Audi A3 / S3 / RS3 A3 / S3 8L (1996-2003) Front Wishbone Rear Bush, Pattern Arm 21mm arm width - PFF85-410PA This bush is designed specifically to fit aftermarket arms with a hole depth of 21mm. For genuine OE arms that measure 23mm in depth, please use PFF85-410 - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!