The Cummins/Onan 6CT8.3 engine line groups 4 variant designations. Parts and fitment are pooled here so a cross-reference found on one variant surfaces for the whole family.
| Part # | Description | Category |
|---|---|---|
| 140-2240 | Cleaner, Air - Includes Element(s) | air_filter |
| 140-2241 | Element, Air Cleaner - Standard (Outer) | air_filter |
| 140-2252 | Element, Air Cleaner - Heavy Duty (Inner) | air_filter |
| B-45 | CHECKING BATTERY | battery |
| 2278784 | Fuel pump-governor combination | fuel_filter |
| DM-3801373 | Gasket Set - 6CT 8.3 | gasket |
| FP-6C83PREM | 6C/6CT8.3 In-Frame Kit w/upper gasket set & oil pan gasket | gasket |
| FP-IFK6C83PREM | 6C/6CT8.3 In-Frame Kit w/upper gasket set & oil pan gasket | gasket |
| 502-1265 | Hose, Drain | hose |
| 503-0183 | Clamp, Hose | hose |
| DM-3928389 | Fuel Injector - 6CT 8.3 | injector |
| 19507 | Allison 4-Speed Trans Oil Change | oil |
| 30363 | Allison 6-Speed Trans Oil Change | oil |
| 19095 | Oil & Filter Change | oil_filter |
| 19096 | Oil & Filter Change, Fuel Filter | oil_filter |
| LF3000 | Lube, Spin-On | oil_filter |
| LS1174s | OIL FILTER | oil_filter |
| 19097 | Complete Service | other_service |
| 19098 | Complete Service & Check | other_service |
| 19472 | Change Differential Oil | other_service |
| 850-2008 | Heater, Engine Coolant | other_service |
| DM-3802010 | Main Bearing Set Standard - 4BT 3.9, 6BT 5.9, 6CT 8.3 | other_service |
| DM-3802439 | Piston Ring Set - 6CT 8.3 | other_service |
| FP-3356824 | 6C/6CT8.3 In-Frame Kit (contains FP-3802403 Cyl Kit) | other_service |
| FP-3356825 | 6C/6CT8.3 In-Frame Kit (contains FP-3802404 Cyl Kit) | other_service |
| FP-3356826 | 6C/6CT8.3 In-Frame Kit (contains FP-3802406 Cyl Kit) | other_service |
| FP-3356827 | 6C/6CT8.3 In-Frame Kit (contains FP-LK92479937 Cyl Kit) | other_service |
| FP-3357573 | 6C/6CT8.3 In-Frame Kit (contains FP-3802263 Piston Kit) | other_service |
| FP-3357574 | 6C/6CT8.3 In-Frame Kit (contains FP-3802601 Piston Kit) | other_service |
| FP-3357803 | 6C/6CT8.3 In-Frame Kit (contains FP-3802344 Piston Kit) | other_service |
| M-5316172 | Valve Spring | other_service |
| M-5316173 | Valve Spring | other_service |
| 308-0913 | Kit, Repair - Fuel Tank Pump (includes Lip Seal, Bearings, Gasket, Drive Gear, Idle Gear, Coupler) | pump |
| 399-0117 | Pump, Fuel Tank (P103) | pump |
| 193-0448 | Sender, Oil Pressure (Includes Parts Marked *) | sensor |
| 309-0553 | Switch, Temperature - Low Engine Coolant (S4) | sensor |
| 309-0554 | Switch, Oil Pressure - 20 PSI (S5 Pre-Alarm) | sensor |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.