DESCRIPTION UNLEASH THE FULL POTENTIAL OF YOUR C8 For over 20 years, DeWitts Radiator has set the standard in Corvette cooling systems, driven by a commitment to innovation, durability, and race-proven performance. The C8 Corvette is a masterpiece of engineering—but in demanding conditions, even the best machines need an edge. That’s why DeWitts has engineered a complete three-unit Direct Fit™ high-performance radiator package specifically for 2020–Present C8 Corvettes equipped with LT2, LT6, or LT7 engines. Each radiator features high-efficiency, multi-louvered fin cores with increased coolant volume, delivering significantly improved heat rejection compared to OE units. The cores are constructed by hand, with US born aluminum and an optimized fin pitch to maximize airflow and cooling performance under extreme load. Designed as a true bolt-in upgrade, they feature Direct Fit™ OEM-style mounting and fully compatible hose and sensor connections. Whether you're attacking corners at the track or pushing your Corvette to its limits on the open road, consistent cooling is essential for sustaining power and ensuring long-term reliability. This high-performance radiator package delivers the thermal management needed to keep temperatures in check under any driving condition. REAL BENEFITS, REAL RESULTS Complete aluminum radiator assembly with no plastic end tanks or rubber gaskets Track-optimized performance proven in racing applications Two row radiator design with dual 1-inch-wide core tubes for maximum cooling Fabricated end tanks fully TIG-welded to the core with no gaskets or epoxy construction Factory-sized cooling hose inlet and outlet connections to use stock hoses Radiators are born from US raw material and assembled entirely in the U.S.A. Covered by DeWitts exclusive lifetime warranty Increased coolant capacity and core surface area without fitment issues Serpentine cooling fins deliver optimum airflow across core tubes for cooling Mates directly to OE electric cooling fan and shroud In-house controlled atmosphere furnace brazed FITMENT 32-1139120L C8 LEFT FRONT RADIATOR • Pro Series Direct Fit™, natural finish, dual 1-inch core 32-1139120R C8 RIGHT FRONT RADIATOR • Pro Series Direct Fit™, natural finish, dual 1-inch core 32-1139121M C8 AUXILIARY REAR RADIATOR • Pro Series Direct Fit™, natural finish, dual 1-inch core • Base Stingray or Z51 retrofit for enhanced cooling • Not available for convertibles SPECIFICATIONS .spec-table { width:100%; border-collapse:collapse; table-layout:auto; } .spec-table th, .spec-table td { border:1px solid #d0d0d0; padding:8px; text-align:center; vertical-align:middle; font-size:14px; line-height:1.35; } .spec-table thead th { font-weight:700; } .spec-table th:first-child, .spec-table td:first-child { text-align:left; font-weight:600; white-space:nowrap; } .spec-table .aux-start { border-left-width:2px; } @media (max-width:640px){ .spec-table { min-width:560px; } .spec-table th, .spec-table td { padding:6px; font-size:13px; } } Primary/Front Auxiliary/Rear C8 Radiators OEM DeWitts® OEM DeWitts® Style Single Pass Single Pass Double Pass Double Pass Flow Down Flow Down Flow Down Flow Down Flow Inlet Location Top Left/Right* Top Left/Right* Top Left/Right* Top Left/Right* Outlet Location Bottom Middle Bottom Middle Top Left/Right* Top Left/Right* Row Quantity 1 2 1 2 Tube Size 1.38 1.00 1.38 1.00 Core Width 17.33 16.96 10.28 10.53 Core Height 13.14 13.00 14.75 14.88 Overall Width 18.48 18.06 11.42 10.73 Core Thickness 1.38 2.25 1.38 2.25 Overall Thickness 2.36 2.75 2.36 2.75 Overall Height 17.18 17.42 17.35 17.62 Cooler Fluid Capacity 48 oz 76 oz 28 oz 48 oz *Dependent on LH or RH unit or installation*- All measurements are in inches (“) Specification Gains Front Radiators: 32-1139120R and 32-1139120L Base Models = 36% more surface cooling area on DeWitts Front Radiators Z51, Z06, ZL1 = 14% more surface cooling area on DeWitts Front Radiators Rear Radiators: 32-1139121M DeWitts compared to the stock Auxiliary cooler is a 22% surface area gain APPLICATION GUIDE Fronts: All 2020 – Present models Rears: 2020 – Present Z51, Z06, ZR1 (NO E-Ray, ZR1X, No convertibles) WHY ADD AN AUXILIARY RADIATOR 1. Prevent Heat Soak During Track UseThe C8, especially in spirited or track driving, can experience high under hood and engine bay temperatures. An auxiliary radiator helps dissipate that excess heat before it causes performance loss or potential damage. 2. Increase Cooling Capacity Without Full System OverhaulAdding a right rear (passenger-side) auxiliary radiator boosts cooling efficiency 3. Support Engine Modifications or Power AddersIf you’ve added power (e.g., turbo, supercharger, or tune), the factory cooling system may no longer be sufficient. An auxiliary radiator provides extra thermal margin to support increased output. 4. Improve Longevity and ReliabilityHeat is the enemy of reliability. Extra cooling helps protect critical systems like the transmission, engine, and cooling circuits from heat-related stress and premature wear. 5. OEM Integration with Aftermarket PerformanceDeWitts offers this auxiliary radiator with OEM-style fitment, meaning you get the performance benefits with a factory-like install.
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