Cadillac BLS (2005 - 2010) Rear Upper Arm Outer Bush 47mm - PFR80-1211BLK Replaces the 47mm spherical bush. For arms with a 38mm rubber bush, use PFR80-1217 - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!