Rubber Insulator for Propshaft Bearing - Mitsubishi Lancer EVO I CD9A These are a steel washer with a rubber surround, the rubber can perish and allow movement of the propshaft bearing. This can cause shaking/vibration and a wump wump wump sound. On EVO's 1, 2, & 3 There are Four of these used on the propshaft bearing. See HERE Mitsubishi Part Number MB837586
