301.01.0019 Unloader Valves
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301.01.0019 Unloader Valves — WABCO

301.01.0019

Summary

The 301.01.0019 Unloader Valve is a precision-engineered component for heavy commercial vehicle brake systems. Featuring Port 1 (M22x1,5) and Port 21 (M22x1,5), it operates with a cut-out pressure of 8,1 BAR / 0,4 BAR. This part is fully compatible with WABCO, Volvo, Mack, and Freightliner systems to ensure reliable pneumatic pressure regulation.

EAN Code8683457011045
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Description

The technical function of this unloader valve is to regulate air pressure within the braking system, ensuring optimal pneumatic control and safety for heavy-duty vehicles. Designed with heavy-duty grade materials, it provides consistent performance under high-pressure conditions, making it a reliable component for long-distance transport stability.

301.01.0019 is the OE equivalent of the WABCO 975 303 475 0 unloader valve used in FREIGHTLINER, IVECO, KENWORTH, MACK, MERITOR, PETERBILT, RENAULT TRUCKS, VOLVO, and WABCO systems. This part ensures seamless integration with your existing brake architecture through its specific port configurations and pressure thresholds.

Workshop technicians can rely on the precise specifications of this unit, which includes Port 1 at M22x1,5 and Port 21 at M22x1,5. Given the cut-out pressure of 8,1 BAR / 0,4 BAR and the functional status of the inflation and recycle valves, it is engineered for straightforward assembly and long-term maintenance in professional service environments.

Technical Specifications

Port 1M22x1,5
Port 4-
Port 21M22x1,5
Port 22 -
Port 23-
Cut-Out Pressure8,1 BAR / 0,4 BAR
Inflation ValveOK
Recycle ValveOK

Other OEMs

FREIGHTLINER

  • TDAS9753034750

IVECO

  • 5000877145

KENWORTH

  • S975-303-475-0

MACK

  • 6300-9753034750
  • 8235-S9753034750

MERITOR

  • S9753034750

PETERBILT

  • S 975-303-475-0

RENAULT TRUCKS

  • 5010067853

VOLVO

  • WAB9753034750

WABCO

  • 975 303 475 0
  • 9753034750

Related Products

Repair Kits

Vehicles Used

BrandModelEngine
FREIGHTLINER
IRISBUS
IVECO
KENWORTH
MACK
MERITOR
PETERBILT
RENAULT TRUCKS
VOLVO
WABCO

FAQ

What are the technical specifications for the ports on this unloader valve?
The unit features Port 1 (M22x1,5) and Port 21 (M22x1,5) to ensure precise fitment in heavy commercial braking systems.
Which OEM numbers is this part compatible with?
It is compatible with WABCO 975 303 475 0, VOLVO WAB9753034750, MACK 6300-9753034750, and FREIGHTLINER TDAS9753034750.
Is this unloader valve suitable for heavy-duty truck applications?
Yes, it is designed for heavy commercial vehicles like Volvo, Mack, and Peterbilt to maintain reliable pneumatic pressure.
What is the operating cut-out pressure for this component?
The specified cut-out pressure for this unloader valve is 8,1 BAR / 0,4 BAR.
Does this part include functional inflation and recycle valves?
Yes, the technical configuration includes both functional Inflation Valve and Recycle Valve systems.