Front Driver or Passenger Side New Non-Electronic Air Complete Strut Assembly (73R-18-F) by Suncore®. Quantity: 1 per Pack. This complete kit will replace all the required Air Suspension Parts in order to maintain great ride quality. You will be saving Time and Money by purchasing this complete replacement kit. The most common reason for an air strut failure is due to dry rotting of the air bag. This is something that happens over time, the air bag starts to deteriorate and causes leaks, when this happens the air bag can no longer hold air pressure.