Service parts for the 3.0MDJA
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
| Standby power | 3 kW |
|---|
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Filter, Breather Tube | 123-0954 | Amazon eBay | ||
| Fuel filter | Screen, Fuel Transfer Pump | 149-0408 | Amazon eBay | ||
| Oil filter | Cup, Oil Pump Intake Filter | 120-0551 | Amazon eBay |
Common questions
What is the power rating of the Cummins/Onan 3.0MDJA?
The Cummins/Onan 3.0MDJA is rated 3 kW standby.
What oil filter does the Cummins/Onan 3.0MDJA use?
The Cummins/Onan 3.0MDJA uses oil filter part number 120-0551.
What fuel filter does the Cummins/Onan 3.0MDJA use?
The Cummins/Onan 3.0MDJA uses fuel filter part number 149-0408.
What air filter does the Cummins/Onan 3.0MDJA use?
The Cummins/Onan 3.0MDJA uses air filter part number 123-0954.
Parts
250| 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 |
| 110-0419 | Gasket, Shield to Head (Copper) 54 ELBOW | 1 | Gasket | Amazon eBay |
| 115-0165 | Tappet, Injection Pump | 1 | Fuel pump | Amazon eBay |
| 119-0086 | Seal, Crankshaft - Rear | 1 | Seal | Amazon eBay |
| 120-0533 | Oil Pump Mounting (5/16) | 1 | Pump | Amazon eBay |
| 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 |
| 120-0622 | Line, Adapter to Cylinder Head | 1 | Hose | Amazon eBay |
| 122-0182 | 1 Adapter, Oil Filter 7 | 1 | Oil filter | Amazon eBay |
| 122-0185 | Oil Filter | 1 | Oil filter | Amazon $8.99 Amazon eBay $19.55 eBay |
| 122-0188 | Gasket, Filter Adapter | 1 | Gasket | Amazon eBay |
| 123-0191 | Gasket, Oil Fill Cap | 1 | Gasket | Amazon eBay |
| 123-0567 | Gasket, Cap | 1 | Gasket | Amazon eBay |
| 123-0716 | Cap and Valve Assembly, Breather | 1 | Gasket | Amazon eBay |
| 123-0724 | Tube, Oil Fill | 1 | Hose | Amazon eBay |
| 123-0769 | Hose, Breather | 1 | Hose | Amazon eBay |
| 123-0865 | 1 Baffle, Breather Tube- Spec A through S BASE, OIL | 1 | Air filter | Amazon eBay $23.69 |
| 123-1201 | Retainer, Breather screen | 1 | Air filter | Amazon eBay |
| 123-1202 | Screen, Breather | 1 | Air filter | Amazon eBay |
| 129-0515 | Oil Filter Adapter Mounting (5/16") | 1 | Oil filter | Amazon eBay |
| 131-0142 | Plate, Water Pump Drive Shaft Bearing | 1 | Pump | Amazon eBay |
| 132-0009 | Body, Pump | 1 | Pump | Amazon eBay |
| 132-0037 | Pump, Water | 1 | Pump | Amazon eBay |
| 132-0059 | Kit, Water Pump Service | 1 | Pump | Amazon eBay |
| 132-0060 | Shaft, Water Pump | 1 | Pump | Amazon eBay |
| 132-0063 | Cover, Water Pump | 1 | Pump | Amazon eBay |
| 132-0064 | Impeller | 1 | Impeller | Amazon eBay $40.00 |
| 132-0091 | Impeller | 1 | Impeller | Amazon eBay |
| 132-0092 | Cover, Water Pump | 1 | Pump | Amazon eBay |
| 132-0110 | Fresh Water Pump - With Metal Impeller | 1 | Pump | Amazon eBay |
| 132-0112 | Gasket, Cover (captive water pump) | 1 | Gasket | Amazon eBay |
| 132-0114 | Impeller | 1 | Impeller | Amazon eBay |
| 132-0138 | Seal Assembly | 1 | Seal | Amazon eBay |
| 132-0152 | Body “Impeller (includes SplineSeal) | 1 | Pump | Amazon eBay |
| 140-0504 | Adapter, Air Cleaner | 1 | Air filter | Amazon eBay |
| 140-0516 | Adapter, Air Cleaner | 1 | Air filter | Amazon eBay |
| 140-0517 | Adapter, Air Cleaner | 1 | Air filter | Amazon eBay |
| 140-0584 | Gasket, Air Cleaner | 1 | Gasket | Amazon eBay |
