CSF's all-aluminum front-mount heat exchanger targets the heat soak that plagues the S55-powered BMW F8X (M2 Competition/CS, M3, M4). Its dual-pass flow structure runs coolant across the core twice before exit for the lowest possible outlet temperature, using a 2-row 42mm B-Tube core and ultra-efficient 6.5mm multi-louvered fins. It's a true drop-in fit requiring no modifications and accepts all OEM components including the quick-connect hoses, mounting brackets, X-brace and air ducting. It includes a removable aluminum rock guard, an all-aluminum race-style drain plug and a 1-hour hand-polished mirror finish.
| Type | Front-mount air-to-water heat exchanger (dual-pass) |
| Material | All-aluminum |
| Core | 42mm 2-row (dual core), CSF B-Tube technology |
| Fins | 6.5mm multi-louvered |
| Inlet / Outlet | CNC-machined OEM-style quick-connect connections |
| Finish | Hand-polished mirror finish |
| Fit | Drop-in, no modifications; accepts OEM hoses, brackets, X-brace, ducting |
| OEM Replacement | 17112284608 |
| Included | Removable aluminum rock guard, all-aluminum race-style drain plug |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2014-2017,2019-2020 | BMW | i8 | Base |
| 2019-2021 | BMW | M2 | Competition |
| 2020 | BMW | M2 | CS |
| 2015-2018 | BMW | M3 | Base |
| 2015-2020 | BMW | M4 | Base |
| 2019-2020 | BMW | M4 | CS |
| 2016 | BMW | M4 | GTS |
