DCT BMW Dual Mass Flywheel - E9X M3 DCT

Genuine BMW replacement flywheel for E90, E92, E93 M3 DCT. This is for the dual clutch 7 speed transmission, which was offered for 2008, 2009, 2010, 2011, 2012 and 2013 model year M3 coupe, sedan and convertible.

Modern BMWs use a dual mass flywheel (DMF) to dampen driveline vibrations and help make clutch operation smoother, but as many BMW owners realize, they don't last forever. Sachs, an OEM supplier to BMW, recommends replacing the DMF with every other clutch. But in some cases the clutch has been abused so much that damage extends to the flywheel. The DCT transmission programming is supposed to minimize clutch abuse but if the clutch adaption and engagement points have not been set properly the flywheel could be damaged. If you're planning a clutch job consider also buying a new flywheel to have on hand.

There are symptoms of BMW DMF failure and needs to be replaced: build-up of clutch material or damage to the clutch contact surface, excessive play between the two halves of the DMF (if the outer flywheel section can rotate more than 20mm in either direction), and grease leaking out from inside the flywheel assembly. A worn DMF does not just impact performance or clutch operation, it's a big safety issue as well. A DMF that breaks apart can be catastrophic to the transmission as well as dangerous to the driver and passenger.