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305.01.0059-S Air Processing Unit for Knorr-Bremse systems

305.01.0059-S

Summary

This heavy-duty Air Processing Unit is engineered for air brake circuits in heavy commercial vehicles. It provides essential pressure regulation and moisture removal to maintain system integrity in harsh operating conditions. Designed to be compatible with Knorr-Bremse systems. Equivalent to OE Knorr-Bremse ZB4709S.

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Compatible OEM Codes

  • KNORR-BREMSE
    • ZB 4709 S

Description

An Air Processing Unit (APU) is an integrated component in the brake system of heavy commercial vehicles that combines air drying, pressure regulation, and distribution functions into a single housing.

This unit plays a critical role in the pneumatic circuit by receiving compressed air from the compressor and performing essential filtration and moisture removal. By regulating air pressure, it ensures stable operation for the brake, suspension, and auxiliary pneumatic circuits. The assembly is constructed with high-strength components to withstand demanding heavy-duty environments.

For optimal performance, technicians should inspect the unit during routine maintenance intervals to ensure correct pressure regulation. While this unit is designed for easy integration, always ensure that all connections are secure to prevent pneumatic leaks within the braking system.

Consult your authorized distributor to check the compatibility list.

OE cross-reference

305.01.0059-S (Air Processing Unit) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number ZB4709S.

Technical Specifications

Technical Specifications
Sensor-

Other OEMs

KNORR-BREMSE

  • ZB4709 S
  • ZB 4709 S

Related Products

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
KNORR-BREMSE

FAQ

What is the main function of an Air Processing Unit?
The unit integrates air drying, pressure regulation, and air distribution into one housing to support the brake and suspension pneumatic circuits.
Is this unit compatible with Knorr-Bremse systems?
Yes, this Air Processing Unit is designed to be compatible with Knorr-Bremse systems for heavy commercial vehicle applications.
What are the signs of a failing Air Processing Unit?
Technicians may notice moisture in the air lines, irregular pressure regulation, or leaks within the pneumatic circuit.
Which systems does this component support?
It supports critical pneumatic circuits including the braking system, suspension, and various auxiliary pneumatic components.
What are the OE reference numbers of this part?
305.01.0059-S directly replaces Knorr-Bremse OE number ZB4709S.