Dual Mass Flywheel - BMW 1 / 3 / 5 / X3 / Z4 Series - Various Models

Dual Mass Flywheel - BMW 1 / 3 / 5 / X3 / Z4 Series - Various Models

BMW Part Number: 21 20 7 573 785 / 21 20 7 569 974 / 21 20 7 556 565 / 21 20 7 541 150

Brand: LUK (German O.E.M)

Fitment: Complete

To Fit the following Models:

E81 1-Series 3-Door 130i - All Models

E82 1-Series Coupe 125i - All Models

E87 1-Series 5-Door 130i - All Models

E87 LCI 1-Series 5-Door 130i - All Models

E88 1-Series Cabrio 125i - All Models

E90 3-Series Sedan 325i - N52 & N52N All Models

E90 3-Series Sedan 330i - N52 & N52N All Models

E90 LCI 3-Series Sedan 323i - All Models

E90 LCI 3-Series Sedan 325i - N52N All Models

E90 LCI 3-Series Sedan 330i - N52N All Models

E91 3-Series Touring 325i - N52 & N52N All Models

E91 LCI 3-Series Touring 325i - N52N All Models

E92 3-Series Coupe 325i - N52N All Models

E92 3-Series Coupe 330i - N52N All Models

E92 LCi 3-Series Coupe 325i - N52N All Models

E92 LCI 3-Series Coupe 330i - N52N All Models

E93 3-Series Cabrio 330i - N52N All Models

E93 LCI 3-Series Cabrio 330i - N52N All Models

E60 5-Series Sedan 523i - All Models

E60 5-Series Sedan 525i - N52 All Models

E60 5-Series Sedan 530i - N52 All Models

E60 LCI 5-Series Sedan 523i - N52N All Models

E60 LCI 5-Series Sedan 525i - N52 All Models

E60 LCI 5-Series Sedan 530i - N52 All Models

E83 X3 Series LCI - All Petrol Models

E85 Z4 Series Roadster 2.5i - N52 All Models

E85 Z4 Series Roadster 2.5 Si - All Models

E85 Z4 Series Roadster 3.0 Si - All Models

E89 Z4-Series Roadster 23i - All Models

E89 Z4-Series Roadster 30i - All Models

A glance at the benefits of the Luk dual mass flywheel

• Top driving comfort
• Absorbs vibrations
• Prevents noise
• Enables comfortable, low-revs driving
• Saves fuel
• Relieves crankshaft and gearbox

This all makes the LuK dual mass flywheel the ideal solution.
With one drawback: the higher the mass reactance of the vibrating masses, the more excessive the resonance increase and associated torque peaks. With the dual mass flywheel, this would be easily perceived when starting and stopping the engine; much more easily than with a conventional clutch system. Additionally: the smaller flymass of the engine has less of a stabilising effect on the speed fluctuation of the engine.

Thanks to decades of experience in clutch building, the LuK specialists were able to find an excellent solution to this problem. An additional damping device effectively prevents resonance overload. In normal operation, however, this additional damping device has no function and the torsional vibrations of the engine are filtered out by spring dampers.

Friction and spring rate – the correct ratio is important.
For optimal vibration isolation and soft resonance passage when starting and stopping the engine, the ratio between friction and spring rate must be optimal. The length of the springs is a key factor: The softer a spring, the more efficiently vibrations are isolated. The extra-long springs of the latest generation of dual mass flywheels significantly reduce the spring rate compared to a first generation dual mass flywheel. In routine driving operations, excessive resonance increases are kept almost completely away from the gearbox