Skip to content
303.01.0003 Relay Valve, Brake System

3942 Views Updated

303.01.0003 Relay Valve — WABCO Equivalent

303.01.0003

Summary

This high-strength relay valve features M22x1,5 VOSS and M16x1,5 VOSS ports, designed for reliable air pressure transfer in heavy commercial vehicle brake systems. It is compatible with WABCO systems and fits various heavy-duty applications. Equivalent to OE Alexander Dennis DP002130, DAF 1505150 and MAN 81521166067.

Product identifiers
EAN Code8699031064338
Ready to Order
Get Information
Share
WhatsApp Facebook X LinkedIn

Compatible OEM Codes

  • MAN
    • 81.52116-9067
    • 81.52116-6069
    • 81.52116-6068
    • 81.52116-6067
  • MERCEDES BENZ
    • 004 429 11 44
    • 004 429 06 44
  • WABCO
    • 973 006 001 0
  • SCANIA
    • 1935645
  • RENAULT TRUCKS
    • 5021170458
  • DAF
    • 1505150
  • ALEXANDER DENNIS
    • DP002130

Description

What does a relay valve do?

This relay valve plays a critical role in the pneumatic braking system of heavy commercial vehicles by ensuring rapid air pressure transfer triggered by a pilot signal. By facilitating quick response times, it helps the braking system engage effectively to maintain vehicle safety during deceleration.

Vehicle and system compatibility

This component is compatible with Mercedes-Benz, MAN, Scania, DAF, Renault Trucks, and Alexander Dennis vehicles. It is also designed to function within WABCO systems to ensure seamless integration into the existing pneumatic circuit.

Technical specifications and installation

Technicians should note the specific port configurations: Port 1 and Port 2 utilize M22x1,5 VOSS connections, while Port 4 is M16x1,5 VOSS. Ensuring these connections are secure and free of contaminants is vital for maintaining the maximum operating pressure of 10 BAR.

Maintenance and troubleshooting

Regular inspection of the valve mounting on the chassis can prevent air leaks and ensure consistent braking performance. Consult your authorized distributor to verify specific fitment for your fleet.

OE cross-reference

303.01.0003 (Relay Valve Relay Valves) is the equivalent of the Alexander Dennis, DAF, MAN, Mercedes-Benz, Renault Trucks, Scania and WABCO OE numbers. This part directly replaces Alexander Dennis OE number DP002130. It also replaces DAF OE number 1505150, MAN OE numbers 81521166067, 81521166068, 81521166069, 81521169067, Mercedes-Benz OE numbers 0044290644, 0044291144, Renault Trucks OE number 5021170458, Scania OE number 1935645 and WABCO OE number 9730060010.

Technical Specifications

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

Other OEMs

ALEXANDER DENNIS

  • DP002130

DAF

  • 1505150

MAN

  • 81521169067
  • 81521166069
  • 81521166068
  • 81521166067
  • 81.52116.6068
  • 81.52116.6067
  • 81.52116-9067
  • 81.52116-6069
  • 81.52116-6068
  • 81.52116-6067

MERCEDES BENZ

  • A0044291144
  • A0044290644
  • 0044291144
  • 0044290644
  • 004.429.1144
  • 004.429.11.44
  • 004.429.0644
  • 004.429.06.44
  • 004 429 1144
  • 004 429 0644
  • 004 429 11 44
  • 004 429 06 44

RENAULT TRUCKS

  • 5021170458

SCANIA

  • 1935645

WABCO

  • 9730060010
  • 973.006.001.0
  • 973 006 001 0

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
ALEXANDER DENNIS
DAF
MAN
MERCEDES BENZ
RENAULT TRUCKS
SCANIA
WABCO

FAQ

What is the function of this relay valve?
It facilitates rapid air pressure transfer within the pneumatic brake system when triggered by a pilot signal, ensuring timely braking action.
Which vehicle brands are compatible with this part?
This component is suitable for heavy commercial vehicles from Mercedes-Benz, MAN, Scania, DAF, Renault Trucks, and Alexander Dennis.
What are the technical port specifications?
The unit features two M22x1,5 VOSS ports (Port 1 and Port 2) and one M16x1,5 VOSS port (Port 4), supporting up to 10 BAR.
Can this be used in WABCO systems?
Yes, this relay valve is designed to be compatible with WABCO systems for reliable pneumatic performance.
What are the OE reference numbers of this part?
303.01.0003 directly replaces Alexander Dennis OE number DP002130. It also replaces DAF OE number 1505150, MAN OE numbers 81521166067, 81521166068, 81521166069, 81521169067, Mercedes-Benz OE numbers 0044290644, 0044291144, Renault Trucks OE number 5021170458, Scania OE number 1935645 and WABCO OE number 9730060010.