Audi A8 / S8 A8 / S8 D4 (2010 - 2017) Transmission Mount Insert (Track) - PFF3-726BLK A small increase in NVH, usually at idle, should be expected when stiffening the connecting mount between the engine/transmission and chassis. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!