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301.03.0121 Air Processing Unit, Brake System

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301.03.0121 Compatible Air Processing Unit

301.03.0121

Summary

This heavy-duty air processing unit features a 24 V heater and M22x1.5 port configurations to ensure reliable air regulation. Designed for heavy commercial vehicle brake systems, it maintains optimal pressure at 10.4 BAR to protect pneumatic circuits from moisture and contaminants. Equivalent to OE Knorr-Bremse K116872N50.

Product identifiers
EAN Code8699031081908
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Compatible OEM Codes

  • KNORR-BREMSE
    • LA 8638
    • K116872N52
    • K116872N50

Description

What does an air processing unit do?

This air processing unit serves as a critical component within the pneumatic brake system, ensuring that compressed air is dried, regulated, and distributed correctly. By integrating moisture removal and pressure regulation into a single housing, it protects downstream components from corrosion and mechanical failure in heavy commercial vehicle applications.

System compatibility and fitment

This component is engineered for compatibility with Knorr-Bremse systems. It is designed to operate effectively within complex air brake circuits, maintaining a stable pressure of 10.4 BAR to ensure consistent braking performance across the vehicle's pneumatic network.

Installation and maintenance

Installation should be performed by a workshop technician to ensure all M22x1.5 ports are correctly seated and sealed. Periodic inspection of the unit's performance is recommended to prevent system contamination or pressure drops during heavy-duty operation.

Troubleshooting guidance

Consult your authorized distributor.

OE cross-reference

301.03.0121 (Air Processing Unit) is the equivalent of the Knorr-Bremse OE numbers. This part directly replaces Knorr-Bremse OE numbers K116872N50, K116872N52, LA8638.

Technical Specifications

Technical Specifications
Heater24 V
Port 1M22x1,5
Port 21M22x1,5
Pressure10,4 BAR

Other OEMs

KNORR-BREMSE

  • LA8638
  • LA 8638
  • K116872N52
  • K116872N50

Related Products

Repair Kits

Used In

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
KNORR-BREMSE

FAQ

What is the function of this air processing unit?
The unit dries compressed air from the compressor, regulates the pressure, and distributes it to various pneumatic circuits like brakes and suspension.
What voltage is required for this unit?
This specific model is designed for 24 V electrical systems common in heavy commercial vehicles.
What are the port specifications?
The unit features M22x1.5 port sizes to ensure secure connections within the pneumatic brake system.
How does this part help prevent system damage?
By regulating pressure to 10.4 BAR and managing moisture removal, it prevents corrosion and damage in the vehicle's pneumatic components.
What are the OE reference numbers of this part?
301.03.0121 directly replaces Knorr-Bremse OE numbers K116872N50, K116872N52, LA8638.