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303.01.0012 Relay Valve, Brake System

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303.01.0012 Relay Valve for Mercedes-Benz & Scania

303.01.0012

Summary

This high-strength relay valve features M22x1,5 and M16x1,5 port configurations and supports a maximum pressure of 10 BAR. It is designed for heavy commercial vehicle brake systems, ensuring reliable air pressure transfer for Mercedes-Benz, Scania, DAF, Setra, Kässbohrer, and Liebherr vehicles. Equivalent to OE DAF 0396407, Kässbohrer 21151103062 and Liebherr 5029915.

Product identifiers
EAN Code8683457000711
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Compatible OEM Codes

  • SCANIA
    • 571174
    • 571117
    • 350001
    • 350000
    • 2090237
    • 1378560
    • 1313871
  • DAF
    • 1505410
    • 1238501
    • 1238474
    • 0759426
    • 0661693
    • 0396407
  • LIEBHERR
    • 5029915R
    • 5029915
  • WABCO
    • 973 011 002 0
  • SETRA
    • 8285438000
  • ProVia
    • PRO 011 004 0
  • MERCEDES BENZ
    • 003 429 13 44
  • KASSBOHRER
    • 21151103062

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. Constructed with high-strength components, it ensures consistent braking performance under heavy duty conditions by managing air distribution between the reservoir and the brake chambers.

Vehicle and engine compatibility

The component is compatible with Mercedes-Benz, Scania, DAF, Setra, Kässbohrer, and Liebherr vehicles. It is also fitted to Liebherr trucks. This part functions within the pneumatic braking system to improve response times during deceleration.

Installation and maintenance

Technicians should verify the port sizes during installation. This unit features three M22x1,5 ports and one M16x1,5 port, operating at a maximum pressure of 10 BAR. Regular inspection of the seals and connection points is recommended to maintain optimal pneumatic efficiency.

System integration guidance

For proper system integration, ensure that the valve is mounted securely on the chassis to prevent vibration-induced leaks. Checking compatibility with WABCO systems is advised during replacement to ensure seamless integration within the existing pneumatic circuit.

OE cross-reference

303.01.0012 (Relay Valve Relay Valves) is the equivalent of the DAF, Kässbohrer, Liebherr, Mercedes-Benz, Provia, Scania, Setra and WABCO OE numbers. This part directly replaces DAF OE numbers 0396407, 0661693, 0759426, 1238474, 1238501, 1505410. It also replaces Kässbohrer OE number 21151103062, Liebherr OE numbers 5029915, 5029915R, Mercedes-Benz OE number 0034291344, Provia OE number PRO0110040, Scania OE numbers 1313871, 1378560, 2090237, 350000, 350001, 571117, 571174, Setra OE number 8285438000 and WABCO OE number 9730110020.

Technical Specifications

Technical Specifications
Port 1M22x1,5
Port 2M22x1,5
Port 3M22x1,5
Port 4M16x1,5
PressureMAX 10 BAR

Other OEMs

DAF

  • 1505410
  • 1238501
  • 1238474
  • 0759426
  • 0661693
  • 0396407

KASSBOHRER

  • 21151103062

LIEBHERR

  • 5029915R
  • 5029915

MERCEDES BENZ

  • A0034291344
  • 003 429 13 44

ProVia

  • PRO 011 004 0

SCANIA

  • 571174
  • 571117
  • 350001
  • 350000
  • 2090237
  • 1378560
  • 1313871

SETRA

  • 8285438000

WABCO

  • 9730110020
  • 973.011.002.0
  • 973 011 002 0

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
DAF
KASSBOHRER
LIEBHERR
MERCEDES BENZ
ProVia
SCANIA
SETRA
WABCO

FAQ

What is the function of this relay valve?
The relay valve manages air pressure within the pneumatic brake system by responding to pilot signals to ensure rapid and efficient braking action.
Which vehicles are compatible with this part?
This component is designed for heavy commercial vehicles from Mercedes-Benz, Scania, DAF, Setra, Kässbohrer, and Liebherr.
What are the technical port specifications?
The unit is equipped with three M22x1,5 ports and one M16x1,5 port, supporting a maximum operating pressure of 10 BAR.
How can I ensure correct installation?
Technicians should confirm that all port sizes match existing lines and check that the valve is securely mounted to prevent any air leaks or vibration issues.
What are the OE reference numbers of this part?
303.01.0012 directly replaces DAF OE numbers 0396407, 0661693, 0759426, 1238474, 1238501, 1505410. It also replaces Kässbohrer OE number 21151103062, Liebherr OE numbers 5029915, 5029915R, Mercedes-Benz OE number 0034291344, Provia OE number PRO0110040, Scania OE numbers 1313871, 1378560, 2090237, 350000, 350001, 571117, 571174, Setra OE number 8285438000 and WABCO OE number 9730110020.