Main Crank Pulley - Mitsubishi Lancer Evolution I CD9A This is a 2 part pulley glued together with rubber. The rubber is there to provide engine damping ie to stop vibration. However the rubber does perish and the pulley can fall apart destroying the belts. See HERE & HERE Choose from an Aftermarket Item or Genuine Mitsubishi Mitsubishi Part Number MD376609 MD300516