Home / Bus / Rear Air Bag – IRIS Bus Rear Air Bag – IRIS Bus O.E. refs = SZ 135-19, SZ135-19 P02, SZ13519P02 Category: Bus Description Description Rear Air Bag Assembly for Iris Bus. Related products AIR BRAKE 410925 DENNIS Drag Link – DENNIS DART 610101-5 DENNIS Track Rod End R.H.T. – Female Cranked 406861 DENNIS Javelin U-Bolt – Rear