Service parts for the XQ125
Grouped by system, with how many of each the parts manual calls for.
Electrical
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 | 110 kW |
| Standby kVA | 137 |
| Prime power | 100 kW |
| Emissions | U.S. EPA Tier 4 Final |
| Controller | XQCP |
| Oil capacity | 9.4 L |
| Alternator | LC3114F (4-pole, Class Class H insulation) |
| Voltage options | 480/277 V, 208/120 V, 240/120 V, 600 V, 349 V, 480 V, 277 V |
| Phase | 3-phase |
| Rated current | 132 A |
| Battery cranking | 850 CCA |
| Battery voltage | 12V V |
| Battery quantity | 1 |
| Coolant capacity | 18.3 L |
| Max ambient | 55 °C |
| Dimensions (L×W×H) | 3261×1243×1856 mm |
| Dry weight | 2372 kg |
| Wet weight | 2876 kg |
| Sound level | 66.0 dBA @ 7 m |
| Fuel tank | 568.0 L |
| Tank runtime | 28 hr |
Engine
| Oil capacity | 9.4 L |
|---|---|
| Coolant capacity | 18.3 L |
| Displacement | 4.4 L |
| Aspiration | T, TA |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Caterpillar C4.4| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Dry replaceable paper element type with restriction indicator | — | |||
| Fuel filter | Replaceable Element | — | 500 hr | ||
| Oil filter | Spin-On, Full Flow | — | 500 hr | ||
| Battery | CAT 230-6368 (12.5VDC) | 230-6368 | eBay $204.30 | ||
| Belt | Not specified | — | 3000 hr | ||
| Coolant | Standard ambient temperatures up to 50° C (122° F) | 17.1 L | — | ||
| Coolant filter | Radiator and cooling fan complete with protective guards | — | |||
| Oil | Replaceable Element | — | 500 hr | ||
| Spark plug | Not specified | — |
Service intervals
4| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Engine oil | Change | 500 hr | 500-hour engine oil change interval | |
| Fuel filter | Change | 500 hr | Oil and fuel filter change intervals: 500 hrs | |
| Oil filter | Change | 500 hr | ||
| Multi-vee belts | Replace | 3000 hr | 3,000 hrs service interval |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Service specifications
13| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Compression ratio | 16.5:1 | ||
| Other | Generator pitch | 2/3 | ||
| Other | Harmonic Distortion (THD) | Less than 5 | % | |
| Other | Number of leads | 12 | ||
| Other | Telephone Influence Factor (TIF) | Less than 50 | ||
| Other | Wave form deviation | 3 | % | |
| Pressure | Oil Pressure | 63 | 5 min at 110 kW (readings 62-63 during test) | |
| Speed | Hertz/Cycles | 60 | Hz | throughout test |
| Speed | Overspeed capability | 125 | % of rated | |
| Temperature | Ambient Temperature | 64 | °F | 5 min at 110 kW (readings 64-65°F) |
| Temperature | Coolant Temperature | 187 | °F | 5 min at 110 kW (readings 187-188°F, 180°F during cool down) |
| Voltage | DC Voltage | 13.7 | throughout test | |
| Voltage | Voltage regulation | Less than ± 1⁄2% | % | voltage gain (adjustable to compensate for engine speed droop and line loss) |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Recommended fluids
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | 50/50 Extended Life Coolant | 18.3 L | Engine & radiator coolant capacity |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Voltage reconnection
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 208/120V | 3-phase | 4-position rotary switch | 12 | Optional 600V generator |
| 240/120V | 1-phase | 4-position rotary switch | 12 | Optional 600V generator |
| 277/480 | 3 | MULTI | Generator end is 12 lead reconnectable; equipped with PMG permanent magnet generator | |
| 480/277V | 3-phase | 4-position rotary switch | 12 | Optional 600V generator |
| 600/347V | 3-phase | 4-position rotary switch | 12 | Optional 600V generator |
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 size generator is the Caterpillar XQ125?
The Caterpillar XQ125 is rated 110 kW standby (137.0 kVA).
What engine does the Caterpillar XQ125 use?
The Caterpillar XQ125 is powered by the Caterpillar C4.4 engine.
Is the Caterpillar XQ125 diesel or gas?
The Caterpillar XQ125 runs on Diesel.
How much oil does the Caterpillar XQ125 take?
The Caterpillar C4.4 engine in the Caterpillar XQ125 has an oil capacity of 9.4 liters.
How much coolant does the Caterpillar XQ125 hold?
The Caterpillar XQ125 cooling system holds 18.3 liters (4.8 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the prime power rating of the Caterpillar XQ125?
