Cummins QSK78 Engine Parts
Cummins QSK78 Engine Parts
OWELL supplies Cummins QSK78 engine parts for generator sets and industrial applications, covering routine maintenance, engine repair and complete overhaul requirements.
Cummins QSK78 Engine Models
Parts supply for commonly used QSK78 engines, including:
QSK78-G6 · QSK78-G8 · QSK78-G9 · QSK78-G12 · QSK78-G15
Other QSK78 configurations are also supported.
Part compatibility can be verified by ESN, CPL or part number when required.
Cummins QSK78 Parts Range
Overhaul Parts
Pistons, piston rings, piston kits, cylinder liners, liner kits, main bearings, connecting rod bearings, gasket kits, cylinder heads, valves, valve guides and other engine overhaul parts.
Fuel Injection System Parts
Fuel injectors, fuel pumps, HPI-PT and MCRS fuel system components for applicable engine configurations, fuel lines and related parts.
Cooling & Lubrication Parts
Water pumps, water pump repair kits, oil pumps, oil coolers, aftercooler cores, thermostats, seals and related components.
Turbocharger & Air System Parts
Turbochargers, turbocharger repair kits, charge-air system components, intake manifolds and related parts.
Electronic Control & Electrical Parts
Engine Control Modules (ECM), sensors, actuators, wiring harnesses, starter motors, charging alternators and related electrical components.
Maintenance Parts
Oil filters, fuel filters, fuel/water separators, air filters, belts, hoses, seals and other routine maintenance parts.
Popular Cummins QSK78 Parts
| Part Description | Part Number |
|---|---|
| Fuel Injector | 4326639 |
| Engine Piston Kit | 4955737 |
| Cylinder Liner Kit | 4955679 |
| Piston Ring Set | 4025382 |
| Main Bearing Set (STD) | 4089937 |
| Connecting Rod Bearing | 4007511 |
| Lower Engine Gasket Set | 4955391 |
| Water Pump | 3641576 |
| Aftercooler Core | 3641079 |
| Turbocharger Kit | 4089708 |
Part numbers are for reference only and may be updated or superseded. Final compatibility will be confirmed before ordering.
QSK78 Overhaul Parts
Planning a Cummins QSK78 engine overhaul?
OWELL supplies QSK78 overhaul and rebuild parts for partial repairs and complete engine overhauls.
Our supply covers piston kits, cylinder liner kits, bearings, gasket kits, cylinder head components, fuel injection system parts and other essential overhaul components.
Complete parts lists are welcome for quotation.
Genuine & Aftermarket QSK78 Parts
Genuine Cummins Parts
Original Cummins parts with identifiable packaging and anti-counterfeit information where applicable.
High-Quality Aftermarket Parts
Selected QSK78 parts are also available as reliable and cost-effective aftermarket options.
Genuine and aftermarket options can be quoted separately according to project requirements.
Request a Quote
Need Cummins QSK78 engine parts?
Contact OWELL for pricing, availability and worldwide supply.
Join Our Community, Subscribe for Updates!