Unity 15-513100 Rear Air Spring 2003-2009 Mercedes E-Class

Rear Air Spring for E-Class 2003-2009

The Unity 15-513100 rear air spring fits 2003-2005 E320, 2006-2009 E350, 2004-2006 E500, 2006 E55 AMG and 2007-2009 E63 AMG models. It is a vehicle-specific OE-style replacement assembly engineered for superior fit and trouble-free installation. The part restores factory ride height and delivers a stable, comfortable ride. It is intended for owners and technicians servicing the air suspension on these Mercedes-Benz vehicles.

Sustained Load Behaviour

The air spring is built to maintain consistent pressure and damping characteristics over extended driving periods. It supports the vehicle weight continuously without the sag or leakage that develops in worn units. The assembly restores the original ride height under constant load, keeping handling predictable on long journeys. Replacing both rear units together ensures balanced performance side to side.

Build Quality and Mounting

The unit measures 12.6 x 7.87 x 7.87 inches and weighs 4.41 lbs, matching the original mounting points for direct bolt-on fitment. OE-style construction uses materials selected for long-lasting reliability and resistance to road debris. The design aligns with factory plumbing and electrical connectors, so no adaptation is required during installation. It is covered by the manufacturer's warranty.