Genuine OEM Volkswagen Rear Coil Spring, part number 2Q0511121BQ. This coil spring is a critical component of the vehicle's rear suspension system, designed to support the vehicle's weight and absorb impacts from road irregularities. It is specifically for the left side of the rear axle. With a length of 0.34 meters and weighing 1.509 kg, this genuine OEM coil spring ensures factory-specified spring rates and material fatigue resistance, crucial for maintaining ride comfort, handling, and vehicle stability.