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