Genuine OEM Volkswagen Gas-Filled Hydraulic Shock Absorber, part number 12E513025B. This shock absorber is a critical component of the vehicle's suspension system, responsible for controlling spring oscillations and maintaining tire contact with the road. It is typically mounted on the rear axle assembly. Genuine OEM shock absorbers are engineered with precise damping characteristics and robust construction to provide superior ride quality, stability, and long service life.