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81521169071 Relay Valve Compatible with MAN

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81521169071 Relay Valve for MAN Trucks

303.01.0004

Summary

This relay valve is designed for heavy commercial vehicle brake systems, specifically engineered for MAN applications. It features M22x1.5 VOSS port 1, M16x1.5 VOSS port 2, and M16x1.5 VOSS port 4, operating at a maximum pressure of 10 BAR to ensure reliable pneumatic performance. Equivalent to OE MAN 81521169071.

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 serves as a critical component within the pneumatic brake system of heavy commercial vehicles. By managing air pressure distribution, it ensures consistent and responsive braking performance under heavy loads. Built with high-strength components, it is designed to withstand the rigorous pressure cycles typical in commercial transport environments.

Compatible vehicles and engines

This specific component is compatible with MAN vehicles and meets the requirements for heavy-duty braking stability. It is engineered to function seamlessly within the existing pneumatic architecture of the vehicle's braking system.

Installation and maintenance

For proper installation, technicians should verify that the connection ports match the M22x1.5 VOSS and M16x1.5 VOSS specifications. Ensuring all seals are correctly seated during assembly will prevent pressure drops and maintain the 10 BAR maximum operating limit. Always consult your authorized distributor for fitment verification.

Troubleshooting

Monitoring for air leaks or inconsistent braking response can help identify when a replacement is necessary to maintain fleet safety.

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 81521169071.

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?
It acts as a pneumatic control component that regulates air pressure within the braking system to ensure efficient and synchronized braking action.
What are the connection specifications?
The unit features Port 1 with M22x1.5 VOSS, Port 2 with M16x1.5 VOSS, and Port 4 with M16x1.5 VOSS connections.
What is the maximum operating pressure?
This relay valve is designed to operate at a maximum pressure of up to 10 BAR within the vehicle's pneumatic circuit.
Which vehicle types is this compatible with?
This part is specifically designed for use in MAN heavy commercial vehicles to maintain original braking standards.
What are the OE reference numbers of this part?
303.01.0004 directly replaces MAN OE number 81521169071.