FLUIDAMPR Performance Diesel. Fluidampr is a torsional vibration damper. Its function is to provide durability by controlling destructive torsional vibration. A side benefit to vibration control is releasing lost torque and horsepower through greater efficiency.
The outer housing mounts to the crankshaft. When combustion triggers rapid twisting and rebounding (torsional vibration), the outer housing and inner inertia ring will move in-and-out of phase with each other. The motion of the inner inertia ring through the silicone creates shear. Shear eliminates unwanted vibration.
Not all viscous dampers are the same. They may be referred to as a fluid damper, but they are not a Fluidampr brand performance damper. Always look for the official 'The Original' Fluidampr logo when purchasing Fluidampr performance dampers are only available through reputable performance parts retailers, jobber shops and distributors.