301.03.0053 Complete, Air Dryer Valve
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301.03.0053 KNORR-BREMSE Complete, Air Dryer Valve

301.03.0053

Summary

●Heater: 24 V ●Port 1: M22x1,5 ●Port 21: M22x1,5 ●Pressure: 12,5 BAR ●Port 4/23: M12x1,5

EAN Code8699031080161
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Description

The technical specifications of this component ensure reliable pneumatic regulation within the brake system. This complete air dryer valve is engineered with a 24 V heater and specific port dimensions including M22x1,5 for Port 1 and Port 21, and M12x1,5 for Port 4/23, maintaining a stable operating pressure of 12,5 BAR.

301.03.0053 is the OE-equivalent of the KNORR-BREMSE II39740F, II39740FN50, and LA 8288 components used in KNORR-BREMSE systems. This part ensures seamless integration with heavy commercial vehicle pneumatic architectures where high-strength components and precise pressure management are required.

Workshop technicians should verify the port thread sizes and the 24 V electrical connection during installation to ensure a precise fit. Regular maintenance of the air dryer system helps prevent moisture buildup and ensures the longevity of the braking system's pneumatic circuits. It is recommended to check all connection points like Port 1 and Port 21 for any signs of leakage during routine service intervals.

Technical Specifications

Heater24 V
Port 1M22x1,5
Port 21M22x1,5
Pressure12,5 BAR
Port 22-
Port 4/23M12x1,5

Other OEMs

KNORR-BREMSE

  • II39740F
  • II39740FN50
  • LA 8288
  • LA8288

Related Products

Repair Kits

Vehicles Used

BrandModelEngine
KNORR-BREMSE

FAQ

What are the compatible OEM numbers for this air dryer valve?
This part is compatible with the following OEM numbers: II39740F, II39740FN50, and LA 8288.
What is the operating voltage for the heater component?
The unit is designed to operate with a 24 V heater system to ensure functionality in heavy commercial vehicles.
Can this part be used in standard passenger car braking systems?
No, this component is specifically engineered for heavy commercial vehicle pneumatic systems and heavy-duty applications.
What are the port specifications for this valve?
The valve features Port 1 (M22x1,5), Port 21 (M22x1,5), and Port 4/23 (M12x1,5) for precise assembly.
Does this part support high-pressure environments?
Yes, it is designed to maintain performance at an operating pressure of up to 12,5 BAR.