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301.03.0037 Air Dryer Valve, Air Dryer Valves
Vaden Part No.

301.03.0037

Air Dryer Valve, Air Dryer Valves

EAN 8699031080000

High-performance 24 V air dryer valve compatible with Knorr-Bremse systems. Features M22x1.5 ports and 7.3 BAR pressure rating. Check the compatibility list.

Description
Heater: 24 V  Port 1: M22x1,5  Port 21: M22x1,5  Pressure: 7,3 BAR  Port 22: -  Port 4/23: M12x1,5 
Replaces KNORR-BREMSE II31112 KNORR-BREMSE II31112AT KNORR-BREMSE II31112N50 KNORR-BREMSE LA 6250 +1

Technical Specifications

6
SpecValue
Heater24 V
Port 1M22x1,5
Port 21M22x1,5
Pressure7,3 BAR
Port 22-
Port 4/23M12x1,5

Cross-Reference

5
BrandPart numberTypeNotes
KNORR-BREMSE II31112
KNORR-BREMSE II31112AT
KNORR-BREMSE II31112N50
KNORR-BREMSE LA 6250
KNORR-BREMSE LA 8250

All OEM part numbers and brand names are used for reference only. Vaden is not affiliated with, endorsed by, or sponsored by these manufacturers.

Repair Kits

1

Description

For heavy commercial vehicle owners looking for a spare part in the Air Dryer Valve, Air Dryer Valves group, VADEN ORIGINAL 301.03.0037 is a reliable alternative equivalent to the KNORR-BREMSE (II31112, II31112AT, II31112N50, LA6250, LA8250) original. Manufactured to OE-quality standards, it stands out for its durability and fit.

Frequently Asked Questions

What is the function of this air dryer valve?
The valve manages air pressure and helps remove moisture from the pneumatic system to prevent corrosion and freezing in the brakes.
What are the electrical requirements for this component?
This specific air dryer valve is designed to operate with a 24 V electrical system, which includes an integrated heater.
What port sizes are required for installation?
The unit features M22x1.5 ports (Port 1 and Port 21) and an M12x1.5 port (Port 4/23) to ensure proper fitment.
Can this be used in heavy commercial vehicle brake systems?
Yes, this component is designed for heavy commercial vehicle applications and is compatible with Knorr-Bremse systems.
What are the OE reference numbers of this part?
301.03.0037 directly replaces Knorr-Bremse OE numbers II31112, II31112AT, II31112N50, LA6250, LA8250.

Vehicle Applications

1
MakeModels
KNORR-BREMSE —