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303.02.0017.01 Multi-circuit Protection Valve Repair Kit, Brake System
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303.02.0017.01 Knorr-Bremse Compatible Repair Kit

303.02.0017.01

Summary

This repair kit for multi-circuit protection valves is designed for heavy commercial vehicle pneumatic brake systems. It ensures the proper restoration of internal sealing and circuit separation, compatible with Knorr-Bremse systems and fitted to DAF and Iveco trucks. Equivalent to OE Knorr-Bremse AE4502S1.

Product identifiers
EAN Code8699031083896
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Compatible OEM Codes

  • KNORR-BREMSE
    • K050701N50 S1
    • K050701N00 S1
    • K048308N50 S1
    • K048307N50 S1
    • K011931 S1
    • K001001N50 S1
    • II39010FN52 S1
    • II39010FN50 S1
    • II39010FN00 S1
    • II39010F004 S1
    • II39010F S1
    • II38749FN52 S1
    • II38749FN50 S1
    • II38749FN00 S1
    • II38749FM2 S1
    • II38749F0041 S1
    • II38749F004 S1
    • II38749F S1
    • II37679 S1
    • II37464N52 S1
    • II37464N50 S1
    • AE 4565 S1
    • AE 4563 S1
    • AE 4562 S1
    • AE 4561 S1
    • AE 4560 S1
    • AE 4546 S1
    • AE 4544 S1
    • AE 4534 S1
    • AE 4529 S1
    • AE 4528 S1
    • AE 4528 S S1
    • AE 4527 S1
    • AE 4526 S1
    • AE 4516 S S1
    • AE 4503 S1
    • AE 4502 S1

Description

What does a repair kit do?

This repair kit provides a complete set of replacement components designed to overhaul the multi-circuit protection valve within the pneumatic brake circuit of heavy commercial vehicles. By replacing internal elements, this kit restores the vital function of managing several air lines from a single housing, ensuring that air is correctly distributed between service, parking, and auxiliary circuits.

Vehicle and system compatibility

This component is compatible with Knorr-Bremse systems found on DAF and Iveco trucks. It allows workshop technicians to restore internal sealing and circuit separation without the need to replace the entire valve assembly, effectively maintaining the safety and reliability of the braking system.

Installation and maintenance

During installation, technicians should ensure all internal housing surfaces are clean to allow the new gaskets and O-rings to seat correctly. Regular inspection of these components is essential to prevent air leaks that could compromise circuit prioritization. Check the compatibility list to ensure proper fitment.

Troubleshooting circuit leaks

If a leak is detected in one air line, repairing the multi-circuit protection valve can prevent a total system failure by keeping remaining circuits operational.

OE cross-reference

303.02.0017.01 (Multi-circuit Protection Valve Repair Kit) is the equivalent of the Knorr-Bremse OE numbers. This part directly replaces Knorr-Bremse OE numbers AE4502S1, AE4503S1, AE4516SS1, AE4526S1, AE4527S1, AE4528SS1, AE4528S1, AE4529S1, AE4534S1, AE4544S1, AE4546S1, AE4560S1, AE4561S1, AE4562S1, AE4563S1, AE4565S1, II37464N50S1, II37464N52S1, II37679S1, II38749FS1, II38749F004S1, II38749F0041S1, II38749FM2S1, II38749FN00S1, II38749FN50S1, II38749FN52S1, II39010FS1, II39010F004S1, II39010FN00S1, II39010FN50S1, II39010FN52S1, K001001N50S1, K011931S1, K048307N50S1, K048308N50S1, K050701N00S1, K050701N50S1.

Other OEMs

KNORR-BREMSE

  • AE4565S1
  • AE4563S1
  • AE4562S1
  • AE4561S1
  • AE4560S1
  • AE4546S1
  • AE4544S1
  • AE4534S1
  • AE4529S1
  • AE4528SS1
  • AE4528S1
  • AE4527S1
  • AE4526S1
  • AE4516SS1
  • AE4503S1
  • AE4502S1
  • K050701N50 S1
  • K050701N00 S1
  • K048308N50 S1
  • K048307N50 S1
  • K011931 S1
  • K001001N50 S1
  • II39010FN52 S1
  • II39010FN50 S1
  • II39010FN00 S1
  • II39010F004 S1
  • II39010F S1
  • II38749FN52 S1
  • II38749FN50 S1
  • II38749FN00 S1
  • II38749FM2 S1
  • II38749F0041 S1
  • II38749F004 S1
  • II38749F S1
  • II37679 S1
  • II37464N52 S1
  • II37464N50 S1
  • AE 4565 S1
  • AE 4563 S1
  • AE 4562 S1
  • AE 4561 S1
  • AE 4560 S1
  • AE 4546 S1
  • AE 4544 S1
  • AE 4534 S1
  • AE 4529 S1
  • AE 4528 S1
  • AE 4528 S S1
  • AE 4527 S1
  • AE 4526 S1
  • AE 4516 S S1
  • AE 4503 S1
  • AE 4502 S1

Related Products

Used In

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
DAF
IVECO
KNORR-BREMSE

FAQ

What does this repair kit do?
This kit restores the internal sealing and circuit separation of a multi-circuit protection valve by replacing essential internal components like diaphragms and O-rings.
Which vehicles is this kit compatible with?
This kit is compatible with Knorr-Bremse systems used in DAF and Iveco heavy commercial vehicles.
Can I replace just the seals or do I need a new valve?
This kit is specifically designed to renew the internal parts of the valve, allowing for a full overhaul without replacing the entire unit.
What are the signs that a repair is needed?
Signs include air leaks in specific circuits or a failure in the valve's ability to prioritize air supply to the service or parking brakes.
What are the OE reference numbers of this part?
303.02.0017.01 directly replaces Knorr-Bremse OE numbers AE4502S1, AE4503S1, AE4516SS1, AE4526S1, AE4527S1, AE4528SS1, AE4528S1, AE4529S1, AE4534S1, AE4544S1, AE4546S1, AE4560S1, AE4561S1, AE4562S1, AE4563S1, AE4565S1, II37464N50S1, II37464N52S1, II37679S1, II38749FS1, II38749F004S1, II38749F0041S1, II38749FM2S1, II38749FN00S1, II38749FN50S1, II38749FN52S1, II39010FS1, II39010F004S1, II39010FN00S1, II39010FN50S1, II39010FN52S1, K001001N50S1, K011931S1, K048307N50S1, K048308N50S1, K050701N00S1, K050701N50S1.