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13 21 50 Compressor Cylinder Head, Air Brake Compressors

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13 21 50 Compressor Cylinder Head for Volvo Trucks

13 21 50

Summary

This cylinder head is designed for heavy commercial vehicle air brake compressors. It is compatible with Volvo models such as FL12, FH12, and B10M, ensuring precise air compression for Volvo and Knorr-Bremse systems. Built with high-strength components to withstand heavy-duty service conditions. Equivalent to OE Knorr-Bremse LK3509S2 and Volvo 6772238S2.

Product identifiers
EAN Code8699031032849
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Compatible OEM Codes

  • VOLVO
    • 8112248 S2
    • 6795599 S2
    • 6772238 S2
  • KNORR-BREMSE
    • LK3509 S2

Description

What does a compressor cylinder head do?

The cylinder head serves as a critical component within the air brake compressor assembly, managing the combustion or compression chamber environment to ensure consistent air pressure delivery. This part is engineered to maintain structural integrity under the high-pressure cycles required by heavy commercial vehicle braking systems.

Compatible Volvo engines and models

This component is specifically compatible with several Volvo engine series, including the D10A, D12A, and TD122 engines. It fits a wide range of heavy-duty applications, such as Volvo FL10, FL12, NL12, B10B, B10M, FH12, F12, B12, NL10, NH12, and F10 models. It is also designed to work seamlessly with Knorr-Bremse systems.

Installation and maintenance guidance

Technicians should inspect the cylinder head for signs of thermal stress or surface erosion during routine compressor maintenance. Proper installation ensures that the valve seating remains airtight, preventing pressure drops in the pneumatic circuit. Always verify fitment against the existing compressor architecture before replacement.

Maintenance and troubleshooting

When replacing this part, ensure that all gaskets and seals are in optimal condition to prevent air leaks. Maintaining a clean mounting surface is essential for ensuring the longevity of the compressor assembly in demanding fleet environments.

OE cross-reference

13 21 50 (Compressor Cylinder Head) is the equivalent of the Knorr-Bremse and Volvo OE numbers. This part directly replaces Knorr-Bremse OE number LK3509S2. It also replaces Volvo OE numbers 6772238S2, 6795599S2, 8112248S2.

Other OEMs

KNORR-BREMSE

  • LK3509 S2

VOLVO

  • 8112248 S2
  • 6795599 S2
  • 6772238 S2

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
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

What is the function of this cylinder head?
The cylinder head seals the top of the compressor cylinder, creating a controlled chamber for air compression essential for the vehicle's braking system.
Which Volvo engines are compatible with this part?
This part is designed for various Volvo engines including the D10A, D12A, TD103, TD123, TD122, and TD102 series.
Can this be used with Knorr-Bremse systems?
Yes, this component is designed to be compatible with Knorr-Bremse systems used in heavy commercial vehicle air brake assemblies.
How can I know if my cylinder head needs replacement?
Technicians should look for symptoms like excessive oil in the air lines or a drop in pneumatic pressure which may indicate a faulty cylinder head.
What are the OE reference numbers of this part?
13 21 50 directly replaces Knorr-Bremse OE number LK3509S2. It also replaces Volvo OE numbers 6772238S2, 6795599S2, 8112248S2.