The 42mm 2-Row aluminum core is a massive improvement over the factory core. A thicker core, second cooling row, and increased fluid capacity drastically improves the amount of heat the system can absorb and dissipate. CSF's Exclusive B-Tube Technology increases the heat transfer by approximately 15% over regular oval welded tubes. In addition, the super-efficient multi-louvered fins maximize airflow through the core for the best possible cooling performance.
Features
- Triple Pass Flow Configuration Allows Coolant to Flow Across the Core Three Times Before Exiting for Lowest Outlet Temperatures Possible
- 6.5mm Tall Ultra Efficient Fins with a Multi-Louvered Design for Maximum Surface Area Contact
- True Plug-and-Play "Drop-in Fit" Installation Requires Absolutely No Modifications
- Cooling Tubes with CSF's Exclusive B-Tube Technology
- 100% All Aluminum TIG-Welded Construction
- 2-Row - 42mm Ultra-High-Performance Core
- CNC Machined Mounting Pins and Brackets
- Individually Leak and Pressure Tested
- OEM Style Inlet/Outlet
A radiator passes hot engine coolant through thin tubes and fins so its heat moves into the air flowing through; its hoses, cap and overflow bottle carry, pressurize and hold that coolant.
Listed for 1 vehicle: the fitment table on this page shows each year, make and model it fits.
CSF 16-18 Ford Focus RS Radiator
Vehicle fitment
Estimated fitment — verify before purchase| Years | Make | Model |
|---|---|---|
| 2016–2018 | Ford | Focus |
Specifications
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | CSF |
| Part number | CSF7239 |
| Category | Cooling |

Worth adding
Useful in any truck — ships separately in its own box.
Related parts
More in Radiators.









