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
| 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 eBay $29.95 NAPA $9.09 KuduParts $11.00 FridayParts $13.23 | ||
| Belt | Belt (6 Rib) MC | 511-0196 | Amazon eBay |
Common questions
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
148| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 101-0846 | Gasket, Bearing Case | 1 | Gasket | eBay |
| 103-0860 | Gasket, Gearcase | 1 | Gasket | eBay |
| 115-0516 | Gasket, Rocker Cover | 1 | Gasket | eBay |
| 130-5139 | Gasket, Heat Exchanger | 1 | Gasket | eBay |
| 130-5170 | Gasket, End Cover | 1 | Gasket | eBay |
| 132-0407 | Impeller, Pump | 1 | Impeller | eBay |
| 132-0410 | O'Ring | 1 | Seal | eBay |
| 132-0415 | Kit, Water Pump Service (Includes Impeller and O'Ring) | 1 | Impeller | Amazon eBay $54.95 |
| 132-0430 | Pump, Water | 1 | Pump | eBay $200.06 FridayParts $274.12 |
| 132-0492 | Pump Assy, Water | 1 | Pump | eBay |
| 132-0493 | Impeller | 1 | Impeller | eBay |
| 132-0517 | Gasket, Water Pump | 1 | Gasket | eBay FridayParts $12.06 |
| 149-1908-05 | Separator, Fuel/Water | 1 | Fuel filter | Amazon eBay |
| 149-1914-01 | Element (Includes Seals) | 1 | Fuel filter | Amazon eBay FridayParts $42.99 |
| 149-2045 | O-Ring Kit (Includes Seal and Plunger) | 1 | Seal | Amazon eBay |
| 149-2047 | Pump Assy (Includes Plunger, Retainer, Shaft, Check Ball, Knob and Screw) | 1 | Pump | Amazon eBay |
| 149-2073 | Kit, Remote Fuel/Water Separator | 1 | Fuel filter | eBay |
| 149-2106 | Element | 1 | Fuel filter | Amazon eBay $34.99 NAPA $61.61 KuduParts $68.00 |
| 149-2634-01 | Assy Filter, Fuel (Includes Parts Marked *) | 1 | Fuel filter | Amazon eBay |
| 149-2646 | Pump, Fuel | 1 | Pump | Amazon eBay $28.40 FridayParts $33.99 |
| 155-3061 | Gasket, Exhaust (Mixer) | 1 | Gasket | Amazon eBay |
| 155-3720 | Gasket, Exhaust MC | 1 | Gasket | eBay |
| 181-9048 | Gasket, Inlet Manifold | 1 | Gasket | eBay |
| 181-9059 | Gasket, Water Flange | 1 | Gasket | eBay |
| 181-9065 | Gasket, Bearing Case | 1 | Gasket | eBay |
| 181-9080 | Pump Assy, Injection | 1 | Pump | eBay |
| 181-9084 | Kit Holder, Nozzle | 1 | Injector | eBay |
| 181-9165 | Pump, Oil | 1 | Pump | Amazon eBay |
| 181-9170 | Cord, Glow Plug | 1 | Glow plug | Amazon eBay |
| 181-9246 | Gasket, Rocker Cover | 1 | Gasket | eBay |
| 184-0015 | O'Ring | 3 | Seal | Amazon eBay |
| 184-0017 | O'Ring | 1 | Seal | Amazon eBay |
| 184-0019 | O'Ring | 1 | Seal | Amazon eBay |
| 184-0025 | Gasket, Cylinder Head | 1 | Gasket | Amazon eBay |
| 184-0035 | Kit, Nozzle Holder (Includes Nozzle Holder and Gasket - Spec A-D) | 1 | Injector | eBay |
| 184-0036 | Gasket, Water Pump | 1 | Gasket | eBay |
| 184-0037 | Gasket | 1 | Gasket | eBay |
| 184-0039 | Gasket, Oil Pan | 1 | Gasket | Amazon eBay |
