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

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.Features: 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 Fitment: 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