Arnott now offers a completely rebuilt OE left rear air strut for Mercedes-Benz vehicles. Each aftermarket strut is painstakingly disassembled and rebuilt from the ground up. Arnott has worked directly with one of the largest seal manufacturers to design and test a nearly indestructible polyurethane seal you can expect to last for many years. The price per strut at your local dealership is a small fortune! Once again, the Arnott design is not only more efficient, it's also much more affordable! Each strut is backed by a Limited Lifetime Warranty.