| 184-0051 | Kit, Gasket (Includes Parts Marked +) | 1 | Gasket | eBay |
| 185-2095 | O'Ring | 1 | Seal | Amazon eBay |
| 185-2238 | Gasket, Thermostat | 1 | Gasket | Amazon eBay |
| 185-2268 | Gasket, Thermostat | 2 | Gasket | eBay |
| 185-2284 | Gasket | 2 | Gasket | Amazon eBay |
| 185-2343 | Gasket | 1 | Gasket | eBay |
| 185-2410 | Gasket, Oil Gauge | 1 | Gasket | eBay |
| 185-5335 | Gasket, Inlet Manifold | 1 | Gasket | Amazon eBay |
| 185-5337 | Gasket | 2 | Gasket | Amazon eBay |
| 185-5339 | Gasket, Cylinder Head | 1 | Gasket | 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 | 2 | Glow plug | Amazon eBay $35.00 |
| 185-5422 | Pump Assy, Injection | 1 | Pump | Amazon eBay |
| 185-5433 | Pump Assy, Water | 1 | Pump | Amazon eBay $35.45 FridayParts $44.80 |
| 185-5434 | Gasket, Water Pump | 1 | Gasket | Amazon eBay FridayParts $12.06 |
| 185-5437 | Seal, Oil | 1 | Seal | Amazon eBay |
| 185-5438 | Gasket, Bearing Case | 1 | Gasket | Amazon eBay |
| 185-5458 | Thermostat | 1 | Thermostat | Amazon eBay |
| 185-5513 | Gasket, H/M Gearcase | 1 | Gasket | eBay |
| 185-5528 | Gasket, Cylinder Head Cover | 1 | Gasket | Amazon eBay |
| 185-5622 | Nozzle | 2 | Injector | Amazon eBay KuduParts $2035.00 FridayParts $2059.99 |
| 185-5641 | Gasket, Delivery Valve | 2 | Gasket | Amazon eBay |
| 185-5714 | Seal Assy, Mechanical | 1 | Seal | Amazon eBay |
| 185-5715 | Impeller, Water Pump | 1 | Impeller | Amazon eBay |
| 185-5720 | Gasket Water Flange | 1 | Gasket | eBay |
| 185-5985 | Seal, Heat | 3 | Seal | Amazon eBay |
| 185-6248 | O'Ring | 1 | Seal | eBay |
| 185-6580 | Gasket, Hole Cover | 1 | Gasket | Amazon eBay |
| 185-6851 | Gasket | 1 | Gasket | eBay |
| 185-6853 | Gasket | 1 | Gasket | eBay |
| 185-7080 | Gasket | 1 | Gasket | eBay |
| 185-7382 | Gasket, Gearcase | 1 | Gasket | Amazon eBay |
| 185-7383 | Gasket | 1 | Gasket | Amazon eBay |
| 185-7393 | Gasket, Water Flange | 1 | Gasket | Amazon eBay |
| 185-7421 | O'Ring | 1 | Seal | eBay |
| 185-7426 | O'Ring | 1 | Seal | Amazon eBay |
| 185-7444 | Filter, Oil | 1 | Oil filter | Amazon eBay $29.95 NAPA $9.09 KuduParts $11.00 FridayParts $13.23 |
| 191-2229 | Starter | 1 | Starter | Amazon eBay |
| 193-0244 | Sender, Oil Pressure (E1) | 1 | Sensor | Amazon eBay |
| 193-0388 | Sender, Water Temperature MC (Includes Nut and Washer) | 1 | Sensor | Amazon eBay |
| 193-0430-01 | Sender, Oil Pressure | 1 | Sensor | Amazon eBay $339.95 |
| 193-0491 | Sender, Water Temperature | 1 | Sensor | Amazon eBay |
| 212-1303 | Block, Brush (Includes Brushes and Springs) MC | 1 | Brush | eBay $71.24 |
| 305-1006 | Regulator, Battery Charger | 1 | Avr | eBay $175.00 |
| 309-0597-01 | Switch, High Exhaust Temperature (S5) | 1 | Sensor | eBay |
