Flywheels are a vital componant in the tranmission system of your vehicle, transfaring engine power through to your gearbox. If they are not functioning 100% as a result of damage or wear there will be excessive vibration felt throught the vehicle while driving as well as at idle. A change in engine noise can be heard when the clutch pedal is pressed and released.
Match up your vehicle spec (Make, Model, Year and Engine Type) with the information found here to find the right flywheel for you.