The CSF 3944 is an OE-style direct-fit replacement radiator for the 2019-2022 Ram 2500/3500 with the 6.7L Cummins (non-HO). It uses an aluminum core with OE-style plastic tanks and installs in the factory location with no modifications, as a direct replacement for the original radiator.
- Type: OE-style replacement radiator
- Construction: aluminum core, plastic tanks
- Engine: 6.7L Cummins (non-HO)
- Fitment: direct, factory location
- Part number: 3944
Vehicle Applications
Direct fit on the following (6.7L Cummins (non-HO)):
- 2019 Ram 2500
- 2020 Ram 2500
- 2021 Ram 2500
- 2022 Ram 2500
- 2019 Ram 3500
- 2020 Ram 3500
- 2021 Ram 3500
- 2022 Ram 3500
FAQ
What vehicles does the CSF 3944 fit?
The 2019-2022 Ram 2500/3500 with the 6.7L Cummins (non-HO).
What is it made of?
An aluminum core with OE-style plastic tanks.
Is it a direct fit?
Yes. It installs in the factory location with no modifications.

