Mercedes-Benz
Piston for Mercedes-Benz OM421
This piston is designed for use in Mercedes-Benz OM421 engines. It serves as the primary moving component within the cylinder assembly to facilitate engine operation.
Compatible models
Specifications
- Part number
- 0038290
- Brand
- Mercedes-Benz
The piston 0038290 functions as the moving boundary within the engine cylinder, converting the energy released during fuel combustion into linear motion. This force is transferred to the crankshaft via the connecting rod to generate mechanical power for the machine. The component features specific grooves designed to accommodate piston rings, which maintain the seal of the combustion chamber and regulate oil distribution along the cylinder wall.
This part is compatible with the Mercedes-Benz OM421 engine series. It is engineered to meet the dimensional and functional requirements of the combustion cycle, including the management of pressure and thermal transfer within the engine block.
In internal combustion engines, the piston is responsible for compressing the air-fuel mixture and receiving the force of the expansion stroke. Proper fitment and structural integrity are necessary to maintain compression levels and ensure the efficient conversion of chemical energy into the mechanical output required for heavy machinery operations.

