Skip to content
303.02.0056-S Multi-circuit Protection Valves, Brake System

313 Views Updated

303.02.0056-S Iveco Compatible Multi-circuit Protection Valve

303.02.0056-S

Summary

This multi-circuit protection valve is designed for heavy commercial vehicle brake systems, specifically compatible with Iveco and Knorr-Bremse systems. It ensures precise pressure distribution across multiple pneumatic circuits to maintain braking integrity. Equivalent to OE Iveco 42566843S and Knorr-Bremse AE4561S.

Ready to Order
Get Information
Share
WhatsApp Facebook X LinkedIn

Compatible OEM Codes

  • KNORR-BREMSE
    • K048308N50 S
    • AE 4561 S
  • IVECO
    • 42566843 S

Description

What does a multi-circuit protection valve do?

This multi-circuit protection valve plays a critical role in the pneumatic braking system of heavy commercial vehicles. By partitioning the air supply into separate circuits, it prevents a total loss of braking power in the event of a leak in a single line. Built with heavy-duty grade materials, it ensures reliable performance under constant pressure fluctuations.

Vehicle and system compatibility

This component is compatible with Iveco vehicles and Knorr-Bremse systems. It is specifically engineered to meet the rigorous requirements of heavy commercial vehicle braking architectures, ensuring that air pressure is maintained where it is most needed for safe operation.

Installation and maintenance

When performing maintenance, technicians should inspect all connection ports and seals for signs of wear or leakage. Ensuring correct installation according to the vehicle's pneumatic layout is essential for maintaining optimal braking response and system stability.

Troubleshooting guidance

If a significant drop in pressure is observed in a specific circuit, this valve should be inspected as part of the troubleshooting process to ensure the integrity of the entire brake system.

OE cross-reference

303.02.0056-S (Multi-circuit Protection Valves Brake System) is the equivalent of the Iveco and Knorr-Bremse OE numbers. This part directly replaces Iveco OE number 42566843S. It also replaces Knorr-Bremse OE numbers AE4561S, K048308N50S.

Technical Specifications

Technical Specifications
Sensor-

Other OEMs

IVECO

  • 42566843 S

KNORR-BREMSE

  • K048308N50 S
  • AE 4561 S

Related Products

Repair Kits

Used In

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
IVECO
KNORR-BREMSE

FAQ

What is the function of a multi-circuit protection valve?
It divides the air supply into independent circuits so that a leak in one part of the system does not cause a complete loss of braking capability.
Is this valve compatible with Knorr-Bremse systems?
Yes, this component is designed to be compatible with Knorr-Bremse systems used in heavy commercial vehicles.
Which vehicle brands can use this part?
This part is specifically compatible with Iveco vehicles and their associated braking architectures.
What are common symptoms of a faulty protection valve?
Technicians may notice uneven pressure distribution across circuits or persistent air leaks within the pneumatic braking system.
What are the OE reference numbers of this part?
303.02.0056-S directly replaces Iveco OE number 42566843S. It also replaces Knorr-Bremse OE numbers AE4561S, K048308N50S.