Service parts for the 1120 DFLC
Grouped by system, with how many of each the parts manual calls for.
Air intake
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 |
| Standby power | 1120 kW |
| Prime power | 1120 kW |
| Controller | 3100, PCC PowerCommand, PowerCommand 2100 |
| Oil capacity | 177.0 L |
| Phase | 1 or 3 |
| Battery voltage | 24 V |
| Coolant capacity | 351 L |
| Max ambient | 40 °C |
| Dry weight | 10300 kg |
| Fuel tank | 2000.0 L |
Engine
| Oil capacity | 204.0 L |
|---|---|
| Coolant capacity | 400.0 L |
| Displacement | 50.3 L |
| Aspiration | Turbocharged |
| Rated speed | 1500 rpm |
Maintenance & consumables
for the Cummins/Onan KTA50-G3| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Cleaner - Throwaway Type | 140-2098 | Amazon eBay | ||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | ×4 | — | |||
| Belt | Decal - Caution Fan Drive & Lube Components Group Belt. | 98-5347 | Amazon eBay | ||
| Coolant | 440.0 l | — | |||
| Oil | 177.0 l | — | |||
| Spark plug | — |
Common questions
What is the power rating of the Cummins/Onan 1120 DFLC?
The Cummins/Onan 1120 DFLC is rated 1120 kW standby.
Which engine powers the Cummins/Onan 1120 DFLC?
The Cummins/Onan 1120 DFLC is powered by the Cummins/Onan KTA50-G3 engine.
What kind of fuel does the Cummins/Onan 1120 DFLC run on?
The Cummins/Onan 1120 DFLC runs on Diesel.
What's the oil capacity on a Cummins/Onan 1120 DFLC?
The Cummins/Onan KTA50-G3 engine in the Cummins/Onan 1120 DFLC has an oil capacity of 204.0 liters.
What air filter does the Cummins/Onan 1120 DFLC use?
The Cummins/Onan 1120 DFLC uses air filter part number 140-2098.
Troubleshooting
6Fault codes
| Code | Meaning |
|---|---|
| 121 | Speed Signal Lost |
| 135 | Oil Pressure Sensor High |
| 141 | Oil Pressure Sensor Low |
| 143 | Pre-Low Oil Pressure Sensor |
| 144 | Coolant Temperature Sensor High |
| 145 | Coolant Temperature Sensor Low |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan 1120 DFLC troubleshooting guide (53 entries) →
Parts
99| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 122-0757 | Filter. Water - W/Corosion Inhibiting Chemical | Filter | Amazon | |
| 140-2096 | Element, Primary (Outer) | 2 | Air filter | Amazon eBay |
| 140-2097 | Cleaner, Air (Includes Elements) | 1 | Air filter | Amazon eBay FridayParts $856.89 |
| 140-2467 | Element, Safety (Inner) | 2 | Air filter | Amazon eBay |
| 149-2232 | Indicator, Air Restriction (Includes Fitting) | 2 | Sensor | Amazon eBay |
| 193-0244 | Sender, Pressure - 0i1 | 1 | Sensor | Amazon eBay |
| 193-0375 | # Sender, Water Temperature | 1 | Sensor | Amazon eBay |
| 309-0269 | Switch, Low Engine Temperature (S4) | 1 | Sensor | Amazon eBay |
| 309-0272 | Regulator, Voltage - 24 VDC (Used on 35 A MP Alternator) | 1 | Alternator | Amazon eBay |
| 309-0561 | Alternator & Drive Components Group Pulley. Alternator - Multi Groove (Use with 35 A MP Alternator) | 1 | Oil filter | Amazon eBay |
| 338-2278 | Harness. Wiring - AC (Includes Terminal Block & Cable Ties) [Used only with meters] | 1 | Harness | Amazon eBay $77.00 |
| 338-2529 | Harness. Wiring | 1 | Harness | Amazon eBay |
| 338-2925 | Hose, Radiator | 1 | Hose | Amazon |
| 503-0183 | Clamp, Hose | 2 | Hose | Amazon eBay |
| 505-0324 | Hose. Bulk (Sold by the Foot) Two Feet Required Nipple, Pipe - Half (3/4 NPT x 2"LG) | 1 | Hose | Amazon eBay |
| 508-0292 | Washer, Sealing - Copper | 1 | Washer | Amazon eBay |
| 98-5347 | Decal - Caution Fan Drive & Lube Components Group Belt. | 2 | Belt | Amazon eBay |
| 98-5759 | Drive - Multi Groove Hose, Flexible - Lube (Grease) | 1 | Hose | Amazon eBay |
| 98-5842 | Clamp, Hose - T-Bolt Type (3.5" NON) | 1 | Hose | Amazon |
| 016-40820 | Harness, Wiring (Includes Cable Ties and Terminals) | 17 | Service part / kit | Amazon |
