Genuine OEM Cupra Rear Axle Coil Spring, part number 1EA511103Q. This coil spring is a vital part of the rear axle suspension system, designed to support the vehicle's weight and absorb impacts from the road surface, ensuring a smooth ride. It is manufactured from high-tensile steel to provide consistent performance and durability. Genuine OEM coil springs are engineered with precise spring rates and dimensions to maintain optimal vehicle handling and ride quality.