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The CSF race-spec oil cooler for 2007–2013 BMW M3 (E9X) is built to control oil temperatures under street or track use and help avoid overheating-related drivability issues. It installs as a drop-in unit accepting factory oil-line connections and uses a dual-pass high-performance core for greater cooling capacity than single-pass OEM units. CSF's design targets reliable oil temps during sustained hard driving to protect engine performance.
CSF 07-13 BMW M3 (E9X) Race-Spec Oil Cooler