| 140-0594 | Gasket, Air Cleaner | 1 | Air filter | Amazon eBay |
| 140-0606 | Gasket, Air Cleaner | 1 | Gasket | Amazon eBay |
| 140-0607 | Element, Air Cleaner - Foam Type | 1 | Air filter | Amazon eBay |
| 140-0706 | Gasket, Manifold Heater - Insulated | 1 | Gasket | Amazon eBay |
| 140-1704 | Gasket, Manifold Heater - Insulated | 1 | Gasket | Amazon eBay |
| 147-0043 | Nozzle Only (Component of Nozzle & Holder Assembly) | 1 | Injector | Amazon eBay |
| 147-0044 | Shield, Nozzle Heat (Steel) | 8 | Injector | Amazon eBay |
| 147-0134 | +Nozzle - Includes Nozzle Gasket 50 | 4 | Injector | Amazon eBay |
| 147-0136 | Nozzle & Holder Assembly | 1 | Injector | Amazon eBay |
| 147-0141 | Flange, Injection Nozzle Hold-down | 1 | Injector | Amazon eBay |
| 147-0167 | Pump, Injection | 1 | Pump | Amazon eBay |
| 147-0172 | Line, Injection Pump to Nozzle | 1 | Hose | Amazon eBay |
| 149-0408 | Filter, Secondary Fuel (Includes Cartridge) | 1 | Fuel filter | Amazon eBay |
| 149-0428 | Fuel Filter Element | 1 | Fuel filter | Amazon eBay |
| 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 |
| 149-0517 | Gasket, Fuel Pump Bowl | 1 | Gasket | Amazon eBay |
| 149-0792 | Gasket, Fuel Pump Mounting | 1 | Gasket | Amazon eBay |
| 149-0947 | Washer, Flange - Pump Mounting | 1 | Pump | Amazon eBay |
| 149-0958 | Gasket, Pump Mounting | 1 | Gasket | Amazon eBay |
| 149-1042 | Repair Kit, Fuel Pump | 1 | Pump | Amazon eBay |
| 149-1307 | Elbow (45°), Inverted Male, Nozzle | 2 | Injector | Amazon eBay |
| 149-1339 | Pump, Fuel Transfer (Includes Mounting Gasket) | 1 | Pump | Amazon eBay |
| 149-1964 | Bowl, Fuel Pump - Replacement Kit for sets with long (2-3/8") fuel pump bowl | 1 | Fuel pump | Amazon eBay |
| 150-0821 | Constant speed governor | 1 | Governor | Amazon eBay |
| 154-0894 | Tube Assembly, Water Injection - Early Models 56 | 1 | Hose | Amazon eBay |
| 154-1057 | Gasket, Exhaust Manifold | 2 | Gasket | Amazon eBay |
| 160-0721 | Gasket, Backplate Opening Cover | 1 | Gasket | Amazon eBay |
| 191-0331 | Gear & Shaft Assembly, Water Pump Drive | 1 | Pump | Amazon eBay |
| 191-0552 | Gear & Shaft Assembly, Water Pump Drive | 1 | Pump | Amazon eBay |
| 241-0281 | Gasket, Air Cleaner Adapter to Engine | 1 | Gasket | Amazon eBay |
| 305-0019 | Gasket Kit #168-0091 | 6 | Gasket | Amazon eBay |
| 307-0736 | Gasket, Solenoid Mounting | 1 | Gasket | Amazon eBay |
| 309-0130 | Thermostat | 1 | Thermostat | Amazon eBay |
| 309-0144 | Cover, Thermostat Outlet | 1 | Thermostat | Amazon eBay FridayParts $374.61 |
| 309-0145 | Gasket, Thermostat Cover / Thermostat Chamber | 2 | Gasket | Amazon eBay |
| 309-0154 | Cover, Switch - Used on Early Models COVER, THERMOSTAT | 1 | Thermostat | Amazon eBay |
| 309-0156 | High Temperature Cutoff Switch | 1 | Switch | Amazon eBay |
| 309-0161 | Cover, Thermostat Outlet | 1 | Thermostat | Amazon eBay |
| 309-0420 | Switch, Cut-Off - High Exhaust Temperature | 1 | Sensor | Amazon eBay |
| 336-1313 | Lead, Glow Plug to Air Heater - Round Type Terminal | 1 | Glow plug | Amazon eBay |
| 336-1505 | Lead, Glow Plug to Air Heater - Blade Type Terminal | 1 | Glow plug | Amazon eBay |
| 501-0032 | Line, Pump to Secondary Filter | 1 | Hose | Amazon eBay |