The Caterpillar XQ125 is rated 100 kW prime (125 kVA), against 110 kW standby.
How loud is the Caterpillar XQ125?
The Caterpillar XQ125 is rated at 66.0 dBA at 7 m, per the manufacturer specification sheet.
How much does the Caterpillar XQ125 weigh?
The Caterpillar XQ125 has a dry weight of 2372 kg (5229 lb).
What size fuel tank does the Caterpillar XQ125 have?
The Caterpillar XQ125 has a 568 liter (150 US gallon) fuel tank, giving about 28 hours of runtime.
What voltages is the Caterpillar XQ125 available in?
The Caterpillar XQ125 is offered in 480/277 V, 208/120 V, 240/120 V, 600 V, 349 V, 480 V, 3-phase-phase.
What battery does the Caterpillar XQ125 use?
The Caterpillar XQ125 uses 1 battery, 12V V each, 850 CCA, per the manufacturer specification sheet.
What alternator does the Caterpillar XQ125 use?
The Caterpillar XQ125 uses a LC3114F alternator. It has 4 poles. Insulation class Class H.
Parts
63| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 033-7854 | Filter fuel | 1 | Fuel filter | Amazon $63.31 eBay $63.31 |
| 093-7521 | Filter hydraulic | 1 | Hydraulic filter | eBay $29.99 KuduParts $18.00 FridayParts $19.99 |
| 110-6326 | Air Primary | 1 | Air filter | Amazon $204.17 eBay $40.00 KuduParts $30.00 FridayParts $131.99 |
| 119-4740 | Hydraulic filter | 1 | Hydraulic filter | eBay $15.00 KuduParts $18.00 FridayParts $20.00 |
| 123-2367 | Air Primary | 1 | Air filter | Amazon $165.38 eBay $89.77 KuduParts $30.00 FridayParts $32.00 |
| 130-4678 | Air Primary Filter | 1 | Air filter | Amazon $168.00 eBay $70.00 FridayParts $46.99 KuduParts $49.00 |
| 130-4679 | Air Secondary Filter | 1 | Air filter | Amazon $168.00 eBay $35.00 |
| 160-7163 | Air Filter | 1 | Air filter | Amazon eBay |
| 1M7250 | Air filter housing | Air filter | eBay $19.48 KuduParts $18.00 FridayParts $19.90 | |
| 1R-1804 | Fuel/Water Separator | 2 | Fuel filter | Amazon $20.24 eBay $10.99 eBay $19.49 KuduParts $18.00 FridayParts $19.99 |
| 1R1804 | Filter fuel | Fuel filter | Amazon $20.24 eBay $10.99 eBay $19.49 KuduParts $18.00 FridayParts $19.99 | |
| 206-5234 | Air Primary Filter | 1 | Air filter | Amazon $60.69 eBay $41.99 FridayParts $40.50 |
| 211-2660 | Air filter assy | Air filter | eBay $25.17 | |
| 220-1523 | Engine Oil | 1 | Oil filter | Amazon $26.99 Amazon $25.91 eBay $21.56 eBay $21.56 KuduParts $18.00 FridayParts $19.95 |
| 225-3150 | Starter motor | 1 | Starter | eBay $699.99 SinoCMP $289.00 |
| 230-8999 | Fuel injector | Injector | eBay $70.00 FridayParts $215.00 | |
| 232-6662 | Glow plug | Glow plug | eBay $55.99 | |
| 234-2988-RK | Turbocharger repair kit | Turbocharger | eBay | |
| 247-1380 | Air Filter | 1 | Air filter | Amazon $45.00 eBay $33.95 |
| 252-6338 | Filter water separator | 1 | Fuel filter | Amazon $39.00 Amazon $35.46 eBay $17.42 eBay |
| 254-2269 | Thermostat | Thermostat | eBay $55.26 | |
| 258-8538 | Fuel | 1 | Fuel filter | Amazon eBay $699.99 |
| 263-0544 | Air filter | 1 | Air filter | Amazon eBay |
| 270-7361 | Air filter | 1 | Air filter | Amazon eBay |
| 270-7362 | Air filter | 1 | Air filter | Amazon eBay |
| 270-7368 | Air filter | 1 | Air filter | Amazon $168.00 eBay $85.00 |
| 276-1804 | Fuel | 1 | Fuel filter | Amazon eBay $49.99 KuduParts $12.00 |
| 276-1806 | Fuel Filter | 1 | Fuel filter | Amazon $22.00 eBay $19.79 |
| 276166 | repair kit oil pump | Pump | Amazon eBay | |
