The Cummins/Onan 6CT engine line groups 2 variant designations. Parts and fitment are pooled here so a cross-reference found on one variant surfaces for the whole family.
| Part # | Description | Category |
|---|---|---|
| 140-2241 | Element, Air Cleaner Primary (Outer) | air_filter |
| 140-2251 | Element, Air Cleaner Secondary (Inner) | air_filter |
| 3911571 | Belt, Drive - Fan & Altr (6CTA Engine) | belt |
| 3911573 | Belt, Drive - Fan & Altr (6CT Engine) | belt |
| 130-3537 | Filter, Water - W/Corosion Inhibiting Chemical DCA4 | coolant_filter |
| 130-3539 | Filter, Water - Service Pre-Charging | coolant_filter |
| 149-2251 | Filter, Fuel - Secondary | fuel_filter |
| 149-2252 | Filter, Fuel - Primary | fuel_filter |
| 102-1147 | Gasket, Drain - Oil Pan | gasket |
| 501-0441 | Line, Fuel - Flex (Fuel In) | hose |
| 501-0502 | Line, Fuel - Flex (Fuel Out) | hose |
| 503-009B | Hose | hose |
| 503-1595 | Hose | hose |
| 122-0756 | Element - Oil Filter | oil_filter |
| 249-0281 | Diode, Forward Polarity | other_service |
| 249-0283 | Diode, Reverse Polarity | other_service |
| 249-0294 | Varister | other_service |
| 321-0094 | Fuse, Cartridge - 5 Amp (F4, F5) | other_service |
| 321-0231 | Fuse, Cartridge - 15 Amp (F3) | other_service |
| 321-0270 | Fuse, Cartridge - 20 Amp (F1, F2) | other_service |
| 322-0017 | Lamp, Incandescent - 28 VDC (DS11) | other_service |
| 322-0369-02 | Lamp, Incandescent - 1/3 Watt 28 VDC | other_service |
| 150-0956 | COVER, FLYWHEEL GUARD | sensor |
| 150-1406 | Sensor, Speed | sensor |
| 150-2201 | Sensor, Speed | sensor |
| 193-0244 | Sender, Pressure - Oil (E1) | sensor |
| 193-0353 | Sender, Temperature - 0il(E4) | sensor |
| 193-0375 | Sender, Temperature - Engine Coolant (E2) | sensor |
| 309-0269 | Air Cleaner (Includes Element) - Standard | sensor |
| 309-0272 | Air Cleaner - Heavy Duty (10" Inlet Tube) | sensor |
| 309-0553 | Switch, Thermostatic - Engine Coolant Temperature, Pre-Alarm (S6) | sensor |
| 309-0554 | Switch, Thermostatic-Engine Coolant Temperature (S2) | sensor |
| 309-0555 | Switch, Thermostatic | sensor |
| 309-0561 | Switch, Pressure - Oil, Pre-Alarm (S5) | sensor |
| 309-0128 | Thermostat, Adjustable | thermostat |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.