Perkins
Piston for Perkins 4.248
This piston is designed for the Perkins 4.248 diesel engine. It serves as the primary component for converting combustion energy into mechanical motion within the engine block.
Compatible models
Specifications
- Part number
- 740821Z91
- Brand
- Perkins
The piston 740821Z91 functions as the moving boundary within the cylinder of the Perkins 4.248 diesel engine. It compresses the air-fuel mixture during the compression stroke and receives the force generated by the combustion process, transferring this energy to the connecting rod and crankshaft to produce mechanical power.
This component is compatible with the Perkins 4.248 engine model. It features precise grooves to accommodate piston rings, which maintain cylinder compression and manage oil control across the cylinder wall surface. The design ensures the component fits correctly within the bore to facilitate heat transfer from the combustion chamber to the engine cooling system.
In internal combustion engines, pistons are tasked with maintaining a seal against high-pressure gases while reciprocating at high speeds. Proper fitment of the piston assembly ensures that the engine maintains its intended compression ratio and operational efficiency during the power stroke.

