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303.05.0017 Trailer Control Valve, Brake System
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303.05.0017 Compatible Trailer Control Valve

303.05.0017

Summary

This high-strength trailer control valve is designed for heavy commercial vehicle air brake systems. It features M22x1,5 port sizes (Port 1, Port 2, Port 41, Port 42, Port 43) and is compatible with DAF, Iveco, and O&K systems to ensure reliable pneumatic pressure regulation. Equivalent to OE DAF 1519319, Iveco 01383498 and O&K 8485440.

Product identifiers
EAN Code8683457009882
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Compatible OEM Codes

  • IVECO
    • 04684437
    • 04672021
    • 01383498
  • WABCO
    • 973 002 022 0
  • O&K
    • 8485440
  • DAF
    • 1519319

Description

What does a trailer control valve do?

This trailer control valve serves as a critical component within the pneumatic air brake system of heavy commercial vehicles. It functions by balancing the air pressure delivered to the braking system based on driver input, ensuring stable and predictable deceleration for the entire vehicle combination.

Vehicle and system compatibility

This component is compatible with DAF, Iveco, and O&K vehicles. It is specifically engineered to work within pneumatic systems similar to those developed by WABCO, providing reliable performance in demanding transport environments.

Installation and maintenance

The valve features multiple M22x1,5 connections (including Ports 1, 2, 41, 42, and 43) to facilitate precise pneumatic integration. Technicians should ensure all ports are free of debris and that connections are tightened to specification to prevent air leaks during operation.

Troubleshooting guidance

Regular inspection of the valve body and seals is recommended during scheduled maintenance to prevent pressure drops in the brake line. If air leakage or inconsistent braking response is detected, check the integrity of all M22x1,5 connection points.

OE cross-reference

303.05.0017 (Trailer Control Valve) is the equivalent of the DAF, Iveco, O&K and WABCO OE numbers. This part directly replaces DAF OE number 1519319. It also replaces Iveco OE numbers 01383498, 04672021, 04684437, O&K OE number 8485440 and WABCO OE number 9730020220.

Technical Specifications

Technical Specifications
Port 1M22x1,5
Port 2M22x1,5
Port 41M22x1,5
Port 42M22x1,5
Port 43M22x1,5

Other OEMs

DAF

  • 1519319

IVECO

  • 04684437
  • 04672021
  • 01383498

O&K

  • 8485440

WABCO

  • 9730020220
  • 973 002 022 0

Related Products

Repair Kits

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
DAF
IVECO
O&K
WABCO

FAQ

What is the function of this trailer control valve?
The valve regulates air pressure within the pneumatic brake line, balancing the pressure delivered to the brakes to ensure safe and consistent stopping power for heavy vehicles.
Which vehicle makes are compatible with this part?
This component is designed for use in DAF, Iveco, and O&K heavy commercial vehicles and tractor units.
What are the connection specifications for this valve?
The unit features several M22x1,5 ports (Port 1, Port 2, Port 41, Port 42, and Port 43) to ensure compatibility with standard heavy-duty pneumatic lines.
How can I identify if the valve needs replacement?
Technicians should look for symptoms such as air leaks from the M22x1,5 ports or inconsistent braking response during vehicle testing.
What are the OE reference numbers of this part?
303.05.0017 directly replaces DAF OE number 1519319. It also replaces Iveco OE numbers 01383498, 04672021, 04684437, O&K OE number 8485440 and WABCO OE number 9730020220.