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303.07.0057 Levelling Valve, Suspension
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303.07.0057 Compatible Levelling Valve

303.07.0057

Summary

This high-strength levelling valve is designed for heavy commercial vehicle suspension systems. It features M12x1.5 port sizes (Port 11 and Port 21), a 21 / Ø 4 inner hole diameter, and is rated for 12 BAR pressure to ensure reliable performance in demanding environments. Equivalent to OE Knorr-Bremse SV1381.

Product identifiers
EAN Code8683457012356
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Compatible OEM Codes

  • KNORR-BREMSE
    • SV 1381

Description

What does a levelling valve do?

This levelling valve plays a critical role in maintaining the correct ride height within heavy commercial vehicle suspension systems. By regulating air pressure, it ensures the stability and balance of the vehicle chassis under varying load conditions.

Compatibility and specifications

The component is compatible with Knorr-Bremse systems and is built using high-strength components to withstand heavy-duty service. It features specific M12x1.5 port configurations and an inner hole diameter of 21 / Ø 4, making it a precise replacement for worn or faulty units.

Installation and maintenance

For proper maintenance, technicians should inspect the M12x1.5 connections for leaks and verify that the 12 BAR pressure rating remains consistent during operation. Regular checks of the suspension linkage ensure the valve operates within its intended parameters to prevent uneven chassis tilt.

Troubleshooting guidance

Consult your authorized distributor to check the compatibility list.

OE cross-reference

303.07.0057 (Levelling Valve) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number SV1381.

Technical Specifications

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

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
KNORR-BREMSE

FAQ

What is the primary function of this levelling valve?
It regulates air pressure within the suspension system to maintain consistent vehicle height and stability under different loads.
What are the technical port specifications?
This unit features M12x1.5 ports (Port 11 and Port 21) and is designed to operate at a pressure of 12 BAR.
What materials are used in these components?
The component is manufactured using high-strength components designed for heavy-duty grade service environments.
How can I identify if a replacement is needed?
Technicians should look for symptoms like uneven chassis height or air leaks near the M12x1.5 ports during routine inspections.
What are the OE reference numbers of this part?
303.07.0057 directly replaces Knorr-Bremse OE number SV1381.