Service parts for the 9MDKBG
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Element, Breather | 185-6721 | Amazon eBay |
Common questions
Is the Cummins/Onan 9MDKBG diesel or gas?
The Cummins/Onan 9MDKBG runs on diesel.
What air filter does the Cummins/Onan 9MDKBG use?
The Cummins/Onan 9MDKBG uses air filter part number 185-6721.
Parts
41| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 185-2285 | Pump, Water | 1 | Pump | Amazon eBay |
| 185-2338 | *Gasket | 1 | Gasket | Amazon eBay |
| 185-5421 | Plug, Glow | 4 | Glow plug | Amazon eBay $35.00 |
| 185-6558 | Gear, Injection Pump | 1 | Pump | Amazon eBay |
| 185-6740 | Holder Assy, Nozzle | 3 | Injector | Amazon eBay |
| 185-6866 | Indicator, Oil Level | 1 | Sensor | Amazon eBay |
| 185-6882 | Pump Assy, Injection (See Separate Page for Components) | 1 | Pump | Amazon eBay |
| 185-7104 | Starter (12V) | 1 | Starter | Amazon eBay $329.90 FridayParts $167.31 |
| 185-7105 | Starter (24V) | 1 | Starter | Amazon eBay |
| 185-7107 | 24V Glow Plugs | 3 | Glow plug | Amazon eBay |
| 507-0011 | Gear, Injection Pump | 1 | Fuel pump | Amazon eBay |
| 100-3616-01 | Engine Assy, Replacement (12V) | 1 | Service part / kit | Amazon eBay |
| 100-3616-02 | Engine Assy, Replacement (24V) | 1 | Service part / kit | Amazon eBay |
| 100-3944-01 | Engine Assy, Replacement (12V) | 1 | Service part / kit | Amazon eBay |
| 100-3944-02 | Engine Assy, Replacement (24V) | 1 | Service part / kit | Amazon eBay |
| 105-0744 | Camshaft Assy | 1 | Service part / kit | Amazon eBay |
| 112-0302 | Piston | 3 | Service part / kit | Amazon eBay |
| 185-2115 | Pin, Pipe | 2 | Service part / kit | Amazon eBay |
| 185-5924 | Ball | 3 | Service part / kit | Amazon eBay |
| 185-6121 | Plug, Expansion | 3 | Service part / kit | Amazon eBay $5.99 |
| 185-6472 | Bush, Governor Gear | 1 | Service part / kit | Amazon eBay |
| 185-6516 | Tappet | 6 | Service part / kit | Amazon eBay |
| 185-6521 | Gear Assy, Idle (Includes Bushing) | 1 | Service part / kit | Amazon eBay |
| 185-6531 | Pin, Piston | 3 | Service part / kit | Amazon eBay |
| 185-6543 | Sleeve, Crankshaft | 1 | Service part / kit | Amazon eBay |
| 185-6546 | Bearing, Crankshaft | 1 | Service part / kit | Amazon eBay |
| 185-6549 | Bearing, Crankshaft | 2 | Service part / kit | Amazon eBay |
| 185-6578 | Cover, Solenoid | 1 | Service part / kit | Amazon eBay |
| 185-6681 | Valve, Inlet | 3 | Service part / kit | Amazon eBay |
| 185-6682 | Valve, Exhaust | 3 | Service part / kit | Amazon eBay FridayParts $294.80 |
| 185-6683 | Spring, Valve | 6 | Service part / kit | Amazon eBay |
| 185-6721 | Breather Filter Element | 1 | Service part / kit | Amazon eBay |
| 185-6867 | Cover Assy, Cylinder Head | 1 | Service part / kit | Amazon eBay |
| 185-6873 | Camshaft Assy | 1 | Service part / kit | Amazon eBay |
| 185-7217 | Flywheel (Includes Ring Gear) | 1 | Service part / kit | Amazon eBay |
| 185-7308 | Piston | 3 | Service part / kit | Amazon eBay |
| 185-7310 | Ring Assy, Piston, Standard | 3 | Service part / kit | Amazon eBay |
| 185-7372 | Block, Cylinder | 1 | Service part / kit | Amazon eBay |
| 185-7374 | Head Assy, Cylinder | 1 | Service part / kit | Amazon eBay |
| 185-7376 | Crankshaft | 1 | Service part / kit | Amazon eBay |
| 333-0719 | Cover, Solenoid (24V) | 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 — 981-0272 Onan MDKBG Parts Manual (8-2011) (Cummins/Onan)