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303.07.0057 Levelling Valve — KNORR-BREMSE

303.07.0057

Summary

The 303.07.0057 is a precision-engineered Levelling Valve designed for KNORR-BREMSE systems. It features Port 21 (M12x1,5), Port 11 (M12x1,5), and a 12 BAR pressure rating. This component ensures stable pneumatic suspension regulation with an inner hole diameter of 21/Ø 4.

EAN Code8683457012356
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Compatible OEM Codes

  • KNORR-BREMSE SV 1381

Description

Maintaining optimal pneumatic stability is essential for heavy commercial vehicle suspension systems. This levelling valve is engineered to regulate air pressure precisely, ensuring the vehicle maintains its intended height and ride stability under varying loads.

The 303.07.0057 is the OE equivalent of the KNORR-BREMSE SV1381 used in professional heavy-duty applications. It features a robust construction with dual M12x1,5 ports (Port 21 and Port 11) and is designed to operate at a pressure of 12 BAR. This component is fully compatible with KNORR-BREMSE systems to ensure seamless integration into the air suspension architecture.

For workshop technicians and fleet managers, this part offers a reliable solution for maintaining suspension geometry. When replacing worn components, ensure that the port specifications—specifically the M12x1,5 threading—match the existing system requirements to prevent pneumatic leaks or improper pressure regulation.

Regular inspection of the pneumatic connections and checking for any air leaks around the ports will help maintain the longevity of the suspension system.

Technical Specifications

Port 21M12x1,5
Port 11M12x1,5
Pressure12 BAR
Inner Hole Diameter21 / Ø 4
Lever-
Lever mm-----

Other OEMs

KNORR-BREMSE

  • SV1381
  • SV 1381

Vehicles Used

BrandModelEngine
KNORR-BREMSE

FAQ

What is the primary application of this levelling valve?
This component is designed to regulate air pressure within the pneumatic suspension systems of heavy commercial vehicles to maintain proper vehicle height.
Which OEM references is this part compatible with?
The product is an OE equivalent for KNORR-BREMSE SV1381.
What are the technical port specifications for this unit?
The unit features two ports (Port 21 and Port 11) both utilizing an M12x1,5 thread specification.
What is the maximum operating pressure for this part?
The device is engineered to operate at a standard pressure of 12 BAR.
How can I ensure compatibility with my vehicle system?
Verify that your current system uses an M12x1,5 threading for both ports and check that your current OEM reference matches SV1381.