BMW 135i (2011-2026) F20 CSF Race-Spec Oil Cooler (N55)

The CSF Race-Spec Oil Cooler is a direct upgrade for the N55-powered BMW 135i (F20). Its innovative 2-core in-series design adds a secondary backside cooler for roughly 40% more heat rejection, while retaining a true drop-in fit that accepts all OEM oil-line connections, brackets and ducting.

Key Features

• 2-core in-series system with secondary backside cooler
• ~40% increase in heat rejection
• Additional 5 rows of cooling
• 1-row 26mm multi-channel microtube, high-density multi-louvered fins
• Single-pass design with high-pressure return line
• Drop-in plug-and-play fit, no modifications required
• Accepts all OEM oil-lines, brackets and shroud/ducting
• Track tested by Hittman Racing's M235iR endurance car

Vehicle Compatibility

Compatibility: BMW 135i (F20, F21, F22, F23, F30, F31, F32, F33, F34) 2011-2026; BMW M135i (F20, F21, F22, F23, F30, F31, F32, F33, F34) 2011-2026; BMW M235i (F20, F21, F22, F23, F30, F31, F32, F33, F34) 2011-2026; BMW 335i (F20, F21, F22, F23, F30, F31, F32, F33, F34) 2011-2026; BMW 435i (F20, F21, F22, F23, F30, F31, F32, F33, F34) 2011-2026. Confirm your exact build or chassis code with our team before ordering.

Why Buy from Euroflow

Euroflow supplies genuine CSF Radiators performance parts with fast, free Australia-wide shipping and expert fitment advice. Questions on compatibility? Contact our team before you buy.