| 501-0103 | Line, Fuel Secondary Filter to Injection Pump | 1 | Hose | Amazon eBay |
| 501-0242 | Elbow, Injection Pump Inlet | 1 | Fuel pump | Amazon eBay |
| 502-0002 | Elpow, Street - Fuel Pump 2 | 1 | Fuel pump | Amazon eBay |
| 502-0103 | Gasket, Exhaust Manifold to Head | 1 | Gasket | Amazon eBay |
| 502-0237 | Elbow, Brass - Water Hose Adapter | 2 | Hose | Amazon eBay |
| 503-0365 | Clamp, Hose | 4 | Hose | Amazon eBay |
| 503-0446 | Clamp, Hose | 4 | Clamp | Amazon eBay |
| 503-0465 | Clamp, Hose | 4 | Hose | Amazon eBay $23.99 |
| 503-0479 | Hose, Breather 1 | 1 | Hose | Amazon eBay |
| 503-0560 | Hose, Breather | 1 | Hose | Amazon eBay |
| 503-0575 | Elbow, Exhaust Hose | 1 | Hose | Amazon eBay |
| 503-0586 | Hose, Intake - Sea Water Pump 53 | 1 | Hose | Amazon eBay |
| 505-0180 | Plug, Pipe (1-1/4"), Air Cleaner Adapter and Intake Manifold | 1 | Air filter | Amazon eBay |
| 509-0018 | Ring, "O" - Spark Plug Cables | 2 | Seal | Amazon eBay |
| 509-0101 | Seal, O Ring - Injection Pump to Crankcase | 1 | Seal | Amazon eBay |
| 509-0117 | Seal, "O" Ring - Breather | 1 | Seal | Amazon eBay |
| 520-0143 | Switch, High Temperature Cut-off | 1 | Sensor | Amazon eBay |
| 520-0621 | Stud, Air Cleaner | 2 | Air filter | Amazon eBay |
| 870-0170 | Nut, Knurled Brass, Air Cleaner | 2 | Air filter | Amazon eBay |
| 101-0337 | Plate, Bearing (Less Bearing and Pin) | 1 | Service part / kit | Amazon eBay |
| 101-0359 | Bearing, Main - Front and Rear - Standard | 2 | Service part / kit | Amazon eBay |
| 101-0359-02 | Bearing, Precision Crankshaft - .002 Undersize | 2 | Service part / kit | Amazon eBay |
| 101-0359-10 | Bearing, Precision Crankshaft - .010 Undersize | 2 | Service part / kit | Amazon eBay |
| 101-0359-20 | Bearing, Precision Crankshaft - .020 Undersize | 2 | Service part / kit | Amazon eBay $10.44 |
| 101-0359-30 | Bearing, Precision Crankshaft - .030 Undersize | 2 | Service part / kit | Amazon eBay |
| 101-0363 | 1 "Bearing, Precision Cam Front (Standard Only) 8 | 1 | Service part / kit | Amazon eBay |
| 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 |
| 102-0541 | Base, Oil | 1 | Service part / kit | Amazon eBay |
| 104-0091 | Washer, Flat (Special) | 20 | Service part / kit | Amazon eBay |
| 104-0416 | Flywheel | 1 | Service part / kit | Amazon eBay |
| 104-0420 | 2 "Washer, Crankshaft Thrust | 2 | Service part / kit | Amazon eBay |
| 104-0447 | Flywheel | 1 | Service part / kit | Amazon eBay |
| 104-0467 | Guard, Flywheel | 1 | Service part / kit | Amazon eBay |
| 104-0564 | Cover, Flywheel Guard | 1 | Service part / kit | Amazon eBay |
| 104-0594 | Cover, Flywheel Guard | 1 | Service part / kit | Amazon eBay |
| 104-1288 | Crankshaft Kit | 1 | Service part / kit | Amazon eBay |
| 105-0205 | 1 Washer, Thrust Gear 5 | 1 | Service part / kit | Amazon eBay |
| 105-0218 | 1 Begin Spec B 12 | 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 |
| 105-0465 | Gear Assembly, Camshaft | 1 | Service part / kit | Amazon eBay |
| 110-0445 | Nut, Hex | 4 | Service part / kit | Amazon eBay |
| 110-1357 | Block Assembly, Cylinder | 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 |
| 112-0173-10 | Piston and Pin - .010 Oversize | 1 | Service part / kit | Amazon eBay |
| 112-0173-20 | Piston and Pin - .020 Oversize | 1 | Service part / kit | Amazon eBay |
