CSF N55 Race-Spec Oil Cooler - F2X 2-Series | F3X 3-Series | F3X 4-Series
CSF N55 Race-Spec Oil Cooler - F2X 2-Series | F3X 3-Series | F3X 4-Series

CSF N55 Race-Spec Oil Cooler - F2X 2-Series | F3X 3-Series | F3X 4-Series

Regular price €562,95
Shipping calculated at checkout.

4 in stock



BMW N55 CSF Oil Cooler is an innovative 2-core in-series design. It is converted to a single-pass design with high pressure return line for optional flow. Secondary in-series backside cooler has an additional 5 rows of cooling for a ~40% increase in heat rejection.

CSF's Oil Cooler is World's 1st and only true "plug-and-play" upgraded engine oil cooler for the BMW N55 engine. Its "Drop-in fit" feature requires no modification to install. It accepts all attaching OEM components including oil-line connections, mounting brackets and shroud/ducting.


  • Made with CSF's AC condenser technology using a 1-row super-high pressure 26mm multi-channel microtube
  • High-density multi-louvered fin design for maximum surface area contact
  • Track tested and proven by Hittman Racing's M235iR endurance race car
  • BMW F20 135i(x) 5-Doors 11-16
  • BMW F21 M135i(x) 3-Doors 11-16
  • BMW F22 M235i(x) Coupe 12-16
  • BMW F23 M235i(x) Convertible 14-16
  • BMW M235i Coupe MS Sport 14-16
  • BMW F30 335i(x) Sedan 11-15
  • BMW F30 Hybrid 3 Sedan 11-15
  • BMW F31 335i(x) Touring 11-15
  • BMW F34 335i(x) Gran Turismo 12-16
  • BMW F32 435i(x) Coupe 12-16
  • BMW F33 435i(x) Convertible 13-16
  • BMW F36 435i(x) Gran Coupe 13-16
  • Needs an additional ½ quart for proper fill-up during installation. OEM cooler is 7 quarts while CSF's upgrade Race-Spec N55 oil cooler required ~7.5 quarts to fill up properly.

Please contact us via the contact page form to start a return or exchange. The return/exchange process must be started within 1 week of delivery, after 1 week we will not be able to issue a refund/exchange. A 20% restocking fee will be applied to any return once the order has been shipped. For any questions regarding returns or exchanges feel free to contact us at sales@horizonmotorsport.com or reach out to us via the contact form and we would be happy to help.

You can find additional details on our return and exchange policy here.




Horizon Motorsport has one goal: to make our clients happy. We aim to provide the highest level of customer service and the highest caliber parts, all at the most competitive prices. Have a question or concern about a product we sell? Send us an email at sales@horizonmotorsport.com.


Every piece of carbon fiber that leaves our location in Los Angeles, CA is quality checked extensively prior to shipment. Every piece is backed up by our fitment and finish guarantee.


At Horizon Motorsport our mission is to provide unparalleled customer service. As a small business we pride ourselves on creating long lasting relationships with our customers who know that they can count on us for any of their BMW needs.


Horizon Motorsport was founded in 2019 in Los Angeles, CA by fellow BMW enthusiasts. We have experience with nearly all makes and models and have been actively involved in the Southern California BMW scene for over 3 years. Because of our unique insight into the BMW community, we choose to carry only the highest quality parts from the highest quality brands on the market.