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81521166067 Relay Valve Compatible with MAN

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81521166067 Compatible Relay Valve for MAN

303.01.0003

Summary

This heavy-duty relay valve is designed for MAN brake systems, featuring M22x1.5 VOSS and M16x1.5 VOSS port configurations and a maximum pressure rating of 10 BAR to ensure reliable pneumatic control in heavy commercial vehicles. Equivalent to OE MAN 81521166067.

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 serves as a critical component within the pneumatic brake system, managing air pressure distribution to ensure precise braking performance. Built with high-strength components, it provides the necessary stability and response times required for heavy commercial vehicle safety protocols.

Vehicle and engine compatibility

This component is designed for use in MAN vehicles. It is engineered to maintain consistent pressure levels across the braking circuit, supporting the demanding operational requirements of professional fleet management.

Installation and maintenance

Installation requires attention to the specific port configurations: Port 1 and Port 2 feature M22x1.5 VOSS connections, while Port 4 utilizes an M16x1.5 VOSS thread. Technicians should verify all connection points and ensure the system operates within the maximum 10 BAR pressure limit to maintain optimal functionality.

System troubleshooting

Regular inspection of the pneumatic lines and connection threads is recommended to prevent air leaks. Maintaining correct port integrity ensures that the braking response remains consistent during heavy-duty service cycles.

OE cross-reference

303.01.0003 (Relay Valve Relay Valves) is the equivalent of the MAN OE number. This part directly replaces MAN OE number 81521166067.

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 regulates air pressure within the braking system to ensure controlled and timely application of braking force in heavy commercial vehicles.
Which vehicle brands is this compatible with?
This specific component is designed for use in MAN vehicles, ensuring precise fitment within their pneumatic brake architectures.
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), operating at a maximum pressure of 10 BAR.
How can I identify a faulty relay valve?
Technicians should look for inconsistent braking response or audible air leaks around the M22 or M16 connection points during system testing.
What are the OE reference numbers of this part?
303.01.0003 directly replaces MAN OE number 81521166067.