The lubrication system delivers oil under pressure to all moving components within a Cummins engine — crankshaft bearings, camshaft journals, piston cooling nozzles, turbocharger bearings, rocker assemblies, and gear trains. The oil pump draws oil from the sump through a pickup screen, pressurises it, and distributes it through internal galleries and external oil tubes. The oil cooler maintains lubricant temperature, while the oil filter removes contaminants before they reach bearing surfaces. Components such as the oil pan, dipstick tube, oil filler cap, crankcase breather, and various seals and gaskets all contribute to keeping the lubrication circuit sealed and functioning correctly.
AMS Parts supplies a wide range of oil & lubrication components for Cummins engines used in power generation, marine, and industrial applications. Browse a selection of available parts below, or contact us for specific requirements.
Below is a selection of oil & lubrication parts we supply. Use the search bar above to find a specific part number, or request a quote. You can also reach us directly at [email protected] or +44 7776 800169.
Oil change intervals depend on the engine model, duty cycle, fuel quality, and oil specification. Cummins publishes recommended intervals in the operation and maintenance manual — typically between 250 and 500 hours for many generator and industrial applications. An oil analysis programme can help extend intervals safely where conditions allow.
The crankcase breather vents combustion gases (blowby) that pass the piston rings, preventing excessive crankcase pressure which could force oil past seals. A blocked or failed breather can cause oil leaks, increased oil consumption, or oil being pushed out of the dipstick tube. Inspect and replace at intervals specified in the service manual.
Incorrect viscosity can cause poor oil flow at startup (too thick) or insufficient film strength at operating temperature (too thin). Both conditions can accelerate bearing wear. Cummins specifies oil grades by engine model and ambient temperature range — always follow the recommendation in the operation manual.
