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004 429 11 44 Relay Valve Compatible with Mercedes-Benz

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004 429 11 44 Compatible Relay Valve for Mercedes-Benz

303.01.0003

Summary

This heavy-duty relay valve is engineered for Mercedes-Benz brake systems. It features M22x1.5 VOSS and M16x1.5 VOSS port configurations with a maximum operating pressure of 10 BAR, ensuring reliable air pressure transfer for heavy commercial vehicle braking. Equivalent to OE Mercedes-Benz 0044291144.

Product identifiers
EAN Code8699031064338
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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 compressed air brake system by facilitating rapid air pressure transfer triggered by a pilot signal. Designed with high-strength components, it ensures the stability and responsiveness required for heavy commercial vehicle braking operations.

Vehicle compatibility and application

This component is compatible with Mercedes-Benz trucks and other heavy commercial vehicle applications. It is engineered to meet the rigorous demands of professional workshop environments through precise engineering and durable construction.

Technical specifications and installation

The valve is designed with specific port sizes, including M22x1.5 VOSS for primary connections and M16x1.5 VOSS for secondary ports, supporting a maximum pressure of 10 BAR. Technicians should ensure all connections are secure and check the pneumatic lines during installation to maintain system integrity.

Maintenance and troubleshooting

Regular inspection of the pneumatic connections and valve performance is recommended to prevent air leaks or delayed braking response in the vehicle's braking system.

OE cross-reference

303.01.0003 (Relay Valve Relay Valves) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number 0044291144.

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?
The relay valve facilitates rapid air pressure transfer within the compressed air brake system, triggered by a pilot signal to ensure efficient braking response.
Which vehicles are compatible with this part?
This component is compatible with Mercedes-Benz heavy commercial vehicles, including trucks and tractor units.
What are the technical port specifications?
The unit features M22x1.5 VOSS ports for primary connections and an M16x1.5 VOSS port, designed for a maximum operating pressure of 10 BAR.
How can I identify if a relay valve needs replacement?
Technicians should look for symptoms such as delayed braking response or audible air leaks within the pneumatic brake system during routine inspections.
What are the OE reference numbers of this part?
303.01.0003 directly replaces Mercedes-Benz OE number 0044291144.