Service parts for the 4KW BFA
Grouped by system, with how many of each the parts manual calls for.
Oil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Standby power | 4 kW |
|---|
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | Filter, Oil - Spin-On | 122-0645 | Amazon $14.11 eBay $11.99 |
Common questions
How many kW is the Cummins/Onan 4KW BFA?
The Cummins/Onan 4KW BFA is rated 4 kW standby.
What oil filter fits the Cummins/Onan 4KW BFA?
The Cummins/Onan 4KW BFA uses oil filter part number 122-0645.
Parts
33| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 101-0415 | Gasket, Bearing Plate | 1 | Gasket | Amazon eBay |
| 110-0068 | Gasket, Intake Valve Guide | 2 | Gasket | Amazon eBay |
| 120-0161 | Gasket Kit, Oil Pump | 1 | Gasket | Amazon eBay $10.95 |
| 120-0491 | Pump, Oil | 1 | Pump | Amazon eBay $30.00 |
| 122-0320 | Adapter, Oil Filter | 1 | Oil filter | Amazon Amazon eBay eBay |
| 122-0321 | Gasket, Oil Filter Adapter | 1 | Gasket | Amazon eBay |
| 122-0347 | Seal, Air - Oil Filter | 1 | Oil filter | Amazon eBay |
| 122-0645 | Oil Filter | 1 | Oil filter | Amazon $14.11 eBay $11.99 |
| 123-0191 | Gasket, Oil Fill Cap | 1 | Gasket | Amazon eBay |
| 140-1492 | Carburetor, Gasoline (See Separate Page For Components) (Includes Mounting Gasket) | 1 | Gasket | Amazon eBay |
| 146-0404 | Carburetor, LPG (Includes Mounting Gasket) | 1 | Gasket | Amazon eBay |
| 160-0558 | Nipple, Spark Plug Cable | 2 | Spark plug | Amazon eBay |
| 160-1150 | Gasket, Breaker Box Mounting | 1 | Gasket | Amazon eBay FridayParts $139.99 |
| 167-0298 | Plug, Spark | 2 | Spark plug | Amazon eBay $9.99 |
| 167-1602 | Cable, Spark Plug | 2 | Spark plug | Amazon eBay |
| 509-0041 | Seal, Bearing Plate | 1 | Seal | Amazon eBay |
| 110-0197 | Insert, Valve Seat - Intake | 2 | Service part / kit | Amazon eBay $27.99 |
| 110-1807 | Gasket, Intake Valve Guide | 1 | Service part / kit | Amazon eBay |
| 110-1824 | Bearing, Crankshaft - Rear (Standard .002" .010" .020" .030" Undersize) | 1 | Service part / kit | Amazon eBay |
| 120-0140 | Spring, Bypass Valve | 1 | Service part / kit | Amazon $2174.00 eBay FridayParts $1096.58 |
| 120-0735 | Tube, Oil Crankcase | 2 | Service part / kit | Amazon eBay |
| 154-1762 | Manifold, Exhaust | 1 | Service part / kit | Amazon eBay |
| 160-1151 | Plunger, Breaker Points | 1 | Service part / kit | Amazon eBay |
| 160-1183 | Point Set, Breaker | 1 | Service part / kit | Amazon $15.46 eBay $29.95 |
| 160-1311 | Tune Up Kit (Includes Points and Condenser) | 1 | Service part / kit | Amazon eBay |
| 166-0772 | Coil, Ignition | 1 | Service part / kit | Amazon eBay |
| 312-0051 | Condenser, Ignition (.5 MFD) | 1 | Service part / kit | Amazon eBay |
| 336-3377 | Lead, Electrical - Low Oil Pressure Switch | 1 | Service part / kit | Amazon eBay |
| 502-0053 | 50!5-0057 0ESCRIPTIU4 W~#mi, Flat Copper (5/16” | 2 | Service part / kit | Amazon eBay |
| 504-0092 | Valve, Oil Drain | 1 | Service part / kit | Amazon eBay |
| 800-0007 | Plug, Oil Drain | 2 | Service part / kit | Amazon eBay |
| 801-0050 | Screw, Cap - Hex Head (3/8-24 X 1") | 1 | Service part / kit | Amazon eBay |
| 821-0010 | Screw, Self -1ocking - Hex Washer Head (1/4-20 x 1/2') | 1 | Service part / kit | Amazon eBay |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Parts manual — 965-0262 Onan 4KW BFA (spec C-D) Utility Vehicle Genset Parts manual (01-1988) (Cummins/Onan)