| 112-0173-30 | Piston and Pin - .030 Oversize | 1 | Service part / kit | Amazon eBay |
| 112-0173-40 | Piston and Pin - .040 Oversize | 1 | Service part / kit | Amazon eBay |
| 112-0175 | Piston & pin (standard) | 1 | Service part / kit | Amazon eBay |
| 112-0175-05 | Piston and Pin - .005 Oversize | 1 | Service part / kit | Amazon eBay |
| 112-0175-10 | Piston & pin - .010 oversize | 1 | Service part / kit | Amazon eBay $82.50 |
| 112-0175-20 | Piston & pin - .020 oversize | 1 | Service part / kit | Amazon eBay |
| 113-0130-05 | Piston - .005 Oversize | 1 | Service part / kit | Amazon eBay |
| 113-0130-10 | Piston - .010 Oversize | 1 | Service part / kit | Amazon eBay |
| 113-0130-20 | Piston - .020 Oversize | 1 | Service part / kit | Amazon eBay |
| 113-0130-30 | Piston - .030 Oversize | 1 | Service part / kit | Amazon eBay |
| 113-0130-40 | Piston - .040 Oversize | 1 | Service part / kit | Amazon eBay |
| 113-0138 | Piston - Standard | 1 | Service part / kit | Amazon eBay |
| 114-0023 | Screw, Cap - Manifold Heater Mounting (Special) | 1 | Service part / kit | Amazon eBay |
| 114-0164 | Wearing Half - Connecting Rod - Standard | 2 | Service part / kit | Amazon eBay |
| 114-0164-02 | Wearing Half - Connecting Rod - .002 Undersize | 2 | Service part / kit | Amazon eBay |
| 114-0164-10 | Wearing Half - Connecting Rod - .010 Undersize | 2 | Service part / kit | Amazon eBay |
| 114-0164-20 | Wearing Half - Connecting Rod - .020 Undersize | 2 | Service part / kit | Amazon eBay |
| 114-0164-30 | Wearing Half - Connecting Rod - .030 Undersize | 2 | Service part / kit | Amazon eBay |
| 114-0170 | Bushing, Piston Pin - Connecting Rod | 2 | Service part / kit | Amazon eBay |
| 115-0132 | 8 Spec A through N | 2 | Service part / kit | Amazon eBay |
| 115-0195 | 8 Begin Spec P 19 | 2 | Service part / kit | Amazon eBay |
| 120-0551 | 1 Spec A through G | 1 | Service part / kit | Amazon eBay |
| 120-0562 | 1 Gasoline Sets - Spec A through N | 1 | Service part / kit | Amazon eBay |
| 120-0598 | Screw, Cap - Hex Head | 1 | Service part / kit | Amazon eBay |
| 122-0101 | Seat | 1 | Service part / kit | Amazon eBay |
| 123-0051 | Clamp, Breather | 1 | Service part / kit | Amazon eBay |
| 123-0954 | Cap and Valve, Breather | 1 | Service part / kit | Amazon eBay |
| 123-1084 | Cap and Indicator | 1 | Service part / kit | Amazon eBay |
| 123-1153 | Cup & Holder, Baffle | 1 | Service part / kit | Amazon eBay |
| 123-1283 | Filter, Breather Tube | 1 | Service part / kit | Amazon eBay |
| 132-0061 | Plate Assembly, Cam & Wear | 1 | Service part / kit | Amazon eBay |
| 132-0062 | Screw, Cap - Hex Head | 1 | Service part / kit | Amazon eBay |
| 132-0065 | Seat | 1 | Service part / kit | Amazon eBay |
| 132-0066 | Ring, Wear | 1 | Service part / kit | Amazon eBay |
| 132-0068 | Plug, Pipe - See Over | 1 | Service part / kit | Amazon eBay |
| 132-0132 | Nut, Hex | 1 | Service part / kit | Amazon eBay |
| 132-0136 | Washer, Lock - Spring | 1 | Service part / kit | Amazon eBay |
| 132-0139 | Plug, Pipe | 1 | Service part / kit | Amazon eBay |
| 132-0140 | Screw, Cap - Hex Head | 1 | Service part / kit | Amazon eBay |
| 132-0141 | Ring, Wear | 1 | Service part / kit | Amazon eBay |
