CSF High Performance Race Spec Engine Oil Cooler for BMW N55 — M135i, M235i, 335i, 435i incl. xDrive
Struggling with high N55 engine oil temperatures on track days or spirited drives in warm weather. The CSF High Performance Race Spec Engine Oil Cooler is the proven BMW N55 oil cooler upgrade that keeps temperatures in check, adds reliability and lets you drive harder for longer. N55 owners regularly see 130°C plus on the factory cooler and even 140°C plus if care is not taken. Reducing oil temperature protects bearings and turbochargers, improves consistency and extends engine life.
We have installed this CSF oil cooler on our own and customer N55 cars, and feedback has been excellent. Lower oil temps, faster recovery between laps and real peace of mind for both stock and tuned N55 setups.
Why choose the CSF N55 Oil Cooler upgrade
- Innovative 2-core in-series design for superior heat rejection
- Converted to an M2 style single-pass design with a high-pressure return line
- High-density multi-louvred fin design for maximum surface area and cooling efficiency
- Drop-in fit requiring zero modifications, true plug-and-play installation
- Track tested and race proven on Hittman Racing’s M235iR endurance race car
- Typical 5°C to 10°C reduction in engine oil temperature depending on ambient and load conditions
- Direct replacement for OEM part number 17217618360
Fitment
Fits BMW N55-engined models:
- M135i
- M235i and M235iR
- 335i
- 435i
- Includes xDrive variants
What you gain
Better temperature control for the N55 under continuous high load, improved reliability for track days and spirited road use, and stable performance in high ambient conditions. This CSF BMW oil cooler upgrade is ideal for anyone seeking a dependable, race-bred cooling solution without cutting or custom fabrication.
Installation and support
Professional fitting available at Nforcd in Warwickshire. To book installation or request a quote, email Sales@nforcd.com.
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