Arnott's aftermarket front air spring A-2575 for Mercedes-Benz 06-11 ML-Class (W164) & 07-12 GL-Class (X164) SUVs with AIRMATIC (with or without ADS) and including AMG, enables customers to economically replace just the dry rotted spring of their current OE strut. Arnott's design features a unique stamped steel upper cap and lower piston, heavy duty crimping rings, bump stop and seal along with a Continental ContiTech air sleeve. The new replacement air spring fits either the left or right side and now comes completely assembled for a fast, easy, installation. Arnott's new Mercedes-Benz air spring is designed and assembled in the USA and boasts a more comprehensive design, providing your SUV with superior strength and handling both on and off road.