In addition to angular error correction and a damping function, the Hardy disk has another task: it provides acoustic decoupling of the driveline from the body and thus reduces noise.
A defective hard disk generates precisely these noises and vibrations, plus play during load changes. The latter makes for a dull rumble when starting off. A bent cardan shaft or a defective universal joint result in the worst case from a defective Hardy disk.
The Hardy disc is suitable for all 2.5L TFSI, such as RS3 and TTRS. New screws are of course also included.
