Service parts for the 3.0DJA-2R
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
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 |
| Standby power | 3 kW |
| Oil capacity | 2.4 L |
| Voltage options | 240 V |
| Phase | Single |
Same engine, other brands
1 brandThe Cummins/Onan DJA in this set also powers 1 generator set sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.
| Brand | Models |
|---|---|
| Onan (Onan Division of Studebaker Corporation, Minneapolis, Minnesota) | Spec T |
Maintenance & consumables
for the Cummins/Onan DJA| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | 140B640 | 50 hr | Amazon eBay | ||
| Fuel filter | 149C408 | 500 hr | Amazon eBay | ||
| Oil filter | 122A185 | 200 hr | Amazon eBay $18.80 NAPA $12.88 | ||
| Battery | Battery | — | 100 hr | ||
| Belt | — | 500 hr | |||
| Coolant | — | 600 hr | |||
| Coolant filter | — | ||||
| Oil | 2.5 quarts | — | 500 hr | ||
| Spark plug | — | 500 hr |
Common questions
How many kW is the Cummins/Onan 3.0DJA-2R?
The Cummins/Onan 3.0DJA-2R is rated 3 kW standby.
What engine does the Cummins/Onan 3.0DJA-2R use?
The Cummins/Onan 3.0DJA-2R is powered by the Cummins/Onan DJA engine.
What kind of fuel does the Cummins/Onan 3.0DJA-2R run on?
The Cummins/Onan 3.0DJA-2R runs on Diesel.
How much oil does the Cummins/Onan 3.0DJA-2R take?
The Cummins/Onan DJA engine in the Cummins/Onan 3.0DJA-2R has an oil capacity of 2.4 liters.
What voltage does the Cummins/Onan 3.0DJA-2R produce?
The Cummins/Onan 3.0DJA-2R is offered in 240 V, Single-phase.
What oil filter fits the Cummins/Onan 3.0DJA-2R?
The Cummins/Onan 3.0DJA-2R uses oil filter part number 122A185.
What fuel filter fits the Cummins/Onan 3.0DJA-2R?
The Cummins/Onan 3.0DJA-2R uses fuel filter part number 149C408.
Which air filter part number does the Cummins/Onan 3.0DJA-2R take?
The Cummins/Onan 3.0DJA-2R uses air filter part number 140B640.
Parts
158| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 101-0386 | Gasket and Shim Kit, Rear Bearing Plate | 1 | Gasket | Amazon eBay |
| 102-0459 | Gasket, Base | 1 | Gasket | Amazon eBay |
| 110-0546 | Gasket, Glow Plug | 4 | Gasket | Amazon eBay $9.95 |
| 110-1267 | Gasket, Cylinder Head | 1 | Gasket | buy |
| 115-0160 | Gasket, Rocker Cover | 1 | Gasket | buy |
| 115-0166 | Tappet, Injection Pump | 1 | Fuel pump | buy |
| 120-0547 | Pump Assembly, Oil | 1 | Pump | Amazon eBay $295.00 |
| 120-0572 | Tube, Crankcase Oil | 1 | Hose | Amazon eBay |
| 120-0580 | Gasket Kit, Oil Pump | 1 | Gasket | Amazon eBay |
| 122-0182 | Adapter, Oil Filter | 1 | Oil filter | Amazon eBay |
| 122-0185 | Oil Filter | 1 | Oil filter | Amazon Amazon eBay $19.55 eBay NAPA $12.88 |
| 122-0188 | Gasket, Oil Adapter | 1 | Gasket | Amazon eBay |
| 122-0193 | Filter (5-1/2" Long) - Optional | 1 | Oil filter | Amazon eBay $18.32 NAPA $10.64 |
| 122-0325 | Filter, Fuel - Primary | 1 | Fuel filter | Amazon eBay $75.00 NAPA $35.18 |
