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301.03.0039 KNORR-BREMSE Complete, Air Dryer Valve

301.03.0039

Summary

●Port 1: M22x1,5 ●Port 21: M22x1,5 ●Pressure: 8,1 BAR ●Port 22: M12x1,5 ●Port 4/23: M12x1,5. This heavy-duty air dryer valve component is engineered for precision and durability in pneumatic brake systems.

EAN Code8699031080024
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Description

The technical functionality of this component is centered on maintaining optimal air quality and pressure within the pneumatic braking system. Designed for heavy commercial vehicle applications, it ensures the efficient removal of moisture and contaminants from the compressed air stream to prevent system-wide failures.

301.03.0039 is the OE-equivalent of the KNORR-BREMSE II30179, II31119, II31119AT, II31478N50, K022751, and LA 8253 complete, air dryer valve used in KNORR-BREMSE systems. This high-strength component provides seamless integration with existing brake hardware to maintain vehicle safety standards.

Workshop technicians should verify the port specifications—specifically the M22x1,5 and M12x1,5 connections—during installation to ensure a perfect fit. Regular inspection of the air dryer assembly is recommended to maintain consistent pressure levels and prevent moisture buildup that could affect braking performance during heavy-duty operation.

Technical Specifications

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

Other OEMs

KNORR-BREMSE

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

Related Products

Vehicles Used

BrandModelEngine
KNORR-BREMSE

FAQ

Which OEM numbers is this part compatible with?
This part is compatible with the following OE numbers: II30179, II31119, II31119AT, II31478N50, K022751, and LA 8253.
What are the technical port specifications for this unit?
The unit features Port 1 (M22x1,5), Port 21 (M22x1,5), Port 22 (M12x1,5), and Port 4/23 (M12x1,5).
Is this component suitable for heavy commercial vehicles?
Yes, this is a professional-grade component designed specifically for heavy commercial vehicle pneumatic braking systems.
What is the operating pressure for this air dryer valve?
The specified operating pressure for this complete air dryer valve is 8,1 BAR.
Can this part be used as a replacement for KNORR-BREMSE systems?
Yes, it is designed as a high-quality replacement for various KNORR-BREMSE system components including II30179 and II31478N50.