This product is a set of coil springs for vehicle suspension, part of the BILSTEIN brand with manufacturing code 46-338969. It is a key spare part for the proper functioning of the chassis, ensuring the vehicle is maintained at the desired height and absorbs unevenness of the terrain. The springs in this set are designed to work in synergy with the shock absorbers, being components for gas-charged systems within the BILSTEIN range. This means compatibility with corresponding shock absorbers that use gas filling for better response and stability must be observed during installation and operation.