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81521169075 Relay Valve Compatible with MAN

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81521169075 Relay Valve for MAN Trucks

303.01.0002

Summary

This heavy-duty relay valve is designed for MAN commercial vehicles. It features M22x1.5 and M16x1.5 VOSS ports, supports a maximum pressure of 8.5 bar, and includes an integrated silencer for optimal pneumatic performance. Equivalent to OE MAN 81521169075.

Product identifiers
EAN Code8699031064321
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Compatible OEM Codes

  • MAN
    • 81.52116-9075
    • 81.52116-6076
    • 81.52116-6075
    • 81.52116-6074
  • MERCEDES BENZ
    • 004 429 80 44
    • 004 429 63 44
  • WABCO
    • 973 006 003 0
  • SCANIA
    • 1935646
  • ProVia
    • PRO 011 003 0
  • DAF
    • 1518267

Description

What does a relay valve do?

This relay valve plays a critical role in the pneumatic brake system of heavy commercial vehicles by controlling the air pressure delivery to the brake chambers. Engineered with high-strength components, it ensures precise modulation and reliable braking response under heavy-duty conditions.

Vehicle compatibility and fitment

This component is specifically compatible with MAN trucks. It is designed to function within the complex pneumatic circuits of heavy commercial vehicle braking systems, ensuring consistent pressure regulation for safe operation.

Installation and maintenance

Installation requires careful attention to the M22x1.5 VOSS and M16x1.5 VOSS port connections to ensure an airtight seal. Technicians should verify that the system pressure does not exceed the 8.5 bar limit and check the silencer integrity during routine maintenance to prevent moisture ingress.

System performance and checks

Regular inspection of the pneumatic lines and port connections is recommended to maintain optimal braking performance and prevent air leaks in the system.

OE cross-reference

303.01.0002 (Relay Valve Relay Valves) is the equivalent of the MAN OE number. This part directly replaces MAN OE number 81521169075.

Technical Specifications

Technical Specifications
Port 1M22x1,5 VOSS
Port 2M22x1,5 VOSS
Port 4M16x1,5 VOSS
SilencerOK
PressureMAX 8.5 BAR
Port 3-

Other OEMs

DAF

  • 1518267

MAN

  • 81521169075
  • 81521169074
  • 81521166076
  • 81521166075
  • 81521166074
  • 81.52116.9075
  • 81.52116.9074
  • 81.52116.6076
  • 81.52116.6075
  • 81.52116.6074
  • 81.52116-9075
  • 81.52116-6076
  • 81.52116-6075
  • 81.52116-6074

MERCEDES BENZ

  • A0044298044
  • A0044296344
  • 0044298044
  • 0044296344
  • 004.429.8044
  • 004.429.80.44
  • 004.429.6344
  • 004.429.63.44
  • 004 429 8044
  • 004 429 6344
  • 004 429 80 44
  • 004 429 63 44

ProVia

  • PRO 011 003 0

SCANIA

  • 1935646

WABCO

  • 9730060030
  • 973.006.003.0
  • 973 006 003 0

Related Products

Repair Kits

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
DAF
MAN
MERCEDES BENZ
ProVia
SCANIA
WABCO

FAQ

What is the maximum operating pressure for this valve?
This relay valve is designed for use in systems with a maximum operating pressure of 8.5 bar.
Which vehicle brands is this part compatible with?
This specific component is designed for compatibility with MAN heavy commercial vehicles.
What port sizes are used on this relay valve?
The unit features M22x1.5 VOSS ports (Port 1 and 2) and an M16x1.5 VOSS port (Port 4).
Does this relay valve include a silencer?
Yes, this relay valve comes equipped with an integrated silencer to assist in pneumatic regulation.
What are the OE reference numbers of this part?
303.01.0002 directly replaces MAN OE number 81521169075.