Audi A4 Quattro Pulleys


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 Fluidampr Steel Internally Balanced Damper 4 Bolt Hole Mounting Audi A4 Quattro 00-05 

Model Number: 551201   View Price

Each time the air/fuel mixture inside a cylinder is ignited, the combustion that occurs creates a torque spike that is applied to the crankshaft through the piston and rod. This torque spike is so severe that it not only turns the crankshaft, it actually twists the crankshaft ahead of its normal rotation and then the crankshaft rebounds. This twisting action is known as torsional vibration. When these torque spikes and forces get into phase with the natural frequency, critical torsional harmonic...
  
 Fluidampr Steel Internally Balanced Damper 6 Bolt Hole Mounting Audi A4 Quattro 05-09 

Model Number: 551211   View Price

Each time the air/fuel mixture inside a cylinder is ignited, the combustion that occurs creates a torque spike that is applied to the crankshaft through the piston and rod. This torque spike is so severe that it not only turns the crankshaft, it actually twists the crankshaft ahead of its normal rotation and then the crankshaft rebounds. This twisting action is known as torsional vibration. When these torque spikes and forces get into phase with the natural frequency, critical torsional harmonic...