| 122-0326 | Filter, Fuel - Secondary | 1 | Fuel filter | Amazon eBay $65.00 NAPA $37.59 |
| 123-0667 | 1 Gasket | 1 | Gasket | Amazon eBay |
| 123-0716 | Cap and Valve Assembly, Breather | 1 | Gasket | Amazon eBay |
| 123-0724 | Tube, Oil Fill | 1 | Hose | Amazon eBay |
| 140-0584 | Gasket, Air Cleaner | 1 | Gasket | Amazon eBay |
| 140-0636 | Element and Retainer, Air Cleaner | 1 | Air filter | Amazon eBay |
| 147-0043 | Nozzle Only (Component of Nozzle & Holder Assembly) | 1 | Gasket | Amazon eBay |
| 147-0133 | Line, Injection Pump to Nozzle | 1 | Hose | Amazon eBay |
| 147-0134 | +Nozzle - Includes Nozzle Gasket 50 | 4 | Injector | Amazon eBay $87.50 |
| 147-0136 | Nozzle & Holder Assembly | 1 | Injector | Amazon eBay |
| 147-0167 | Pump, Injection | 1 | Pump | Amazon eBay |
| 147-0172 | Line, Injection Pump to Nozzle | 1 | Hose | Amazon eBay |
| 147-0180 | Pump, Injection - Begin Spec B | 1 | Pump | buy |
| 147-0243 | Gasket, Nozzle | 4 | Gasket | Amazon eBay |
| 149-0408 | Filter, Secondary Fuel (Includes Cartridge) | 1 | Fuel filter | Amazon eBay |
| 149-0428 | Cartridge, Secondary Fuel Filter | 1 | Fuel filter | Amazon eBay NAPA $20.57 |
| 149-0455 | Gasket, Secondary Filter - Cartridge to Head | 1 | Gasket | Amazon eBay |
| 149-0456 | Gasket, Secondary Filter Bowl to Cover | 1 | Gasket | Amazon eBay |
| 149-0493 | Gasket, Secondary Filter - Cartridge to Retainer | 1 | Gasket | Amazon eBay |
| 149-0846 | Cartridge (For 149-1078 Filter) | 1 | Fuel filter | Amazon eBay $39.88 |
| 149-0852 | Pump, Fuel Transfer (Includes Mounting Gasket) | 1 | Pump | buy |
| 149-1185 | Adapter, Fuel Filter - Begin Spec S 22 | 1 | Fuel filter | Amazon eBay |
| 154-0463 | Gasket, Exhaust Manifold to Head | 1 | Gasket | Amazon eBay |
| 168-0085 | Gasket Kit DJA | 1 | Gasket | Amazon |
| 191-0434 | Brush Set, Service (starter, 12 Volt) | 1 | Brush | Amazon eBay |
| 305-0261 | Regulator, Voltage - 12 Volt 2 Step - Spec A thru S | 1 | Avr | Amazon eBay |
| 333-0106 | Plug, Glow - 12 Volt (includes gasket) | 4 | Glow plug | Amazon eBay |
| 333-0107 | Glow Plug (24 Volt) - includes gasket | 1 | Glow plug | Amazon eBay |
| 333-0112 | Glow Plug (32 Volt) - includes gasket | 1 | Glow plug | Amazon eBay $134.95 |
| 4208268 | Wrench, Oil Filter (For Purolator full flow filter) | Oil filter | Amazon eBay | |
| 420B250 | Oil Seal Guide and Driver | Seal | Amazon eBay | |
| 420P184 | Diesel Nozzle Tester | Injector | Amazon eBay | |
| 420P208 | Diesel Pintle, Nozzle Cleaning Tool Set (Includes injection nozzle centering tool) | Cleaning kit | Amazon eBay | |
| 509-0086 | Seal, Crankshaft Rear | 1 | Seal | Amazon eBay |
| 509-0088 | Seal, Governor Shaft | 1 | Seal | Amazon eBay |
| 509-0090 | Seal, Oil - Intake Valve | 2 | Seal | Amazon eBay |
| 509-0132 | Seal, Oil - Intake Valve | 2 | Seal | Amazon eBay |
| 967-512 | Connecting Rod Bolt | 4 | Bolt | Amazon eBay |
