303.02.0112.01 Multi-circuit Protection Valve Kit Replacement

What does a repair kit do?

This repair kit serves as a comprehensive component set for overhauling the multi-circuit protection valve within the pneumatic brake system of heavy commercial vehicles. By replacing internal elements, this kit restores the critical function of managing several air lines from a single housing, ensuring that air pressure is correctly prioritized and distributed between service, parking, and auxiliary circuits.

Vehicle compatibility and systems

This component is designed for use in Iveco trucks and is compatible with WABCO systems. It allows workshop technicians to restore internal sealing and circuit separation efficiently, ensuring the vehicle's braking safety remains intact without the need to replace the entire valve assembly.

Installation and maintenance guidance

During maintenance, technicians should inspect the existing valve housing for any signs of damage or debris. Replacing the internal seals and diaphragms helps prevent pressure drops in critical circuits and ensures balanced air supply across the braking system. Check the compatibility list to ensure proper fitment.

System reliability

A properly maintained protection valve is essential for preventing total brake system failure in the event of a single-line leak.

OE cross-reference

303.02.0112.01 (Multi-circuit Protection Valve Repair Kit) is the equivalent of the WABCO OE number. This part directly replaces WABCO OE number 9347059232.