The Bilstein B4 Series (19-124551) gas pressure shock absorbers are engineered to restore the original ride quality and safety of your Mercedes-Benz M-Class. This OE Replacement Twintube shock absorber ensures maximum comfort and constant damping power under any load. Key features include high traction and precise handling. Technical parameters: Front Axle, Top pin, Bottom eye, Twin-Tube design. This item is sold as a single unit (1 pc). If purchased as a kit, the set includes: Shock Absorber (19-124551) - 1pc, Mounting Nut - 1pc, Bushing Set - 1pc.