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301.03.0039 Air Dryer Valve, Brake System

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301.03.0039 Compatible Air Dryer Valve

301.03.0039

Summary

This heavy-duty air dryer valve features M22x1.5 and M12x1.5 port configurations and operates at 8.1 BAR. It is designed to ensure consistent air quality and braking performance in heavy commercial vehicle brake systems, compatible with Knorr-Bremse systems. Equivalent to OE Knorr-Bremse II30179.

Product identifiers
EAN Code8699031080024
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Compatible OEM Codes

  • KNORR-BREMSE
    • LA 8253
    • K022751
    • II31478N50
    • II31119AT
    • II31119
    • II30179

Description

What does an air dryer valve do?

This air dryer valve plays a critical role in the pneumatic brake system by managing moisture and contaminants within the air lines. By regulating air flow through its specific port configuration, it helps prevent corrosion and freezing in the braking circuit, ensuring reliable performance for heavy commercial vehicles.

Technical specifications and fitment

The component is engineered for durability and precision, featuring M22x1.5 and M12x1.5 ports to facilitate seamless integration into existing pneumatic setups. This valve is designed to function effectively at a pressure of 8.1 BAR, maintaining the integrity of the air supply throughout the braking cycle.

Installation and maintenance

For optimal performance, technicians should inspect the valve during routine brake system maintenance to prevent moisture buildup. Ensuring all ports are free from debris and that seals are intact will help maintain stable pressure levels and prevent system malfunctions.

System reliability

Consult your authorized distributor.

OE cross-reference

301.03.0039 (Air Dryer Valve Air Dryer Valves) is the equivalent of the Knorr-Bremse OE numbers. This part directly replaces Knorr-Bremse OE numbers II30179, II31119, II31119AT, II31478N50, K022751, LA8253.

Technical Specifications

Technical Specifications
Heater-----
Port 1M22x1,5
Port 21M22x1,5
Pressure8,1 BAR
Port 22M12x1,5
Port 4/23M12x1,5

Other OEMs

KNORR-BREMSE

  • LA8253
  • LA 8253
  • K022751
  • II31478N50
  • II31119AT
  • II31119
  • II30179

Related Products

Repair Kits

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
KNORR-BREMSE

FAQ

What is the function of this air dryer valve?
The valve manages moisture and contaminants within the pneumatic brake system, protecting critical components from corrosion and preventing freeze-up during operation.
What are the port specifications for this component?
This unit is equipped with M22x1.5 ports (Port 1 and Port 21) and M12x1.5 ports (Port 22 and Port 4/23) to ensure precise fitment.
What is the operating pressure for this part?
This specific air dryer valve is designed to operate effectively at a pressure of 8.1 BAR within the vehicle's pneumatic system.
Which systems is this part compatible with?
This component is compatible with Knorr-Bremse systems used in heavy commercial vehicle braking applications.
What are the OE reference numbers of this part?
301.03.0039 directly replaces Knorr-Bremse OE numbers II30179, II31119, II31119AT, II31478N50, K022751, LA8253.