7-plate design, can be fitted optionally to radiator applications that weren’t originally fitted for one. Our Black Ice two-part epoxy coating is a semi-gloss black finish that provides an OE-like look for those that want to keep things low key under the hood. C6 Corvette Pro Series Direct Fit® Radiator Options Our C6 Corvette radiator replacement starts with our 32-1139105M DeWitts radiator for base non-Z51 models with manual transmissions. Depending upon application needs we provide the correct end tank configurations for hassle free connection to factory coolers and mounting points and to our optional dual 11-inch electric fan package if so equipped. For driver’s side aluminum radiator tank internal engine oil cooler fitted radiators we offer a direct replacement oil cooler hose kit with built in factory-style 7psi bypass and our own custom AN -10 oil cooler hose kit with billet engine adapter that makes installation and hose routing a bit easier. Either one of these oil cooler line kits will allow you to run our 7-plate internal engine oil cooler on applications that were not factory equipped with one. 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.
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