| 967-513 | Cylinder Head Bolt | 8 | Bolt | Amazon eBay |
| 967-514 | Exhaust Manifold Nut | 2 | Nut | Amazon eBay |
| 967-515 | Flywheel Mounting Screw | 1 | Bolt | Amazon eBay |
| 967-516 | Fuel Pump Mounting Screw | 2 | Bolt | Amazon eBay |
| 967-517 | Gear Case Cover Bolt | 1 | Bolt | Amazon eBay |
| 967-518 | Glow Plug | 2 | Glow plug | Amazon eBay |
| 967-519 | Injection Nozzle Mounting Screw | 4 | Bolt | Amazon eBay |
| 967-520 | Injection Pump Mounting Screw | 4 | Bolt | Amazon eBay |
| 967-521 | Intake Manifold Bolt | 2 | Bolt | Amazon eBay |
| 967-522 | Oil Base Mounting Screw | 4 | Bolt | Amazon eBay |
| 967-523 | Rear Bearing Plate Bolt | 1 | Bolt | Amazon eBay |
| 967-524 | Rocker Arm Nut | 8 | Nut | Amazon eBay |
| P0005255 | Fuel level gauge | Fuel filter | Amazon eBay | |
| P01-025 | Air filter mat | 1 | Air filter | Amazon eBay |
| P01-034 | Spring, By-Pass Valve | 1 | Belt | Amazon eBay |
| P01-056 | Plunger Diaphragm, Centrifugal Switch | 2 | Pump | Amazon eBay |
| P01-078 | Spacer, Centrifugal Switch | 1 | Pump | Amazon eBay |
| P01-123 | Cam and Weight Assembly, Centrifugal Switch | 1 | Pump | Amazon eBay |
| P01-156 | Breaker Points, Governor System | 1 | Breaker points | Amazon eBay |
| 0229019 | LE-90€ SN'MS | 42078 TVNINHL@ | Service part / kit | Amazon eBay | |
| 101-0337 | Plate, Bearing (Less Bearing and Pin) | 1 | Service part / kit | Amazon eBay |
| 101-0359 | Bearing, Main (Precision) - Front or Rear - Standard | 2 | Service part / kit | Amazon eBay |
| 101-0363 | 1 "Bearing, Precision Cam Front (Standard Only) 8 | 1 | Service part / kit | Amazon eBay NAPA $41.82 |
| 101-0365 | 1 "Bearing, Precision Cam Rear (Standard Only) 8A | 1 | Service part / kit | Amazon eBay |
| 102-0488 | Base, Oil | 1 | Service part / kit | Amazon eBay |
| 102206606 | Safety Messages | Service part / kit | Amazon eBay | |
| 104-0170 | Screw | 1 | Service part / kit | Amazon eBay |
| 104-0416 | Flywheel | 1 | Service part / kit | Amazon eBay |
| 104-0418 | Gear | 1 | Service part / kit | Amazon eBay |
| 104-0420 | 2 "Washer, Crankshaft Thrust | 2 | Service part / kit | Amazon eBay |
| 104-1288 | Crankshaft Kit | 1 | Service part / kit | Amazon eBay |
| 105-0248 | Camshaft - Spec A through Q | 1 | Service part / kit | Amazon eBay |
| 105-0299 | Camshaft - Begin Spec R | 1 | Service part / kit | Amazon eBay |
| 110-0814 | Screw, Cylinder Head (3/8-16 X 4-1/4") | 4 | Service part / kit | Amazon eBay |
| 110-1221 | Spring, Valve | 8 | Service part / kit | Amazon eBay |
| 110-1268 | Insert, Valve Seat - Standard | 8 | Service part / kit | Amazon eBay |
| 110-1278 | Valve, Exhaust | 4 | Service part / kit | Amazon eBay NAPA $93.84 |
| 110-1320 | Valve, Intake | 1 | Service part / kit | Amazon eBay $49.99 NAPA $215.34 |
| 110-1335 | Block Assembly, Cylinder (Includes Parts Marked Plus Tappets) | 1 | Service part / kit | Amazon eBay FridayParts $220.35 |
