This oil cooler from CSF Performance features an innovative 2-core in-series design that gives you 5 additional cooling rows for a 40 percent increase in heat rejection. The cooler core is made with CSF Performance's AC condenser technology which uses a 1-row super-high pressure 26mm multi-channel microtube for optimal oil flow. This is a drop-in unit that requires no modifications to install and accepts all OEM connections, brackets and ducting. After being track tested but Hittman Racing's M235iR endurance race car, this is the world's first and only true plug and play upgraded engine oil cooler for the BMW N55 engine.
Application: 2011–2016 BMW 135i(X) 5 Door F20 / M135i(X) 3 Door F21