Left.SEDAN. Right.SEDAN. A Crush Sleeve that goes in between the Bushings and the Bushing Mounts of the Suspension Control Arm that prevents over torqueing of the bolt or fastener. without it, it could cause damage to the Suspension Control Arm or Crossmember. Connecting element to the body; allows Control Arm mobility. Rubber. Sleeve. Included with: Lower Control Arm.