| 132-0142 | Ring, Mounting & Shaft Assembly | 1 | Service part / kit | Amazon eBay |
| 140-0602 | Washer, Rubber | 2 | Service part / kit | Amazon eBay |
| 140-0705 | Plate, Manifold Heater Mounting | 1 | Service part / kit | Amazon eBay |
| 140-1703 | Plate, Manifold Heater Mounting | 1 | Service part / kit | Amazon eBay |
| 149-0191 | Elbow, Secondary Filter to Line | 1 | Service part / kit | Amazon eBay |
| 149-0463 | Valve, Check | 1 | Service part / kit | Amazon eBay |
| 150-0075 | Pin, Camshaft Center | 1 | Service part / kit | Amazon eBay |
| 150-0078 | Ring, Camshaft Center Pin | 1 | Service part / kit | Amazon eBay |
| 150-0773 | 1 Plate, Governor Flyball 6 FLYBALL, GOVERNOR | 1 | Service part / kit | Amazon eBay |
| 150-0775 | Cup, Governor | 1 | Service part / kit | Amazon eBay |
| 150-0810 | Bracket Assembly | 1 | Service part / kit | Amazon eBay |
| 150-0822 | Stud, Adjusting - Spec A through Q | 1 | Service part / kit | Amazon eBay FridayParts $299.89 |
| 150-0823 | Cover, Governor Bracket | 1 | Service part / kit | Amazon eBay |
| 150-0883 | Link, Governor | 1 | Service part / kit | Amazon eBay |
| 150-0939 | Joint, Ball | 2 | Service part / kit | Amazon eBay |
| 150-0974 | Joint, Ball | 1 | Service part / kit | Amazon eBay |
| 150-1082 | Stud, Adjusting - Begin Spec R | 1 | Service part / kit | Amazon eBay |
| 150-1084 | Spring - Begin Spec R | 1 | Service part / kit | Amazon eBay |
| 150-1103 | Bracket Assembly | 1 | Service part / kit | Amazon eBay |
| 150-1201 | Link, Governor | 1 | Service part / kit | Amazon eBay |
| 154-0712 | Heater, Manifold | 1 | Service part / kit | Amazon eBay |
| 154-0725 | Manifold, Exhaust | 1 | Service part / kit | Amazon eBay |
| 154-0971 | Manifold, Exhaust | 2 | Service part / kit | Amazon eBay |
| 154-1665 | Tab, Lock - Exhaust Manifold | 1 | Service part / kit | Amazon eBay |
| 155-1058 | Tee, Reducing - Exhaust | 1 | Service part / kit | Amazon eBay |
| 160-0323 | Plunger, Solenoid (Keys 1,2,4) | 1 | Service part / kit | Amazon eBay |
| 160-0379 | Diaphragm, Breaker Plunger (Key 3) | 1 | Service part / kit | Amazon eBay FridayParts $356.14 |
| 160-0382 | Diaphragm, Breaker Plunger (Keys 1,2,4) | 1 | Service part / kit | Amazon eBay $9.95 |
| 160-0720 | 160-0720 160-0721 160-07~’v | 1 | Service part / kit | Amazon eBay |
| 160-0774 | 1 Plunger, Thrust : 8540014 2 Gail Mounting | 1 | Service part / kit | Amazon eBay |
| 166-0313 | Solenoid, Compression Release | 1 | Service part / kit | Amazon eBay |
| 193-0006 | 1 Gauge, Oil Pressure 8 | 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 |
| 309-0134 | Washer, Lock | 1 | Service part / kit | Amazon eBay |
| 309-0421 | Kit, High Temperature Switch | 1 | Service part / kit | Amazon eBay |
| 332-0794 | Tie, Cable | 1 | Service part / kit | Amazon eBay |
| 336-7418 | Lead, Air Heater to Solenoid in Control | 1 | Service part / kit | Amazon eBay |
| 337-0051 | Key 5, 7 (3" Long) Standard Equipment; Key 8, 9 (3" Long) - Optional Equipment | 1 | Service part / kit | Amazon eBay |
| 338-1413 | Harness, Wiring | 1 | Service part / kit | Amazon eBay |
| 402-0242 | Cushion, Vibration - Engine End | 2 | Service part / kit | Amazon eBay |
| 402-0244 | Cushion, Vibration - Generator End | 2 | Service part / kit | Amazon eBay |
