303.04.0021.07 Repair Kit for ECAS Solenoid Valves — WABCO compatible

What is an ECAS solenoid valve repair kit?

An ECAS solenoid valve repair kit is a service set designed to renew the worn elements inside the solenoid valve blocks of an electronically controlled air suspension system.

Compatible vehicles and engines

This kit is essential for maintaining the pneumatic suspension components that manage chassis height by filling and venting air bellows. It is compatible with various heavy commercial vehicles including Volvo (FH, FM, VNL, VHD models), Ford Trucks (Cargo series), Renault Trucks (Magnum, Premium, Kerax), and Mack (Pinnacle, Granite) trucks. It also fits vehicles from Mercedes-Benz, MAN, Scania, and other heavy-duty makes.

Maintenance and troubleshooting

When sealing elements age, symptoms such as air leaks, delayed level response, or sagging while parked may occur. Using this repair kit allows for the refurbishment of the valve block—including the plunger and diaphragms—without the need for a full unit replacement, reducing vehicle downtime.

Installation guidance

To ensure correct fitment, technicians should verify the system architecture and port configuration before installation. Always check the compatibility list to ensure this kit meets the specific requirements of your suspension system.

OE cross-reference

303.04.0021.07 (ECAS Solenoid Valve Repair Kit) is the equivalent of the WABCO OE number. This part directly replaces WABCO OE number 4728809412.