Powerflex Polyurethane Bush kit for BMW E70 X5 (2006-2013) Rear Subframe Front Bush Insert - PFR5-1421 - This is an Insert and fits into the original bush which reduces the subframe movement. It fits into OE bush part number 33316784940. - Bush Size: - PRICE IS PER CAR KIT, NOT per bush. Powerflex usually price their bushes singly, but we have combined the QTY and price to keep it simple for you!