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303.01.0039 Relay Valve, Brake System

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303.01.0039 Scania Compatible Relay Valve

303.01.0039

Summary

This high-strength relay valve is designed for heavy commercial vehicle brake systems. It features M22x1,5 and M16x1,5 port configurations and supports a maximum operating pressure of 10 BAR. Engineered to ensure rapid air pressure transfer for reliable braking performance in Scania applications. Equivalent to OE Scania 1411244 and WABCO 9730110100.

Product identifiers
EAN Code8683457009219
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Compatible OEM Codes

  • SCANIA
    • 2131071
    • 1411244
  • WABCO
    • 973 011 010 0

Description

What does a relay valve do?

This relay valve serves as a critical component within the compressed air brake system of heavy commercial vehicles. It functions by facilitating rapid air pressure transfer triggered by a pilot signal, ensuring that braking force is applied precisely and promptly to the brake chambers. Built with high-strength components, it maintains consistent performance under demanding operational conditions.

Vehicle and system compatibility

This component is specifically designed to be compatible with Scania trucks and other heavy-duty vehicle applications. It serves as a reliable replacement for parts used in Scania systems and is also compatible with WABCO systems. This ensures seamless integration into existing pneumatic brake architectures.

Installation and maintenance

For proper installation, technicians should verify that all port connections—specifically the M22x1,5 and M16x1,5 fittings—are secured to prevent air leaks. Regular inspection of the valve body and connection points is recommended to maintain optimal pressure delivery within the 10 BAR limit.

Troubleshooting guidance

When replacing this unit, ensure the new valve matches the existing pneumatic circuit requirements to maintain system integrity.

OE cross-reference

303.01.0039 (Relay Valve Relay Valves) is the equivalent of the Scania and WABCO OE numbers. This part directly replaces Scania OE numbers 1411244, 2131071. It also replaces WABCO OE number 9730110100.

Technical Specifications

Technical Specifications
Port 1M22x1,5
Port 2M22x1,5
Port 3M22x1,5
Port 4M16x1,5
PressureMAX 10 BAR

Other OEMs

SCANIA

  • 2131071
  • 1411244

WABCO

  • 9730110100
  • 973 011 010 0

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
SCANIA
WABCO

FAQ

What is the primary function of this relay valve?
It facilitates rapid air pressure transfer triggered by a pilot signal, ensuring efficient braking response in heavy commercial vehicles.
Which vehicle brands is this part compatible with?
This component is designed for use in Scania trucks and is also compatible with WABCO systems.
What are the technical port specifications?
The unit features three M22x1,5 ports and one M16x1,5 port, supporting a maximum operating pressure of 10 BAR.
How can I identify if a relay valve needs replacement?
Technicians should look for signs of air leaks at the ports or inconsistent braking response caused by delayed pressure transfer.
What are the OE reference numbers of this part?
303.01.0039 directly replaces Scania OE numbers 1411244, 2131071. It also replaces WABCO OE number 9730110100.