301.03.0021 Complete, Air Dryer Valve
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301.03.0021 Complete, Air Dryer Valve - KNORR-BREMSE

301.03.0021

Summary

●Heater: 24 V ●Port 1: M22x1,5 ●Port 21: M22x1,5 ●Pressure: 8,1 BAR ●Port 22: M12x1,5 ●Port 4/23: M12x1,5

EAN Code8699031079844
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Description

The heavy-duty grade materials used in this complete air dryer valve ensure consistent performance within the pneumatic brake system. This component is engineered to manage air filtration and moisture-related pressure stabilization, maintaining the integrity of the vehicle's braking capabilities under demanding conditions.

301.03.0021 is the OE-equivalent of the KNORR-BREMSE II30179, II30179AT, II30179N49, II30448N50, K000478, LA 6252, LA 8225 and DAF 1285553 used in Mercedes-Benz and DAF heavy commercial vehicles. This specific part ensures seamless integration with existing braking hardware systems.

For workshop technicians, this unit features a 24 V heater and specific port configurations including M22x1,5 and M12x1,5 connections to facilitate precise assembly. Regular inspection of the air dryer assembly and port seals is recommended during routine maintenance intervals to ensure optimal pneumatic system function.

This high-strength component is designed for professional installation in heavy commercial vehicle brake systems to prevent moisture buildup and maintain air pressure stability.

Technical Specifications

Heater24 V
Port 1M22x1,5
Port 21M22x1,5
Pressure8,1 BAR
Port 22M12x1,5
Port 4/23M12x1,5

Other OEMs

DAF

  • 1285553

KNORR-BREMSE

  • II30179
  • II30179AT
  • II30179N49
  • II30448N50
  • K000478
  • LA 6252
  • LA 8225
  • LA6252
  • LA8225

MERCEDES BENZ

  • 371 431 70 15
  • 3714317015
  • A3714317015

Related Products

Repair Kits

Vehicles Used

BrandModelEngine
DAF
KNORR-BREMSE
MERCEDES BENZ

FAQ

What are the compatible OEM numbers for this air dryer valve?
This part is compatible with OEM numbers: 1285553, II30179, II30179AT, II30179N49, II30448N50, K000478, LA 6252, LA 8225, and 371 431 70 15.
Which vehicle brands can use this specific component?
This complete air dryer valve is designed for use with DAF and Mercedes-Benz heavy commercial vehicles and KNORR-BREMSE systems.
Does this unit include a heater for cold climates?
Yes, this model is equipped with a 24 V heater to ensure reliable operation in various environmental conditions.
What are the port specifications for installation?
The unit features Port 1 (M22x1,5), Port 21 (M22x1,5), Port 22 (M12x1,5), and Port 4/23 (M12x1,5) for standard assembly.
Is this part suitable for heavy duty braking systems?
Yes, it is a high-strength component designed specifically for the pneumatic brake systems of heavy commercial vehicles.