| 102-1335 | Plug, Oil Drain | 1 | Service part / kit | Amazon eBay |
| 140-2098 | Hood, Air Inlet (Includes Mounting Clamp) | 1 | Service part / kit | Amazon eBay |
| 300-2856 | Board Assy, Printed Circuit | 1 | Service part / kit | Amazon eBay |
| 300-2863 | Board Assy, Printed Circuit - Relay Assembly- (A14) | 1 | Service part / kit | Amazon eBay |
| 301-9054-01 | Decal - Panel Front Markings (Control With Meters) | 1 | Service part / kit | Amazon eBay |
| 301-9054-02 | Clip - Fastener | 2 | Service part / kit | Amazon eBay |
| 301-9054-03 | Clip - Fastener | 2 | Service part / kit | Amazon eBay |
| 302-1720 | Meter, Frequency (M23) | 1 | Service part / kit | Amazon eBay |
| 302-1753 | Ammeter (M22) See Current Transformer & Ammeter Installation Figure for Parts) | 1 | Service part / kit | Amazon |
| 302-1800 | Ammeter (M22) Scale in Amps as Indicated 0-2000/0-4000 (600 VAC Application) 0-3000/0-6000 (120-480 VAC Application) | 1 | Service part / kit | Amazon |
| 302-1908 | Screw. Cap - Hex Head (M8-1.25 x 35MM) | 2 | Service part / kit | Amazon |
| 305-0818-02 | EOOO-21002 | 1 | Service part / kit | Amazon eBay |
| 307-1056 | Relay. 24 VDC | 3 | Service part / kit | Amazon eBay $49.00 |
| 307-1987 | Clip. Relay | 6 | Service part / kit | Amazon eBay |
| 308-0882 | Decal - Panel Front Markings (Control Without Meters) | 1 | Service part / kit | Amazon eBay |
| 309-0436 | Switch, Thermostatic - High Water Temperature (PRE-ALARM)(216"F) Switch. Thermostatic - High Water Temperature (SHUTDOWN) | 1 | Service part / kit | Amazon eBay |
| 309-0437 | (222"F) | 1 | Service part / kit | Amazon eBay |
| 319-0447 | Bracket. Mounting - Relay | 1 | Service part / kit | Amazon eBay |
| 319-0754 | Tie. Cable | 1 | Service part / kit | Amazon eBay |
| 322-0363 | Component 322-0363 | 1 | Service part / kit | Amazon eBay |
| 323-0804 | Screw. Machine - Round Head with IT Lock Washer (#6-32 x 1/2") | 3 | Service part / kit | Amazon eBay |
| 323-1200 | # Socket, Contact (Used in J1, J2) | 12 | Service part / kit | Amazon eBay |
| 323-1304 | tiotming, Umector | 1 | Service part / kit | Amazon eBay |
| 323-1306 | Genset component (SJB series) | 1 | Service part / kit | Amazon eBay |
| 332-0052 | Clamp, Loop | 1 | Service part / kit | Amazon eBay |
| 332-0607 | Block, Terminal (T81) | 1 | Service part / kit | Amazon eBay |
| 332-1279 | Terminal. Lug - Ring (3/8 | 6 | Service part / kit | Amazon eBay |
| 332-1292 | Terminal Board (Includes Parts Marked #) | 1 | Service part / kit | Amazon eBay |
| 332-1445 | Tie. Cable | 1 | Service part / kit | Amazon eBay |
| 332-1673 | Terminal, Wire - Spade | 4 | Service part / kit | Amazon eBay |
| 332-2634 | Clamp, Retainer 4 Prior To December 1996 Production (Mounted On Top And Side Of Control Box Wrapper) | 10 | Service part / kit | Amazon eBay |
| 332-2723 | Strip. Marker | 1 | Service part / kit | Amazon eBay |
| 338-1835 | Harness, Wiring (A13 to A l l ) | 1 | Service part / kit | Amazon eBay |
| 338-1836 | Harness, Wiring (A14 to A l l ) | 1 | Service part / kit | Amazon eBay |
| 338-1904 | Harness. Wiring (A15 to All) | 1 | Service part / kit | Amazon eBay |
| 338-2532 | Terminal. Lug - Forked (No. 6 Screw) | 4 | Service part / kit | Amazon eBay |
| 355-0093 | Voltmeter (M21) Dual Scale 0-300/0-600V Single Scale 0-750V | 1 | Service part / kit | Amazon eBay |
| 406-0333 | Component 406-0333 | 1 | Service part / kit | Amazon eBay |
| 406-0334 | Clip, Retaining - Turnbutton Fastener | 1 | Service part / kit | Amazon eBay |
| 501-0520 | Screw, Cap - Hex Head (3/8-24 x 5/8") | 1 | Service part / kit | Amazon |
| 501-0524 | Washer, Lock - EIT (3/8") | 1 | Service part / kit | Amazon |
| 504-0028 | Valve, Radiator Drain | 1 | Service part / kit | Amazon eBay |
