Piston ring set for Cummins engines

The 4090028 piston ring set consists of sealing components engineered for Cummins diesel engines. These rings fit into the piston grooves to maintain combustion chamber pressure, scrape excess oil from the cylinder walls to control consumption, and assist in heat dissipation from the piston to the engine block. The set typically includes a top compression ring, a second compression ring, and an oil control ring, each configured to maintain a seal against the cylinder wall during operation.

This component is compatible with various Cummins engine models used in heavy machinery, industrial cranes, and power generation equipment. Cummins is the manufacturer of this part. The rings are designed to operate within the specific pressure and temperature parameters of the combustion chamber to ensure proper engine function.

Piston rings are critical for maintaining engine compression and preventing blow-by gases from entering the crankcase. By managing the oil film on the cylinder liner, they prevent excessive oil burning and carbon buildup. Proper ring tension and fitment are necessary to ensure the engine maintains its intended power output and operational efficiency throughout its service life.