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 $599.00
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.

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.


Orders typically ship in 1-2 business days from our location in Los Angeles, CA. Transit time usually ranges from 3-5 business days, depending on where you are located. We offer worldwide shipping, if you need live outside of North America, shoot us an email and we would be happy to give you a quote!

Creating life-long customers.

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. At Horizon Motorsport our mission is to provide a unparalleled customer experience to keep our customers coming back.

A Company Owned By Fellow Enthusiasts.

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. Our unique insight and experience with the BMW community and other high end European-oriented brands gives us the knowledge and ability to stock only the highest quality parts from the highest quality brands.