| 402-0282 | 4 ftSnubber, Shock Mounting - Begin Spec K 34 | 4 | Service part / kit | Amazon eBay $15.99 |
| 402-0284 | Breaker, Circuit - Spec A through F Bracket, Circuit Breaker Mounting - Spec A through F Screw, Round Head - Circuit Breaker Mounting (#6-32 x 1/4”) - Spec A through F Washer, Lock - Circuit Breaker Mounting (#6) - Spec A through F | 1 | Service part / kit | Amazon eBay |
| 402-0285 | 2 Engine End | 2 | Service part / kit | Amazon eBay |
| 402-0302 | Hardware Package | 1 | Service part / kit | Amazon eBay |
| 402-0328 | Bushing, Spacer - Vibration Mount | 4 | Service part / kit | Amazon eBay |
| 405-1265 | Pan, Drip | 1 | Service part / kit | Amazon eBay $70.00 |
| 405-1400 | Pan, Drip | 1 | Service part / kit | Amazon eBay |
| 501-0001 | Line, Flexible Fuel (Order by Length) 6" Long | 1 | Service part / kit | Amazon eBay |
| 502-0001 | Screw, Cap - Hex Head | 1 | Service part / kit | Amazon eBay |
| 502-0019 | 1 Gasoline Sets - Spec A through N | 1 | Service part / kit | Amazon eBay |
| 502-0020 | sElbow, Pipe - Oil Seader Mount ing . | 1 | Service part / kit | Amazon eBay |
| 502-0033 | Adapter, Pipe - Hex | 1 | Service part / kit | Amazon eBay |
| 502-0037 | 1 All Sets - Begin Spec P | 1 | Service part / kit | Amazon eBay |
| 502-0041 | Pipe, Elbow - Street, 90'. Brass | 1 | Service part / kit | Amazon eBay |
| 502-0054 | Elbow, Street - 90 DEG. (3/4NPT) | 40 | Service part / kit | Amazon eBay |
| 502-0065 | ELBOW, NOZZLE (Fuel Return Line) Inverted 45 Degrees (#1 and 4 Cylinders) | 2 | Service part / kit | Amazon eBay |
| 502-0235 | Connector, Restricted - Cylinder Head | 1 | Service part / kit | Amazon eBay |
| 502-0255 | Washer, Lock | 1 | Service part / kit | Amazon eBay |
| 502-0281 | Adapter, Pipe - Hex with Restrictor Plug Adapter, Pipe - Hex | 1 | 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 |
| 505-0274 | Spec A through N Spec P through S Tee, Restricted - Front Cylinder Head - Spec A | 7 | Service part / kit | Amazon eBay |
| 505-0485 | Tee, Reducer - Exhaust | 1 | Service part / kit | Amazon eBay |
| 505-0493 | Elbow (1-1/4" x 90°) | 1 | Service part / kit | Amazon eBay |
| 505-0617 | Bushing, Reducer (1-1/4" x 1") | 1 | Service part / kit | Amazon eBay |
| 505-0624 | Nipple (1 x 2"), Exhaust | 2 | Service part / kit | Amazon eBay |
| 505-0625 | Nipple, Close (1-1/4") | 1 | Service part / kit | Amazon eBay |
| 508-0102 | Washer, Insulator (Mica) | 2 | Service part / kit | Amazon eBay |
| 509-0053 | Plug, 1/8" - Adapter | 1 | Service part / kit | Amazon eBay |
| 510-0046 | • 12 Spec A Only | 1 | Service part / kit | Amazon eBay |
| 515-0001 | Key, Woodruff | 1 | Service part / kit | Amazon eBay |
| 515-0153 | Key, Flywheel to Crankshaft | 1 | Service part / kit | Amazon eBay |
| 516-0072 | Pin, Drive - Bearing Stop | 4 | Service part / kit | Amazon eBay |
| 517-0053 | 1 "Plug, Expansion Rear Camshaft Opening | 1 | Service part / kit | Amazon eBay |
| 517-0059 | Plug (1/4"), Washer Drain | 2 | Service part / kit | Amazon eBay |
| 518-0188 | FLYWHEEL 6A | 1 | Service part / kit | Amazon eBay |
| 526-0014 | 4 ttWasher (29/64" I.D. x 1-1/2" O.D. x 1/8") Only with Cone Shaped Cushions | 4 | 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 — 968-0223 Onan MDJA Parts Manual (6-1981) (Cummins/Onan)