Arnott's exclusive premium shock for the Lincoln Navigator and Ford Expedition delivers control, stability, handling, and comfort. Arnott's new exclusive aftermarket part design adapts the Lincoln Navigator or Ford Expedition shocks to the original OEM air spring and Arnott's aftermarket air spring. The OE shock will cost you a great deal more at your dealership! Arnott recommends replacing Lincoln Navigator or Ford Expedition shocks in pairs. Features: Improved Ride and Handling CNC-Machined Adapters New O-rings Included Fits OEM or Aftermarket Air Springs