Service parts for the 4MDKBH
Grouped by system, with how many of each the parts manual calls for.
Fuel system
1 requiredOil system
1 requiredBelts
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | diesel |
|---|---|
| Frequency | 50.0 Hz |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | Filter Assy, Fuel (Includes Plug and Base) | 149-2634-01 | Amazon eBay | ||
| Oil filter | Filter, Oil | 185-7444 | Amazon $30.33 eBay $29.95 KuduParts $11.00 | ||
| Belt | Belt (6 Rib) MC | 511-0196 | Amazon eBay |
Common questions
What kind of fuel does the Cummins/Onan 4MDKBH run on?
The Cummins/Onan 4MDKBH runs on diesel.
Which oil filter part number does the Cummins/Onan 4MDKBH take?
The Cummins/Onan 4MDKBH uses oil filter part number 185-7444.
Which fuel filter part number does the Cummins/Onan 4MDKBH take?
The Cummins/Onan 4MDKBH uses fuel filter part number 149-2634-01.
Parts
47| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 149-2106 | Fuel Filter Element | 1 | Fuel filter | Amazon $15.99 eBay $34.99 KuduParts $68.00 |
| 149-2634-01 | Filter Assy, Fuel (Includes Plug and Base) | 1 | Fuel filter | Amazon eBay |
| 149-2646 | Pump, Fuel MC | 1 | Pump | Amazon eBay $28.40 FridayParts $33.99 |
| 181-9165 | Pump, Oil | 1 | Pump | Amazon eBay |
| 181-9170 | Cord, Glow Plug | 1 | Glow plug | Amazon eBay |
| 185-5348 | Seal, Valve Stem | 4 | Seal | Amazon eBay |
| 185-5410 | Seal, Oil | 1 | Seal | Amazon eBay |
| 185-5413 | Gasket, Oil Pump | 1 | Gasket | Amazon eBay |
| 185-5421 | Plug, Glow | 4 | Glow plug | Amazon eBay $35.00 |
| 185-5422 | Pump Assy, Injection | 1 | Pump | Amazon eBay |
| 185-5622 | Nozzle | 2 | Injector | Amazon eBay KuduParts $2035.00 |
| 185-5641 | Gasket, Delivery Valve | 3 | Gasket | Amazon eBay |
| 185-5985 | Seal, Heat | 3 | Seal | Amazon eBay |
| 185-7444 | Oil Filter | 1 | Oil filter | Amazon $30.33 eBay $29.95 KuduParts $11.00 |
| 193-0244 | Sender, Pressure - 0i1 | 1 | Sensor | Amazon eBay |
| 193-0388 | Sender, Water Temperature MC | 1 | Sensor | Amazon eBay |
| 193-0430-01 | Sender, Oil Pressure MC (Isolated Ground) | 1 | Sensor | Amazon eBay $339.95 |
| 193-0491 | Sender, Water Temperature MC (Isolated Ground) | 1 | Sensor | Amazon eBay |
| 403-3860 | Seal, Fuel Pump | 1 | Seal | Amazon eBay |
| 502-1359 | Elbow, 90 Coolant Drain | 1 | Hose | Amazon eBay |
| 503-2200-01 | Hose, Fuel (191.4mm) MC | 1 | Hose | Amazon eBay |
| 503-2200-02 | Hose, Fuel (336.8mm) MC | 1 | Hose | Amazon eBay |
| 503-2200-03 | Hose, Fuel (849.9mm) MC | 1 | Hose | Amazon eBay |
| 503-2200-04 | Hose, Fuel (784mm) MC | 1 | Hose | Amazon eBay |
| 503-2309 | Clamp, Hose | 16 | Hose | Amazon eBay |
| 511-0196 | Belt (6 Rib) MC | 1 | Belt | Amazon eBay |
| 110-3990 | Valve, Inlet (Begin Spec C) | 2 | Service part / kit | Amazon eBay |
| 110-3991 | Valve, Exhaust (Begin Spec C) | 2 | Service part / kit | Amazon eBay |
| 184-0030 | Ring Assy, Piston Standard | 2 | Service part / kit | Amazon eBay |
| 184-0032 | Piston Standard | 2 | Service part / kit | Amazon eBay $149.00 |
| 185-5509 | Spring | 1 | Service part / kit | Amazon eBay |
| 185-5510 | Seat, Valve | 1 | Service part / kit | Amazon eBay |
| 185-5537 | Valve, Inlet (Spec A-B) | 2 | Service part / kit | Amazon eBay |
| 185-5538 | Valve, Exhaust (Spec A-B) | 2 | Service part / kit | Amazon eBay |
| 185-5568 | Pin, Piston | 2 | Service part / kit | Amazon eBay |
| 185-5583 | Slinger, Oil | 1 | Service part / kit | Amazon eBay |
| 185-5617 | Spring | 2 | Service part / kit | Amazon eBay |
| 185-5639 | Valve, Delivery | 2 | Service part / kit | Amazon eBay |
| 185-5640 | Spring, Delivery Valve | 2 | Service part / kit | Amazon eBay |
| 185-5642 | Holder, Delivery Valve | 2 | Service part / kit | Amazon eBay |
| 185-5651 | Wire, Retainer | 1 | Service part / kit | Amazon eBay |
| 185-5652 | Spring, Plunger | 2 | Service part / kit | Amazon eBay |
| 185-5653 | Seat, Upper Spring | 2 | Service part / kit | Amazon eBay |
| 185-5654 | Seat, Lower Spring | 2 | Service part / kit | Amazon eBay |
| 185-5659 | Sleeve, Control | 2 | Service part / kit | Amazon eBay |
| 509-0442 | Washer, Sealing (Spec A) | 1 | Service part / kit | Amazon eBay |
| 509-0549 | Washer, Sealing (Begin Spec C) | 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 — 981-0282 Onan MDKBH Parts Manual (9-2014) (Cummins/Onan)