| 110-1501 | Guide, Valve | 8 | Service part / kit | Amazon eBay |
| 110-1871 | Valve, Intake - Late Style | 1 | Service part / kit | Amazon eBay |
| 110-2963 | Head, Cylinder With Valves | 1 | Service part / kit | Amazon eBay |
| 112-0109 | Piston & Pin, Includes Pin Retaining Rings - Standard - Begin Spec R | 1 | Service part / kit | Amazon eBay |
| 112-0173 | Piston & Pin, Includes Pin Retaining Rings - Standard - Spec A through Q | 1 | Service part / kit | Amazon eBay |
| 113-0130 | Ring Set, Piston - Standard | 1 | Service part / kit | Amazon eBay |
| 114-0164 | BEARING HALF, CONNECTING ROD | 2 | Service part / kit | Amazon eBay |
| 114-0168 | Rod Assembly, Connecting | 4 | Service part / kit | Amazon eBay |
| 114-0170 | Bushing, Piston Pin - Connecting Rod | 2 | Service part / kit | Amazon eBay |
| 120-0539 | Valve, Oil By-Pass | 1 | Service part / kit | Amazon eBay $17.50 |
| 120-0551 | 1 Spec A through G | 1 | Service part / kit | Amazon eBay |
| 120-0555 | Bracket, Oil Pump Intake Cup | 1 | Service part / kit | Amazon eBay |
| 123-0315 | Valve, Breather (Specs A Through Q) | 1 | Service part / kit | Amazon eBay |
| 123-0458 | 1 Spec A through H | 1 | Service part / kit | Amazon eBay |
| 123-0645 | 1 "Tube, Breather - Spec A through S 21 | 1 | Service part / kit | Amazon eBay NAPA $14.53 |
| 123-0952 | Tube, Breather - Begin Spec R | 1 | Service part / kit | Amazon eBay |
| 123-1203 | 1 Cap and Yaive Assembly | 1 | Service part / kit | Amazon eBay |
| 150-0821 | Constant speed governor | 1 | Service part / kit | Amazon eBay |
| 150-1084 | Spring, Governor - Begin Spec R | 1 | Service part / kit | Amazon eBay $38.95 |
| 154-0712 | Heater, Manifold | 1 | Service part / kit | Amazon eBay |
| 155-0824 | Muffler, Exhaust (10-3/8" Lg.) | 1 | Service part / kit | Amazon eBay |
| 191-0324 | Motor, Starting - 12 Volt - Prestolite MEO-6003 | 1 | Service part / kit | Amazon eBay |
| 191-0400 | Rotor (1/4-20 x 7/8") | 1 | Service part / kit | Amazon eBay |
| 191-0432 | 1OI-O432-1O 101-C432-20 (p-%’ UsEl) | 1 | Service part / kit | Amazon eBay |
| 191-0509 | Stator - Spec A thru S | 1 | Service part / kit | Amazon eBay |
| 191-0712 | Armature | 1 | Service part / kit | buy |
| 191-0877 | Stator Assembly - Begin Spec T | 1 | Service part / kit | buy |
| 191-1026 | Connector Package (Starter) | 1 | Service part / kit | buy |
| 193-0006 | Gauge, Oil Pressure | 1 | Service part / kit | Amazon eBay $94.95 |
| 2220019 | LE-@OE BN ‘MS | AN3WuND | Service part / kit | Amazon eBay FridayParts $7.90 | |
| 2229019 | Le-@0€ sn “mg 2OHVHD 01-18 | Service part / kit | Amazon eBay | |
| 305-0267 | Rectifier Assembly (Includes Mounting Brackets) - Spec A thru S | 1 | Service part / kit | Amazon eBay |
| 305-0478 | Regulator, Rectifier - Begin Spec T | 1 | Service part / kit | Amazon eBay |
| 306-0166 | Spring, Solenoid Plunger | 1 | Service part / kit | Amazon eBay |