| 505-0007 | Belt. Drive - Multi Groove (Used with 35 A MP Alternator * Pulley, Alternator - Multi Groove (Use with 75 A MP Alternator) | 2 | Service part / kit | Amazon eBay |
| 505-0021 | Bushing, Pipe - Reducer (3/4º to 1/2º) | 1 | Service part / kit | Amazon eBay |
| 505-0100 | Nipple, Pipe - Close (1/2”) | 1 | Service part / kit | Amazon eBay $9.34 |
| 505-0102 | Filter. Water - W/Corosion Inhibiting | 1 | Service part / kit | Amazon eBay |
| 505-0117 | Bushing, Reducer - Flush, Brass (1/2' NPT x3/8° NPT) | 1 | Service part / kit | Amazon eBay |
| 505-0132 | Nipple, Pipe - Close (3/4 NPT x l-3/8"LG) Elbow. Pipe - 90* (3/4 NPT) | 1 | Service part / kit | Amazon eBay |
| 508-0015 | Washer, Insulating - Fiber (#8) | 1 | Service part / kit | Amazon eBay |
| 517-0131 | Capacitor (Used across Voltmeter Terminals on some Sets) | 1 | Service part / kit | Amazon eBay |
| 800-0062 | Nut, Insulated | 1 | Service part / kit | Amazon |
| 800-0270 | DCA4 Service Pre-Charging Complete System | 1 | Service part / kit | Amazon eBay |
| 800-2060 | Screw, Cap - Hex Head (M8x 1.25 x35) | 1 | Service part / kit | Amazon eBay |
| 809-0035 | Screw, Machine - Thread Cutting, Round Head (#8 X 3/4') | 1 | Service part / kit | Amazon eBay |
| 812-0063 | Screw, Machine - Round Head | 2 | Service part / kit | Amazon eBay |
| 812-0065 | Screw, Machine - Round Head (#6 - 32 x 5/8') | 2 | Service part / kit | Amazon eBay |
| 812-0084 | Screw, Machine - Round Head (#8-32 x 1) | 2 | Service part / kit | Amazon eBay |
| 815-0388 | Bracket. Mounting - Relay Lead(s), Electrical Wire, Electrical - 20 AW G, Insulated Terminal, Wire - Forked, 18-20 Gauge | 6 | Service part / kit | Amazon eBay |
| 815-0544 | Screw, Machine - Round Head IT Washer (#6 - 32 x 1/2') | 3 | Service part / kit | Amazon eBay |
| 821-0004 | Screw, Self-Locking - Hex | 4 | Service part / kit | Amazon eBay |
| 850-0050 | Washer, Lock - Spring (3/8”) | 4 | Service part / kit | Amazon eBay |
| 853-0003 | Washer, Lock - ET (#6) | 1 | Service part / kit | Amazon eBay |
| 856-0008 | Washer, Lock - EIT (5/16'1) | 1 | Service part / kit | Amazon eBay |
| 856-0010 | Washer, Lock - EIT (3/8') | 1 | Service part / kit | Amazon eBay |
| 870-0131 | Nut. Hex - with ET (#10-32) | 2 | Service part / kit | Amazon eBay |
| 870-0196 | Nut, Insulating (#8) | 1 | Service part / kit | Amazon eBay |
| 98-4732 | Caution | 1 | Service part / kit | Amazon eBay |
| 98-4798 | Decal - Caution "7# PSI HOT WATER SYSTEM" | 1 | Service part / kit | Amazon |
| 98-5298 | Decal - Panel Rear Markings (All Control Panels) | 1 | Service part / kit | Amazon |
| 98-5299 | Decal - Panel Rear Markings (All Control Panels) | 1 | Service part / kit | Amazon |
| 98-5316 | Decal - Panel Rear Markings (All Control Panels) | 1 | Service part / kit | Amazon eBay |
| 98-5387 | Nut, Self-Locking - with ET Lockwasher (#10-32) | 1 | Service part / kit | Amazon eBay |
| 98-5393 | Screw, Tapping - Round Head (#8 x 3/4") | 2 | Service part / kit | Amazon |
| 98-5822 | Bushing, Reducer - Flush (1/2 NPT x 3/8 NPT) | 3 | Service part / kit | Amazon |
| 98-6108-03 | Decal - Model Identification | 1 | Service part / kit | Amazon eBay |
| 98-6111-03 | ONAN GEN SET CUMMINS GEN SET | 1 | Service part / kit | Amazon eBay |
| 98-6139-03 | CUNMINS ONAN GEN SET | 1 | Service part / kit | Amazon eBay |
| 98-6169 | Terminal Assembly (Includes Replaceable Items 26 thru 29) | 1 | Service part / kit | Amazon eBay |
| F-2375 | A single line drawing of the prime power system | 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.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 100% | 289.0 | 75.34 |
Available documents
Spec sheet — 1340 DFLE (Cummins/Onan)Parts manual — Cummins-DFLB-DFLC-DFLE-generator-set-parts-manual (Cummins/Onan)