3142 Views Updated 27 September 2026

20442353 SP1 Compatible Twin Cylinder Compressor for Volvo FH12

1300 050 006

Summary

High-performance water-cooled twin cylinder compressor designed for Volvo FH12 D12A engines. Features an Ø88.00 cylinder bore, 50 mm stroke, and M26x1,5 air outlet port to ensure reliable air pressure in heavy commercial vehicle braking systems. Equivalent to OE Volvo 20442353SP1.

Product identifiers
EAN Code	8699031049809

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Compatible OEM Codes

KNORR-BREMSE
- LP4960 SP1
- K000237X00 SP1
- K000237V SP1
- K000237C57 SP1
- K000237000 SP1
- II30899ATV SP1
- II30899 SP1
VOLVO
- 85000065 SP1
- 8157550 SP1
- 81128514 SP1
- 8112851 SP1
- 20442353 SP1

Description

What does a twin cylinder compressor do?

This twin cylinder compressor is a critical component of the pneumatic braking system, ensuring consistent air pressure delivery for heavy commercial vehicles. Built with high-strength components, it is specifically designed to handle the intense thermal and pressure loads required by modern air brake systems.

Vehicle and engine compatibility

This unit is engineered for Volvo FH12 models equipped with D12A engines. It features a water-cooled design with a water inlet/outlet port size of M16x1,5 to maintain optimal operating temperatures during continuous use.

Installation and maintenance guidance

Installation requires precise attention to the through-drive configuration and port alignment. Technicians should verify the Ø88.00 cylinder bore, the 50 mm stroke, and the M26x1,5 air outlet port dimensions before assembly. Ensure the M22x1,5 unloader port is correctly aligned to maintain system efficiency.

Troubleshooting and selection

When replacing this component, it is essential to match the existing unit's specifications exactly to avoid system mismatching. Proper maintenance of the water cooling lines and checking for leaks at the M29 air inlet port will help prolong the service life of this vital part.

OE cross-reference

1300 050 006 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20442353SP1.

Technical Specifications

Technical Specifications
Cylinder Bore	Ø88.00
Stroke	50 mm
Swept Volume	608cm³
Air Inlet Port	Ø29
Air Outlet Port	M26x1,5
Number of Cylinders	2
Through Drive	OK
Air Unloader Port	M22x1,5
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

Other OEMs

KNORR-BREMSE

K000237ES SP1
LP4960 SP1
K000237X00 SP1
K000237V SP1
K000237C57 SP1
K000237000 SP1
II30899ATV SP1
II30899 SP1

VOLVO

85000065 SP1
8157550 SP1
81128514 SP1
8112851 SP1
20442353 SP1

Compatible Vehicles

Compatible Vehicles
Brand	Model	Engine
KNORR-BREMSE
VOLVO
VOLVO	B10B	D10A
VOLVO	B10M	D10A
VOLVO	B12	D12A
VOLVO	F10	TD102
VOLVO	F12	TD122
VOLVO	FH12	D12A
VOLVO	FL10	D10A
VOLVO	FL10	TD102
VOLVO	FL10	TD103
VOLVO	FL12	TD122
VOLVO	FL12	TD123
VOLVO	NH12	D12A
VOLVO	NL10	D10A
VOLVO	NL12	D12A

FAQ

Can I install this compressor on a different engine?

Compatibility depends on the exact match of the drive gear, mounting flange, and port locations. Always verify the technical specifications like cylinder bore and stroke against the existing unit.

What type of cooling does this compressor require?

This specific model is a water-cooled unit featuring M16x1,5 water inlet and outlet ports to manage operating temperatures effectively.

How do I verify if this fits my vehicle?

Check the engine type (D12A) and vehicle model (FH12). It is vital to confirm that the outlet port size (M26x1,5) and unloader port (M22x1,5) match your current system.

What are common signs of compressor wear?

Technicians should look for unusual noise or loss of air pressure in the braking system, which may indicate issues with the valve plate or internal seals.

What are the OE reference numbers of this part?

1300 050 006 directly replaces Volvo OE number 20442353SP1.