The CSF 3937 is an OE-style direct-fit replacement radiator for the 2019-2022 Ram 3500 with the 6.7L Cummins turbo diesel High Output engine. 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 turbo diesel (High Output)
- Fitment: direct, factory location
- Part number: 3937
Vehicle Applications
Direct fit on the following (6.7L Cummins turbo diesel, High Output):
- 2019 Ram 3500
- 2020 Ram 3500
- 2021 Ram 3500
- 2022 Ram 3500
FAQ
What vehicles does the CSF 3937 fit?
The 2019-2022 Ram 3500 with the 6.7L Cummins turbo diesel High Output engine.
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.

