This Arnott rear shock absorber fits both the left and right sides and includes an actuator and three VOSS air line fittings for connecting to the air spring. Arnott's exclusive design adapts the strut to the original OEM Audi air spring and Arnott's aftermarket air springs. Arnott recommends replacing these struts in pairs. Engineered & assembled in the USA. Please check the part number or contact us before ordering.