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CSF 3739 Radiator
| Brand | CSF 3739 |
|---|---|
| Core Thickness | 1 1/4 |
| Core Width | 21 11/16 |
| Core Material | Aluminum |
| Tank Material | Plastic |
| Core Length | 27 1/2 |
| Inlet Diameter | 1 1/2 left |
| Outlet Diameter | 1 3/4 right |
| Down Flow Or Cross Flow Type | Cross flow |
| Radiator Core Row Quantity | 1 |
| Cap Included | No |
| Box Height (in) | 8 1/16 |
| Box Length (in) | 38 3/4 |
| Box Weight (lbs) | 16 |
| Box Width (in) | 25 11/16 |
| Csf Cap Number | 4515 |
| Hazardous Material | No |
| Inlet Length (in) | 22 11/16 |
| Inlet Width (in) | 1 5/8 |
| Outlet Length (in) | 22 11/16 |
| Outlet Width (in) | 1 5/8 |
| Tech Note | O.e.m. style plastic tanks & aluminum core. |
| Fits | Ram · 10 vehicles |
OE-style design. Plastic tanks and an aluminum core match the original layout.
Cross-flow construction. Promotes efficient coolant movement through the radiator.
Wind tunnel tested. Validated in the lab for cooling performance.
Cross-references Mopar 68232750AB, OSC 13494 and CH3010376 for the same application. See all 3.
CSF 3739 Radiator for Ram HD Cooling Service
CSF radiator part number 3739 is an OE-style replacement radiator built with an aluminum core and plastic tanks. It is engineered for cross-flow cooling performance and direct fitment on select Ram 2500 and Ram 3500 trucks from 2014-2018.
Key Features
- Aluminum core with plastic tanks for OE-style construction
- Cross-flow design with a 1-row core
- Core thickness: 1 1/4 in.
- Core size: 27 1/2 in. length x 21 11/16 in. width
- Inlet: 1 1/2 in. left
- Outlet: 1 3/4 in. right
- No radiator cap included
- Tech note: O.E.M. style plastic tanks and aluminum core
Detailed Description
Built for Ram 2500 and Ram 3500 cooling system service, CSF 3739 follows an OE-style layout with a cross-flow aluminum core and plastic end tanks. The radiator is designed around the listed inlet and outlet locations, making it a direct replacement choice for trucks that need a factory-style radiator configuration. CSF manufactures radiators to high-performance standards and validates cooling performance through lab testing, with production experience across a wide range of vehicle applications. This part cross-references Mopar 68232750AB and OSC 13494 for the same application.
What This Radiator Helps Address
- Coolant leaks from cracked or aged plastic tanks
- Reduced cooling efficiency from a restricted or damaged core
- Overheating caused by internal corrosion or blockage
- Temperature instability during towing or heavy-duty use
- Fitment issues when replacing a factory-style Ram radiator
Installation Notes and Tips
Verify inlet and outlet orientation before installation: inlet is 1 1/2 in. left and outlet is 1 3/4 in. right. Confirm core dimensions and mounting layout against the original radiator on your Ram 2500 or Ram 3500 before removal. Transfer any required OE components from the original assembly as needed, and inspect hoses, clamps, and the cooling fan system during service.
Quality Assurance
CSF radiators are manufactured in ISO/TSO-certified facilities and are engineered for cooling performance validation. Part number 3739 is built to OE-style specifications for 2014-2018 Ram 2500 and 2014-2018 Ram 3500 applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2018 | Ram | 2500 | 5.7L | V8 | N/A | — |
| 2018 | Ram | 3500 | 5.7L | V8 | N/A | — |
| 2017 | Ram | 2500 | 5.7L | V8 | N/A | — |
| 2017 | Ram | 3500 | 5.7L | V8 | N/A | — |
| 2016 | Ram | 2500 | 5.7L | V8 | N/A | — |
| 2016 | Ram | 3500 | 5.7L | V8 | N/A | — |
| 2015 | Ram | 2500 | 5.7L | V8 | N/A | — |
| 2015 | Ram | 3500 | 5.7L | V8 | N/A | — |
| 2014 | Ram | 2500 | 5.7L | V8 | N/A | — |
| 2014 | Ram | 3500 | 5.7L | V8 | N/A | — |
| No rows match your filter. | ||||||