Service parts for the NHP
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredIgnition
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
Ratings spec sheet not in our library yet — see the documents below.
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | 140-1175 | 200 hr | Amazon eBay $25.00 | ||
| Fuel filter | 148-0739 | eBay | |||
| Oil filter | 122-0323 | 200 hr | Amazon eBay $41.99 NAPA $12.22 FridayParts $39.99 | ||
| Oil | SE oil, high temperature, low ash | 3.8 litre | — | 100 hr | |
| Spark plug | 0.025-inch gap | 167-0240 | 200 hr | Amazon eBay |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Service specifications
2| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Torque | Bearing plate adapter fasteners | 25-27 | Lbf-ft | same as rear bearing plate |
| Torque | Governor yoke screws | 30 | in/lb |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
What oil filter fits the Cummins/Onan NHP?
The Cummins/Onan NHP uses oil filter part number 122-0323.
What fuel filter does the Cummins/Onan NHP use?
The Cummins/Onan NHP uses fuel filter part number 148-0739.
Which air filter part number does the Cummins/Onan NHP take?
The Cummins/Onan NHP uses air filter part number 140-1175.
Parts
123model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 101-0415 | Gasket, Bearing Plate | 1 | Gasket | Amazon eBay |
| 103-0408 | Gasket, Gearcase | 1 | Gasket | Amazon eBay |
| 110-0068 | Gasket, Valve Guide (Intake) | 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 |
| 122-0321 | Gasket, Oil Filter Adapter | 1 | Gasket | Amazon eBay |
| 122-0323 | Filter, Oil | 1 | Oil filter | Amazon eBay $41.99 NAPA $12.22 FridayParts $39.99 |
| 122-0347 | Seal, Air - Oil Filter | 1 | Seal | Amazon eBay $18.00 |
| 140-1175 | Filter, Air Cleaner - Disposable | 1 | Air filter | Amazon eBay $25.00 |
| 140-1185 | Gasket, Air Cleaner | 1 | Gasket | eBay |
| 140-1298 | Hose, Air Inlet | 1 | Hose | eBay |
| 141-0281 | Gasket, Carburetor Mounting | 1 | Gasket | Amazon eBay |
| 142-0660 | Carburetor Assembly (See Separate Page for Components) (Includes Mounting Gasket) (Includes Parts Marked *) | 1 | Gasket | eBay |
| 142-0661 | Carburetor Assembly - Gasoline (See Separate page for Components) (Includes Mounting Gasket) (Includes Parts Marked +) | 1 | Gasket | eBay |
| 146-0456 | Carburetor, Gasoline (Includes Mounting Gaskets) | 1 | Gasket | Amazon eBay |
| 146-0466 | Fuel Pump Kit | Pump | eBay | |
| 147-0647 | Injection nozzle tip | Injector | buy | |
| 148-0739 | Filter, Gas (With Vacuum Lock-off) | 1 | Fuel filter | eBay |
| 149-0136 | Cover, Fuel P p Hole | 1 | Fluid | Amazon eBay |
| 149-1983 | Fuel Pump Cover Kit | Pump | eBay | |
| 160-1150 | Gasket, Breaker Box Mounting | 1 | Gasket | Amazon eBay |
| 167-0240 | Plug, Spark | 2 | Spark plug | Amazon eBay |
| 167-1462 | Cable, Spark Plug (16-3/4 in) | 1 | Spark plug | Amazon eBay |
| 167-1463 | Cable, Spark Plug (19 in) | 1 | Spark plug | Amazon eBay |
| 168-0121 | Kit, Gasket, Carbon Removal | 1 | Gasket | eBay |
| 168-0122 | Kit, Gasket, Complete Engine | 1 | Gasket | eBay $41.99 |
| 185-4412 | Gasket, old style fuel cock | 1 | Gasket | buy |
| 185-5325 | Gasket, new style fuel cock | 1 | Gasket | buy |
| 190-0020 | Gasket - Housing to Engine | 1 | Gasket | Amazon eBay eBay |
| 190-0021 | Gasket - Cover to Housing | 1 | Gasket | Amazon eBay |
| 191-0757 | Brush, Starter | 4 | Brush | eBay |
| 191-0758 | Spring (F-IO) for 191-0790 starter motor | Starter | buy | |
| 191-0885 | Stator, Alternator - 12 Volt, 15 Amp (Phelon) | 1 | Alternator | Amazon eBay |
| 191-0886 | Regulator, Voltage | 1 | Avr | eBay $350.00 FridayParts $50.09 |
