Mercedes-Benz
Cylinder head for Mercedes-Benz OM447 HLA
This cylinder head is designed for the Mercedes-Benz OM447 HLA and OM611 engine series. It mounts to the top of the engine block to seal the cylinders and form the combustion chambers.
Specifications
- Part number
- A9040103021
- Brand
- Mercedes-Benz
The cylinder head A9040103021 serves as the upper closure for the engine block in Mercedes-Benz OM447 HLA and OM611 engines. It seals the cylinders to create the combustion chambers where the air-fuel mixture ignites. The component houses the intake and exhaust valves, valve seats, and valve guides. It also contains integrated channels for coolant and oil circulation, along with designated mounting points for fuel injectors and spark plugs.
This part is compatible with the Mercedes-Benz OM447 HLA and OM611 engine models. It maintains the necessary engine compression required for power output, fuel efficiency, and emission control. By providing a precise seal, the component prevents the leakage of combustion gases, engine oil, and coolant between the block and the head.
In heavy machinery and industrial engines, the cylinder head is a critical assembly that manages the thermal and mechanical stresses of the combustion process. It acts as the primary interface for gas exchange and fluid management within the engine block, ensuring that the internal pressure remains contained during operation.

