2133200125 Mercedes Benz E Class W213 Air Suspension Air Spring Rear Air Spring Repair Bag Our rear air spring repair bellow 2133200125 is a reliable aftermarket replacement component engineered for the original air suspension system of Mercedes-Benz E-Class W213 chassis. Factory rear air springs on Mercedes W213 often develop rubber aging, cracking and gradual air leakage after long-term use. These failures cause rear-end sagging, uneven ride height, suspension warning