| 191-0937 | Stator, Alternator (20 Amp Synchro) | 1 | Alternator | eBay |
| 191-0939 | Regulator, Voltage | 1 | Avr | eBay |
| 191-1005 | Brush, Positive | 2 | Brush | Amazon eBay |
| 191-1007 | Brush, Negative | 1 | Brush | eBay |
| 191-1008 | Brush (-) | 2 | Brush | Amazon eBay |
| 193-0108 | Sender, Oil Pressure Gauge | 1 | Sensor | Amazon eBay $119.99 |
| 309-0237 | Switch, Low Oil Pressure | 1 | Sensor | Amazon eBay |
| 501-0004 | Line, Fuel - 12" (Tank To Fuel Pump) | 1 | Hose | Amazon eBay |
| 501-0207 | Line, Fuel | 1 | Hose | eBay |
| 503-0085 | Hose, Fuel Inlet | 1 | Hose | eBay |
| 503-0479 | Hose, Flexible - Breather | 1 | Hose | Amazon eBay |
| 503-0688 | Hose, Regulator Balance | 1 | Hose | eBay |
| 503-0718 | Hose, Vacuum | 2 | Hose | eBay |
| 509-0008 | Seal, Oil | 1 | Seal | Amazon eBay NAPA $6.57 |
| 509-0016 | Seal, Oil | 1 | Seal | Amazon eBay |
| 509-0040 | Seal, Oil - Crankshaft | 1 | Seal | Amazon eBay $9.95 NAPA $18.65 |
| 509-0117 | Seal, "O" Ring - Breather Tube | 1 | Seal | Amazon eBay |
| 509-0142 | Gasket, Oil Fill Cap ("O" Ring) | 1 | Seal | Amazon eBay $19.99 |
| 509-0168 | Seal, Valve - Intake (Optional) | 2 | Seal | Amazon eBay |
| 541-0344 | SAE Type A hydraulic pump mounting adapter kit | Pump | buy | |
| 541-0374 | SAE Type B hydraulic pump mounting adapter kit | Pump | buy | |
| 110-3549 | Head, Cylinder | 2 | Service part / kit | Amazon eBay $53.90 |
| 112-0259 | Piston Ring Kit | Service part / kit | eBay | |
| 112-0264 | Piston/Ring Kit | 2 | Service part / kit | eBay $72.00 |
| 112-0265 | Piston (Includes Pin, Rings and Retaining Rings) Oversize Oversize Oversize Oversize | 2 | Service part / kit | Amazon eBay |
| 113-0202 | Piston ring kit, 3/32 inch wide ring groove | Service part / kit | buy | |
| 113-0203 | Piston ring set for T260G narrow 5/64 inch ring groove pistons | 2 | Service part / kit | Amazon eBay |
| 113-0296 | Kit, Ring - Piston | 2 | Service part / kit | Amazon eBay |
| 113-0310 | Piston ring set | Service part / kit | buy | |
| 113-0311 | Standard Oversize Oversize | 2 | Service part / kit | Amazon eBay |
| 114-0188 | Standard | 4 | Service part / kit | Amazon eBay $29.95 |
| 114-0203 | Rod, Connecting (Includes Bolt and Bushing) | 2 | Service part / kit | Amazon eBay |
| 114-0257 | Ring Set, Piston (Standard .010" .020" .030" Undersize) | 2 | Service part / kit | Amazon eBay |
| 114-0300 | Rod, Connecting (Standard) | 2 | Service part / kit | Amazon eBay |
| 123-0865 | 1 Baffle, Breather Tube- Spec A through S BASE, OIL | 1 | Service part / kit | Amazon eBay $23.69 |
| 123-0958 | Washer, Flat - Copper (1/4" Screw) | 2 | Service part / kit | Amazon eBay |
| 142-0662 | Carburetor DD15A | Service part / kit | buy | |
| 142-0663 | Carburetor DD16A | Service part / kit | buy | |
| 146-0464 | Carburetor conversion kit, Nikki | Service part / kit | eBay | |
| 146-0465 | Carburetor conversion kit, Nikki | Service part / kit | eBay | |
| 148-0737 | Regulator/Converter - LPG | 1 | Service part / kit | Amazon eBay |
| 148-0740 | Coil, Vaporizer | 1 | Service part / kit | eBay |
| 150-1257 | Spacer, Governor Fly Ball | 1 | Service part / kit | Amazon eBay |
| 150-1510 | Governor ball spacer, no longer available separately | Service part / kit | buy | |
| 150-2178 | Governor ball spacer, no longer available separately | Service part / kit | buy | |
| 150-2262 | Governor arm and shaft assembly kit | Service part / kit | buy | |
| 150-2460 | Governor Control Rod Kit | Service part / kit | eBay | |
| 154-2719 | Intake manifold | Service part / kit | eBay | |
| 154-2720 | Intake manifold, service replacement for non-Nikki carburetor engines | Service part / kit | buy | |
