Front Air Suspension Strut with Multi-layer Reinforced Rubber Air Spring and Precision Hydraulic Damper Core for Audi A8 D5 4N4 616 039F Our air suspension strut OE 4N4616039F is a high-performance aftermarket replacement air shock absorber designed specifically for Audi A8 D5. This integrated unit combines hydraulic damper, multi-layer reinforced air spring bellow, dust protection boot and lightweight aluminum housing. It is a ready-to-install assembly to replace original