Knuckle bolt. Left.W/AWD. M12x33. PartQualifier: M12x33. Rear. Right.W/AWD. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Parking Brake Motor to it's Mounting point. Axle Hub Mounting Bolt. Part cannot be reused/reinstalled. Suspension Knuckle Bolt. Adjust Motor. Axle ing. Parking Brake Motor. Suspension.