CSF BMW N55 F20 F21 F22 F23 F30 F31 F32 F33 F34 F36 High-performance Race-spec Engine Oil Cooler Upgrade
Perfect for M135i, M235i, 335i and 435i owners who are battling high oil temperatures on the BMW N55 engine. If you track your car, drive it hard on fast road, or simply want rock-solid reliability in hot weather, this CSF Oil Cooler Upgrade is the proven solution to keep N55 oil temps under control and protect your engine.
BMW N55 engines are known to run hot under sustained load, with many owners seeing oil temperatures around 130°C and higher. The CSF 8145 N55 oil cooler delivers a genuine performance cooling upgrade, offering approximately 5 to 10°C reduction in engine oil temperature depending on ambient and load conditions. We have installed and used this cooler ourselves and for many customer builds, and the feedback is consistently positive. Lower oil temperatures, more consistent performance, more confidence on track and better engine longevity.
Search terms customers use for this product include: BMW N55 oil cooler, BMW M135i oil cooler upgrade, BMW M235i oil cooler kit, BMW 335i oil cooler, BMW 435i oil cooler, F20 oil cooler, F22 oil cooler, F30 oil cooler, F32 oil cooler, CSF 8145, N55 oil cooler UK, BMW F-series oil cooler upgrade. If you are looking for a drop-in, race-proven, high-performance oil cooler for your N55, this is it.
Why choose the CSF N55 Oil Cooler
- Race-proven design tested on Hittman Racing’s M235iR endurance race car.
- Lower oil temps by approximately 5 to 10°C to help safeguard engine components.
- Drop-in fit requiring zero modifications. Direct replacement for OEM #17217618360.
- High-efficiency construction with high-density multi-louvred fins for maximum heat rejection.
- Innovative 2 core in-series layout converted to an M2 style single-pass design with a high-pressure return line for improved efficiency.
- Built by CSF Radiators and backed by the CSF Lifetime Warranty for peace of mind.
What you get
- CSF High-performance Race-spec Engine Oil Cooler
- Innovative 2 core in-series design
- M2 style single-pass configuration with high-pressure return line
- High-density multi-louvred fin core
- Direct-fit hardware to enable a true drop-in installation
Fitment and compatibility
Designed for BMW N55 F-series models. Compatible with xDrive where noted.
- BMW 1 Series N55 F20 135i(x) 2011–2016
- BMW 1 Series N55 F21 M135i(x) 2011–2016
- BMW 2 Series N55 F22/F23 M235i(x) 2012–2016
- BMW 2 Series N55 F22/F23 M235i Racing MS BMW Sport 2012–2016
- BMW 3 Series N55 F30/F31 335i(x) 2011–2015
- BMW 3 Series N55 F34 GT 335i(x) 2012–2016
- BMW 4 Series N55 F32/F33/F36 435i(x) 2012–2016
If you are searching for a BMW N55 oil cooler upgrade for F20, F21, F22, F23, F30, F31, F32, F33, F34 or F36, this CSF 8145 kit is the direct, drop-in solution.
Part numbers and warranty
- CSF Part Number: 8145
- Replaces OEM: 17217618360
- Warranty: CSF Lifetime Warranty
Fitting and support
Professional fitting available at Nforcd in Warwickshire. For a fitting quote or any technical advice, email Sales@nforcd.com. This is a straightforward, direct replacement oil cooler designed to install without modifications.
Compatibility check
To ensure perfect fitment for your BMW N55, we run a compatibility check before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout and we will confirm the correct part for your car.
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