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kz4331rm KNORR-BREMSE Twin Cylinder, Air Compressor

1300 130 001

Summary

●Cylinder Bore: Ø75.00 ●Stroke: 50 mm ●Swept Volume: 440cm³ ●Air Inlet Port: M26x1,5 ●Air Outlet Port: M26x1,5 ●Number of Cylinders: 2 ●Through Drive: OK ●Water (W) or Air (A) Cooled: W ●Water Inlet Port: M16x1,5 ●Water Outlet Port: M16x1,5 ●With ESS Feature: OK ●Water Cooled Valve Plate: OK ●Weight: 22,6 KG

EAN Code	8699031048994

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Description

The heavy-duty twin cylinder air compressor is a critical component designed to provide consistent pneumatic pressure within the braking and suspension systems of heavy commercial vehicles. This unit ensures reliable air production through its precision-engineered dual-cylinder architecture, maintaining stable performance under demanding operational conditions.

KZ4331RM is the OE-equivalent of the KNORR-BREMSE KZ433/1RM Twin Cylinder, Air Compressor used in KNORR-BREMSE systems. This component features a 75.00 mm cylinder bore and a 50 mm stroke, providing a swept volume of 440cm³. It is specifically engineered for high-strength performance within heavy-duty pneumatic networks.

Workshop technicians should note that this water-cooled model includes an ESS feature and a water-cooled valve plate to manage thermal loads effectively. The assembly features M26x1,5 air ports and M16x1,5 water ports for precise integration. Regular maintenance of the cooling lines and checking the through-drive integrity are essential for long-term serviceability in professional workshop environments.

Designed for seamless integration, this compressor maintains high-strength functionality within the air brake system. The technical specifications ensure it meets the rigorous requirements of heavy commercial vehicle maintenance and parts replacement.

Technical Specifications

Cylinder Bore	Ø75.00
Stroke	50 mm
Swept Volume	440cm³
Air Inlet Port	M26x1,5
Air Outlet Port	M26x1,5
Number of Cylinders	2
Through Drive	OK
Water (W) or Air (A) Cooled	W
Water Inlet Port	M16x1,5
Water Outlet Port	M16x1,5
With ESS Feature	OK
Water Cooled Valve Plate	OK
Weight	22,6 KG

Other OEMs

KNORR-BREMSE

VOLVO

Vehicles Used

Brand	Model	Engine
KNORR-BREMSE
VOLVO

FAQ

What is the compatibility of the kz4331rm air compressor?

The kz4331rm is a direct OE-equivalent for the KNORR-BREMSE KZ433/1RM system, ensuring perfect fitment for heavy commercial vehicle pneumatic systems.

Does this unit feature water cooling for thermal management?

Yes, this model is water-cooled (W) and includes a water-cooled valve plate to maintain optimal operating temperatures during heavy-duty use.

What are the technical port specifications for this compressor?

The unit features an Air Inlet Port of M26x1,5, an Air Outlet Port of M26x1,5, and Water Inlet/Outlet Ports of M16x1,5.

Is the ESS feature included in this twin cylinder model?

Yes, this product is equipped with the ESS feature and supports a through-drive configuration for reliable mechanical synchronization.

Which OEM part number does this replace?

This part is designed as an OE equivalent for the KNORR-BREMSE KZ433/1RM air compressor system.