LA 8253 Knorr-Bremse Compatible Air Dryer Valve
301.03.0039
Summary
This air dryer valve is engineered for heavy commercial vehicle brake systems. It features M22x1.5 and M12x1.5 port configurations and is designed to maintain consistent pressure at 8.1 BAR, ensuring optimal moisture removal and system protection. Equivalent to OE Knorr-Bremse LA8253.
| EAN Code | 8699031080024 |
|---|
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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 serves as a critical component within the pneumatic brake system, working to remove moisture and contaminants from the compressed air supply. By preventing water buildup, it protects sensitive downstream components from corrosion and prevents freeze-up during cold operations, ensuring consistent braking performance.System compatibility
This component is compatible with Knorr-Bremse systems and is designed to meet rigorous heavy commercial vehicle standards. It ensures that the air supply remains clean and dry for the entire pneumatic circuit, supporting the long-term reliability of the braking system.Installation and technical specifications
Installation requires attention to the specific port sizes: Port 1 and Port 21 feature M22x1.5 threading, while Port 22 and Port 4/23 utilize M12x1.5 threading. Technicians should verify that the operating pressure remains within the specified 8.1 BAR range during routine maintenance checks to ensure peak efficiency.Maintenance and troubleshooting
Regular inspection of the valve helps prevent system faults related to moisture carryover. For optimal service life, always check the integrity of all connections and ensure that the valve is functioning correctly within the overall air brake assembly.OE cross-reference
301.03.0039 (Air Dryer Valve Air Dryer Valves) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number LA8253.Technical Specifications
| Heater | ----- |
|---|---|
| Port 1 | M22x1,5 |
| Port 21 | M22x1,5 |
| Pressure | 8,1 BAR |
| Port 22 | M12x1,5 |
| Port 4/23 | M12x1,5 |
Other OEMs
KNORR-BREMSE
- LA8253
- LA 8253
- K022751
- II31478N50
- II31119AT
- II31119
- II30179
Related Products
Repair Kits
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE |
FAQ
What is the primary function of this air dryer valve?
The valve removes moisture and contaminants from compressed air to protect the brake system from corrosion and freezing.
Which port sizes are used on this component?
This unit features M22x1.5 threading on Port 1 and Port 21, and M12x1.5 threading on Port 22 and Port 4/23.
What is the rated operating pressure?
The component is designed to operate at a pressure of 8.1 BAR to ensure effective moisture separation.
Is this part compatible with Knorr-Bremse systems?
Yes, this air dryer valve is designed to be compatible with Knorr-Bremse systems in heavy commercial vehicles.
What are the OE reference numbers of this part?
301.03.0039 directly replaces Knorr-Bremse OE number LA8253.