| 309-0717 | Switch, Pressure | 1 | Sensor | eBay $48.41 FridayParts $26.91 |
| 403-3860 | Seal, Fuel Pump | 1 | Seal | Amazon eBay |
| 405-7389 | Seal, Air Inlet | 1 | Seal | eBay |
| 502-1359 | Elbow, 90 Coolant Drain | 1 | Hose | Amazon eBay |
| 503-1353 | Hose, Exhaust (2" x 10') | 1 | Hose | eBay |
| 503-1692 | Hose (5/16 I.D. x 120" Lg.) | 1 | Hose | eBay |
| 503-2160 | Hose, Coolant | 1 | Hose | eBay |
| 503-2161 | Hose, Coolant | 1 | Hose | eBay |
| 503-2162 | Hose, Coolant | 1 | Hose | eBay |
| 503-2177 | Hose, Exhaust | 1 | Hose | eBay |
| 503-2189 | Hose, Coolant | 1 | Hose | eBay |
| 503-2192-01 | Hose, Intake | 1 | Hose | eBay |
| 503-2193 | Hose, Coolant | 1 | Hose | eBay |
| 503-2200-01 | Hose, Fuel | 1 | Hose | Amazon eBay |
| 503-2200-02 | Hose, Fuel (1/4” x 13.26) | 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 |
| 503-2206 | Hose, Intake | 1 | Hose | eBay |
| 503-2213 | Hose, Coolant | 2 | Hose | eBay |
| 503-2309 | Clamp, Hose | 16 | Hose | Amazon eBay |
| 503-2396 | Hose, Coolant | 1 | Hose | eBay |
| 503-2728-01 | Hose, Coolant | 1 | Hose | eBay |
| 503-2883-02 | Hose, Fuel (336.8mm) MC | 1 | Hose | eBay |
| 503-2883-03 | Hose, Fuel (849.9mm) MC | 1 | Hose | eBay |
| 503-2883-04 | Hose, Fuel (784mm) MC | 1 | Hose | eBay |
| 503-2883-10 | Hose, Fuel | 1 | Hose | eBay |
| 509-0351 | O'Ring | 1 | Seal | eBay |
| 509-0420 | O'Ring | 1 | Seal | eBay |
| 509-0549 | Gasket | 1 | Gasket | Amazon eBay |
| 511-0196 | Belt (6 Rib) | 1 | Belt | Amazon eBay |
| 511-0197 | V-Belt | 1 | Belt | Amazon eBay |
| A045Y557 | Plug, Glow (HR5) MC | 2 | Glow plug | eBay |
| A045Y560 | Kit, Nozzle Holder (Includes Nozzle Holder and Gasket - Spec E) | 1 | Injector | eBay |
| 100-3478-08 | Cruise Kit | 1 | Service part / kit | 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 |
| 123-2236 | Indicator, Oil | 1 | Service part / kit | eBay $29.99 |
| 130-3572 | Cap, Tank | 1 | Service part / kit | Amazon eBay |
| 130-3721 | Cap, Radiator | 1 | Service part / kit | Amazon eBay $32.76 |
| 149-2046 | Kit, Metal Bowl Replacement (Includes Plug, O-Rings and Drain Assy) | 1 | Service part / kit | Amazon eBay |
| 155-1002 | Strainer, Water Pickup | 1 | Service part / kit | Amazon eBay |
| 155-3218 | Separator, Water (2") | 1 | Service part / kit | 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 |
| 504-0206 | Valve, Ball | 1 | Service part / kit | eBay |
| 504-0223 | Valve, Check | 1 | Service part / kit | eBay |
| 509-0442 | Washer, Sealing (Spec A) | 1 | Service part / kit | Amazon eBay |
| 541-0876-02 | Kit, Siphon Break | 1 | Service part / kit | 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)
This page was generated from the 1 manufacturer document above by automated extraction; every figure shown is copied from one of them. How the data is compiled.