A4473280000 Universal Rear Air Spring Bag For Mercedes-Benz W447 W448 V Class

A4473280000 is an original-equipment-level dedicated rear air spring assembly for Mercedes-Benz new-generation commercial vehicles with W447/W448 chassis, compatible with high-end air suspension models including V-Class, Vito and Marco Polo camper vans. Commercial vehicles often operate under heavy load, passenger carrying and trunk weight conditions. The rear air springs undergo frequent telescopic compression, coupled with long-term high and low temperature changes, rainwater and dust erosion, which easily cause rubber aging, surface cracking, bulging, delamination, slow air leakage and rapid pressure relief of the original air springs.

Common vehicle failure symptoms include rear sagging after overnight parking, inconsistent left and right rear body height, frequent activation of the air compressor, abnormal suspension height, reduced chassis comfort and loose rebound on bumpy roads.

This rear air spring is 1:1 precisely replicated according to original W447/W448 rear air suspension parameters, with mounting hole positions, bellows telescopic stroke, pressure-bearing values and sealing structures fully compliant with OEM standards. Adopting multi-layer high-strength woven composite rubber material, it features aging resistance, high and low temperature resistance, tensile fatigue resistance and stable air tightness, completely solving the original vehicle’s common faults of air leakage and rear sagging. It supports non-destructive in-situ replacement without chassis modification or drilling, fully compatible with the original Airmatic air suspension system. After installation, the chassis height is accurate and shock absorption is soft, making it a core best-selling accessory for garage maintenance, bulk auto parts replacement and cross-border export business.