| 155-1247 | Muffler | 1 | Service part / kit | Amazon eBay |
| 155-1961 | Muffler kit for Travco installations | Service part / kit | buy | |
| 155-1962 | Muffler kit for GP installations | Service part / kit | buy | |
| 155-2068 | Exhaust muffler, 1-1/4 in O.D. outlet, 20 in overall length | Service part / kit | buy | |
| 155-2314 | Exhaust muffler, 1-3/4 in O.D. outlet | Service part / kit | buy | |
| 160-1151 | Plunger, Breaker Points | 1 | Service part / kit | Amazon eBay |
| 160-1183 | Point Set, Breaker | 1 | Service part / kit | Amazon eBay $29.95 |
| 160-1311 | Tune Up Kit (Includes Points and Condenser) | 1 | Service part / kit | Amazon eBay |
| 166-0535 | Coil, Ignition | 1 | Service part / kit | Amazon eBay $21.75 |
| 185-2416 | Governor spring, Blue, 50mm | Service part / kit | buy | |
| 185-2427 | Governor spring, Silver, 32.5mm | Service part / kit | buy | |
| 185-2440 | Governor spring, Silver, 50mm | Service part / kit | buy | |
| 185-2466 | Governor spring, Lt. Blue, 32.5mm | Service part / kit | buy | |
| 185-4406 | Cock, fuel, old style | 1 | Service part / kit | buy |
| 185-5323 | Cock, fuel, new style | 1 | Service part / kit | buy |
| 185-5324 | Cap, new style fuel cock | 1 | Service part / kit | buy |
| 191-0733 | Regulator, Voltage - 24 Volt (Model 8RF3016A) | 1 | Service part / kit | Amazon eBay |
| 191-0938 | Rectifier, Current | 1 | Service part / kit | eBay |
| 191-1635 | SRF3080F MO 1 511-0084 1 130-3176-02 1 191-1926-02 70044970S02 MO 1 BRG3032 MO 1 511-0 | Service part / kit | buy | |
| 195-2304 | Governor spring, Lt. Green, 50mm | Service part / kit | buy | |
| 300-1796 | Relay conversion kit for Spec EII and F MCCK models | Service part / kit | buy | |
| 300-1885 | Relay conversion kit for standard remote models with thermo-magnetic choke | Service part / kit | buy | |
| 300-2026 | Relay conversion kit for W models with Onan choke | Service part / kit | buy | |
| 300-2027 | Relay conversion kit for RV models with Sisson choke | Service part / kit | buy | |
| 300-2784-01 | Circuit board | Service part / kit | buy | |
| 300-2943-01 | Circuit board | Service part / kit | buy | |
| 300-3288 | Exerciser clock kit | Service part / kit | buy | |
| 300-3289 | Exerciser clock kit | Service part / kit | buy | |
| 300-3290 | Exerciser clock kit | Service part / kit | buy | |
| 300-3291 | Exerciser clock kit, 120V | Service part / kit | buy | |
| 300-3292 | Exerciser clock kit, 208/240V | Service part / kit | buy | |
| 300-3293 | Exerciser clock kit, 480V | Service part / kit | buy | |
| 300-3294 | Exerciser clock kit, 600V | Service part / kit | buy | |
| 312-0196 | Condenser (Breaker Box) | 1 | Service part / kit | Amazon eBay $16.96 NAPA $226.97 |
| 312-0244 | Condenser, Ignition | 2 | Service part / kit | eBay |
| 312-0256 | Condenser, Ignition - Remote | 1 | Service part / kit | Amazon eBay $34.95 |
| 321-0298 | Fuse | 1 | Service part / kit | Amazon eBay |
| 522-0278 | Kit, Engine Overhaul | 1 | Service part / kit | eBay |
| 541-0275 | Intake manifold kit | Service part / kit | eBay | |
| 541-0370 | Exhaust Flange Adapter Kit | Service part / kit | eBay |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Engine spec — 940-0750 Onan NHP NHPV spec C Industrial Engine Service manual 12-1987 (Cummins/Onan)Operator's manual — 940-0150 Onan NHP NHPV Engine Operator's Manual (7-1975) (Cummins/Onan)Parts manual — 924-0254 Onan NHP NHPV (spec C) Industrial Engine Parts manual (04-1984) (Onan)Service manual — 900-0450 Onan Service Parts Bulletins 01 to 71 (1992) (Cummins/Onan)
This page was generated from the 4 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.