This is a diesel engine piston from the Cummins C-Series 8.3 L family, specifically for 6CTA8.3 turbocharged/aftercooled configurations. It is located in the engine cylinder/cylinder block. Its function is to transfer combustion pressure through the connecting rod to the crankshaft. It is made of an aluminum-alloy diesel piston; it features ALFIN’s reinforced ring-area configuration.
Engine: Cummins 6CTA8.3 / C8.3, selected CPLs
Verification using CPL/ESN is particularly important because, within the C-Series 8.3 family itself, there are pistons that look similar but have different applications and combustion geometries.
Identifies a piston pin retaining ring. It is a small but essential component of the piston-connecting rod assembly and is typically installed in pairs per piston, one on each side of the pin. Its function is to axially secure the piston pin within the piston seats. Spring-steel retaining ring.
It has a wide range of applications in the Cummins C / ISC / QSC / ISL / QSL / L family.
It is an internal nozzle in the lubrication system that sprays engine oil toward the bottom of the piston; it draws oil from the engine block’s lubrication gallery and directs a jet toward the underside of the piston. It is installed inside the cylinder block, in the lower part of the cylinders, facing the underside of the piston. This component is typically made of metallic materials suitable for the oil circuit and the engine’s internal temperatures.
Typically used on Cummins 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL 8.9 / 9, ISL Natural Gas, and QSL 8.9 / 9 engines.
Before placing an order, I always recommend checking the Cummins ESN (Engine Serial Number), CPL, and QuickServe catalog, because the same QSL/ISC/ISL model may use different nozzle variants depending on the year and configuration.