| 306-0167 | Plunger, Solenoid (Includes Pin) | 1 | Service part / kit | Amazon eBay |
| 307-0628 | Solenoid, Decompression Release - Specs A Through S | 1 | Service part / kit | Amazon eBay FridayParts $94.00 |
| 307-1098 | Solenoid, Decompression Release - Begin Spec T | 1 | Service part / kit | buy |
| 321-0103 | Holder, Fuse (Includes 20 Amp Fuse) - Spec A thru S | 1 | Service part / kit | Amazon eBay |
| 321-0128 | Fuse, 20 Amp - Spec A thru S | 1 | Service part / kit | Amazon eBay |
| 321-0165 | Fuse, 30 Amp - Begin Spec T | 1 | Service part / kit | Amazon eBay |
| 402-0036 | 4 Mount, Upper Vibration (Cylindrical Shaped) - Spec A through H | 1 | Service part / kit | Amazon eBay |
| 402-0038 | 2 Engine End | 1 | Service part / kit | Amazon eBay |
| 402-0046 | 4 Spec A through H . 402- 0290 ' 4 | 4 | Service part / kit | Amazon eBay |
| 420248 | Crankshaft Gear Pulling Ring | Service part / kit | Amazon eBay | |
| 4204252 | Driver, Front Camshaft Bearing | Service part / kit | Amazon eBay | |
| 4208250 | Driver, Rear Camshaft Bearing | Service part / kit | Amazon eBay | |
| 4208264 | Driver, Rear Camshaft Bearing (JA) | Service part / kit | Amazon eBay | |
| 4208269 | Driver, Main Bearing Front and Rear | Service part / kit | Amazon eBay | |
| 4208270 | Driver, Valve Seat | Service part / kit | Amazon eBay | |
| 4208272 | Valve Seat Remover | Service part / kit | Amazon eBay | |
| 4208274 | Replacement Blades for 420B272 | Service part / kit | Amazon eBay | |
| 505-0002 | Nipple (1-1/2" x 3") | 1 | Service part / kit | Amazon eBay |
| 505-0014 | Coupling (1/2") | 1 | Service part / kit | Amazon eBay |
| 505-0056 | 1 Plug (1/2") | 1 | Service part / kit | Amazon eBay |
| 516-0072 | Pin, Drive - Bearing Stop | 4 | Service part / kit | Amazon eBay |
| 516-0141 | 2 "Pin, Gear Cover Locating | 1 | Service part / kit | Amazon eBay |
| 517-0053 | Plug, Camshaft Opening | 1 | Service part / kit | Amazon eBay |
| 522-0200 | Overhaul Kit, Engine - Spec A Through R | 1 | Service part / kit | buy |
| 522-0249 | Overhaul Kit, Engine - Begin Spec S | 1 | Service part / kit | buy |
| 525P137 | Onan Green, Spray can | 1 | Service part / kit | Amazon eBay |
| 525P216 | Onan White, spray can | Service part / kit | Amazon eBay | |
| 805-0019 | 6 "Bolt (3/8-16 x 1-1/4") - Rear Bearing Plate | 6 | Service part / kit | Amazon eBay |
| 967-511 | Place Bolts (Fig. 1) | 1 | Service part / kit | Amazon eBay |
| 967-525 | Throttle Lever | 1 | Service part / kit | Amazon eBay |
| IS9SO29 | BUASSRAd WO - HILING SOWSOS vs | Service part / kit | Amazon eBay | |
| P0001006 | EVC menu display | Service part / kit | Amazon eBay | |
| P0001315 | Fault handling display | 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 — 967-0224 Onan DJA (spec A-V) Genset Parts manual (07-1989) (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.