Arnott's completely rebuilt OE Right Rear ABC (Active Body Control) strut for Mercedes-Benz AMG vehicles is painstakingly disassembled and rebuilt from the ground up. Arnott has worked directly with one of the largest seal manufacturers to design a nearly indestructible polyurethane seal which should last for many years. The Arnott design is not only more durable, it's also much more affordable! Each strut is backed by a Limited Lifetime Warranty. This part is for SL55 or SL65 AMG models ONLY.