Super Damper - made by Greg Brown
Fits all 928's from 78 to 95. Replaces the harmonic damper on the front of the engine.
If the original damper is beginning to break down and shedding chunks of rubber, this is what you need. As the original damper disintegrates and potentially falls apart, its ability to absorb vibration is considerably diminished.
Fitting a new Super Damper will ensure a smooth engine with no harsh vibrations from that area.
An example of a failed damper is pictured below - check yours now.