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81521166059 Relay Valve for MAN Heavy Commercial Vehicles

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81521166059 MAN Compatible Relay Valve

303.01.0004

Summary

This relay valve is designed for MAN heavy commercial vehicles, featuring M22x1.5 VOSS, M16x1.5 VOSS, and M16x1.5 VOSS ports. It operates with a maximum pressure of 10 BAR to ensure reliable brake system performance. Equivalent to OE MAN 81521166059.

Product identifiers
EAN Code8699031064345
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Compatible OEM Codes

  • MAN
    • 81.52116-9071
    • 81.52116-9065
    • 81.52116-6065
    • 81.52116-6062
    • 81.52116-6061
    • 81.52116-6059
  • WABCO
    • 973 006 000 0
  • SCANIA
    • 1935644
  • RENAULT TRUCKS
    • 7701012770
  • IVECO
    • 08137884
  • DAF
    • 1505412

Description

What does a relay valve do?

This relay valve plays a critical role in the pneumatic brake system by modulating air pressure to ensure precise braking force. Built with high-strength components, it maintains consistent performance under heavy-duty operating conditions, providing essential control for heavy commercial vehicle safety.

Vehicle compatibility and fitment

This specific model is designed for MAN trucks and is compatible with MAN systems. It features specialized port configurations, including an M22x1.5 VOSS inlet and M16x1.5 VOSS outlets, ensuring a precise fit within the vehicle's pneumatic circuit.

Installation and maintenance

For proper maintenance, technicians should inspect the port connections and ensure the M22x1.5 and M16x1.5 VOSS fittings are secure. Regular checks of the air pressure levels, which should not exceed the 10 BAR limit, help prevent premature wear of the internal components.

Troubleshooting guidance

If the braking response feels inconsistent or air leaks are detected near the ports, it may be time to evaluate the valve's condition to maintain optimal system integrity.

OE cross-reference

303.01.0004 (Relay Valve Relay Valves) is the equivalent of the MAN OE number. This part directly replaces MAN OE number 81521166059.

Technical Specifications

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

Other OEMs

DAF

  • 1505412

IVECO

  • 08137884

MAN

  • 81521169071
  • 81521169065
  • 81521166065
  • 81521166062
  • 81521166061
  • 81521166059
  • 81.52116.9071
  • 81.52116.9065
  • 81.52116.6065
  • 81.52116.6062
  • 81.52116.6061
  • 81.52116.6059
  • 81.52116-9071
  • 81.52116-9065
  • 81.52116-6065
  • 81.52116-6062
  • 81.52116-6061
  • 81.52116-6059

RENAULT TRUCKS

  • 7701012770

SCANIA

  • 1935644

WABCO

  • 9730060000
  • 973.006.000.0
  • 973 006 000 0

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
DAF
IVECO
MAN
RENAULT TRUCKS
SCANIA
WABCO

FAQ

What is the function of this relay valve?
The relay valve regulates air pressure within the brake system to ensure consistent and responsive braking performance for heavy commercial vehicles.
What are the port specifications for this component?
This component features one M22x1.5 VOSS port and two M16x1.5 VOSS ports, designed for secure pneumatic connections.
What is the maximum operating pressure?
This relay valve is designed to operate with a maximum pressure of 10 BAR to ensure safe and reliable braking.
Which vehicle brands is this compatible with?
This part is specifically designed for compatibility with MAN trucks and their associated pneumatic braking systems.
What are the OE reference numbers of this part?
303.01.0004 directly replaces MAN OE number 81521166059.