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CSF 3944 Radiator
| Brand | CSF 3944 |
|---|---|
| Core Thickness | 1 5/8 |
| Core Width | 20 5/16 |
| Core Material | Aluminum |
| Tank Material | Plastic |
| Core Length | 33 3/8 |
| Inlet Diameter | 1 15/16 left |
| Outlet Diameter | 1 15/16 right |
| Down Flow Or Cross Flow Type | Cross flow |
| Box Height (in) | 8 1/4 |
| Box Length (in) | 44 5/8 |
| Box Weight (lbs) | 21 |
| Box Width (in) | 23 3/4 |
| Hazardous Material | No |
| Inlet Length (in) | 20 7/8 |
| Inlet Width (in) | 2 3/16 |
| No. Of Rows | 2 |
| Oil Cooler (in) | No |
| Outlet Length (in) | 20 7/8 |
| Outlet Width (in) | 2 3/16 |
| Radiator Cap Supplied | No |
| Tech Note | O.e.m. style plastic tank & aluminum core. upgraded heavy duty co |
| Fits | Ram · 12 vehicles |
Heavy-duty core. 17% thicker 2-row aluminum core improves cooling capacity.
Cross-flow design. Helps move coolant efficiently through the radiator.
OEM-style construction. Plastic tanks and aluminum core mirror the original layout.
Cross-references BBB Industries 13871, Mopar 68322491AA and Partslink Numbering System CH3010391 for the same application. See all 3.
Heavy-Duty Cooling for Ram 2500 and 3500
CSF 3944 is an OE-style radiator built with a plastic tank and aluminum core for 2019-2024 Ram 2500 and Ram 3500 trucks. It uses a 2-row cross-flow design with an upgraded heavy-duty core to improve cooling capacity over the original 1-row layout.
Fits 2019-2024 Ram 2500, N/A. Fits 2019-2024 Ram 3500, N/A.
Key Features
- Part number 3944 radiator for Ram heavy-duty truck applications
- OE-style plastic tank and aluminum core construction
- 2-row cross-flow design for increased cooling surface area
- 17% thicker 42mm core versus OEM 36mm 1-row core
- Left inlet and right outlet configuration
- Core dimensions: 33 3/8 in. length, 20 5/16 in. width, 1 5/8 in. thickness
- Manufactured by CSF, with ISO/TSO-certified factory processes
Detailed Description
CSF 3944 is engineered as a direct-fit radiator for Ram 2500 and Ram 3500 models from 2019 through 2024. The aluminum core and plastic tank design follows an OE-style layout while the upgraded heavy-duty 2-row core adds thickness for improved heat rejection in demanding towing, hauling, and daily driving conditions. This radiator is cross-flow configured with a 1 15/16 in. inlet on the left and a 1 15/16 in. outlet on the right. CSF states its radiators are developed to performance standards and validated through wind-tunnel testing, supporting consistent cooling performance across real-world use. This part cross-references Mopar 68322491AA and BBB Industries 13871 for the same application.
Common Issues This Radiator Can Address
- Overheating under load in Ram 2500 and Ram 3500 trucks
- Reduced cooling efficiency from a worn or clogged factory radiator
- Coolant temperature rise during towing or stop-and-go driving
- Leaks or tank deterioration associated with aging radiator assemblies
- Need for an OE-style replacement with a thicker heavy-duty core
Installation Notes and Tips
Verify radiator dimensions, inlet and outlet orientation, and vehicle application before installation. This radiator does not include a radiator cap. Inspect hoses, clamps, and surrounding cooling-system components during replacement to help ensure proper sealing and airflow. Confirm fitment for 2019-2024 Ram 2500 and 2019-2024 Ram 3500 before ordering.
Quality Assurance
CSF manufactures radiators in ISO/TSO-certified facilities and validates cooling performance during development. The brand has supplied radiators worldwide for more than 50 years and produces a broad range of OE-style and performance cooling components.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2024 | Ram | 2500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
| 2024 | Ram | 3500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
| 2023 | Ram | 2500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
| 2023 | Ram | 3500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
| 2022 | Ram | 2500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
| 2022 | Ram | 3500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
| 2021 | Ram | 2500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
| 2021 | Ram | 3500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
| 2020 | Ram | 2500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
| 2020 | Ram | 3500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
| 2019 | Ram | 2500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
| 2019 | Ram | 3500 | 6.7L | L6 | DIESEL | N/A | Upgraded Heavy Duty 16% Stronger Core |
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