CSF BMW M3 Race Spec DCT/6 Speed Manual Gearbox Oil Cooler (E90/E92/E93)CSF Radiators BMW E9X M3 Race Spec Gearbox Cooler keeps gearbox oil temperatures consistently cool for prolonged periods of fast driving, such as when you're on track, PRODUCT SPECIFICATION Made with CSFs AC condenser technology using a 1 row super high pressure 26mm multi channel microtube Dual pass high performance core with 12 cooling tubes vs. OEM single pass with return pipe 6 tube design. High density multi louvered fin design. Drop in fit