| 287-6052 | Fuel | 2 | Fuel filter | Amazon $52.25 eBay $29.99 KuduParts $114.00 FridayParts $118.95 |
| 288-4572 | Fuel | 1 | Fuel filter | Amazon eBay $395.00 |
| 299-8229 | Filter fuel | 1 | Fuel filter | Amazon $35.00 eBay $26.42 KuduParts $21.00 FridayParts $23.35 |
| 299-9265 | Lift/transfer pump | Pump | eBay $75.09 FridayParts $75.02 | |
| 308-7298 | Filter water separator | 1 | Fuel filter | Amazon $38.59 eBay $26.85 FridayParts $34.68 KuduParts $41.00 |
| 321-2411 | Air Primary Filter | 1 | Air filter | Amazon $99.99 eBay $94.60 FridayParts $89.99 |
| 321-2413 | Air Filter | 1 | Air filter | Amazon eBay $295.00 |
| 339-7767 | Alternator | Alternator | eBay $147.25 FridayParts $157.50 | |
| 375-2606 | Twin Turbocharger Alignment Tool | Alignment tool | Amazon eBay | |
| 7W-2326 | Engine Oil | 1 | Oil filter | Amazon $29.99 eBay $24.82 eBay $14.00 KuduParts $25.00 FridayParts $26.85 |
| 7W2326 | Filter oil | Oil filter | Amazon $29.99 eBay $24.82 eBay $14.00 KuduParts $25.00 FridayParts $26.85 | |
| AEXQ3237-00 | Keyless push-to-start engine control | Keyless push-to-start engine control | Amazon eBay | |
| AN500T0010 | STARTER MOTOR | Starter | Amazon eBay | |
| AN500T0093 | ALTERNATOR | Alternator | Amazon eBay | |
| KM-BD-909002 | Hydraulic Track Adjuster Seal Kit | Seal | Amazon eBay | |
| KM-BD-909005 | Hydraulic Track Adjuster Seal Kit | Seal | Amazon eBay | |
| KM-BD-909006 | Hydraulic Track Adjuster Seal Kit | Seal | Amazon eBay | |
| KM-BD-909007 | Hydraulic Track Adjuster Seal Kit | Seal | Amazon eBay | |
| KM-BD-909016 | Hydraulic Track Adjuster Seal Kit | Seal | Amazon eBay | |
| 20382-3Zaz | Time delay relay No. 6 | 1 | Service part / kit | Amazon eBay |
| 2255441 | Connecting rod (Grade L) | Service part / kit | Amazon eBay $68.18 FridayParts $94.00 | |
| 2255453 | Connecting rod (Grade J) | Service part / kit | Amazon eBay $82.72 FridayParts $79.86 | |
| 2255454 | Connecting rod (Grade H) | Service part / kit | Amazon eBay $91.14 FridayParts $104.50 | |
| 230-6368 | Battery | 1 | Service part / kit | eBay $204.30 |
| 24aOeLa | Time delay relay No. 8 | 1 | Service part / kit | Amazon eBay |
| 32RELAYS | Relay No. 4 | 1 | Service part / kit | Amazon eBay |
| 3590719 | Special connecting rod (Grade R, beam length 6.5247-6.5260 inch) | Service part / kit | Amazon eBay $144.99 | |
| 3590720 | Special connecting rod (Grade O, beam length 6.5229-6.5242 inch) | Service part / kit | Amazon eBay $66.50 | |
| 3590721 | Special connecting rod (Grade W, beam length 6.5211-6.5224 inch) | Service part / kit | Amazon eBay $124.99 | |
| 3590722 | Special connecting rod (Grade G, beam length 6.5193-6.5206 inch) | Service part / kit | Amazon eBay $66.05 | |
| 3590723 | Special connecting rod (Grade P, beam length 6.5175-6.5188 inch) | Service part / kit | Amazon eBay $196.60 | |
| 3590724 | Special connecting rod (Grade B, beam length 6.5157-6.4961 inch) | Service part / kit | Amazon eBay $71.20 FridayParts $107.33 | |
| 877202-2 | Ignition kit | Service part / kit | Amazon eBay | |
| CHARGEPRO5i5 | GUEST battery charger | 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.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 25% | 7.5 | 1.97 |
| Prime | 50% | 14.4 | 3.8 |
| Prime | 75% | 20.9 | 5.51 |
| Prime | 100% | 28.4 | 7.49 |
| Standby | 100% | 31.3 | 8.27 |
Available documents
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.