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The CSF transmission/oil cooler for 2007–2013 BMW M3 (E9X) is a plug-and-play unit that improves cooling efficiency by roughly 30% versus the OEM cooler. Built with microtube, high-density fin technology and an 11-channel dual-pass core, it can serve as a transmission oil cooler for DCT-equipped cars or an engine oil cooler for 6MT cars. The drop-in design accepts factory oil-line connections for simple installation.
CSF 07-13 BMW M3 (E9X) DCT Oil Cooler
