Service parts for the 4R0120 DS125
Grouped by system, with how many of each the parts manual calls for.
Fuel 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 | 125 kW |
| Standby kVA | 156 |
| Prime power | 111 kW |
| Emissions | Tier 3 |
| Controller | Digital Control Panel |
| Oil capacity | 15.8 L |
| Alternator | 363CSL1607 |
| Voltage options | 208 V, 240 V, 380 V, 480 V, 600 V |
| Phase | 3 |
| Rated current | 134 A |
| Power factor | 0.8 |
| Battery group | 31 |
| Battery cranking | 950 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 20.8 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 2336×1121×1422 mm |
| Dry weight | 1216 kg |
| Sound level | 83.1 dBA @ 7 m |
Engine
| Oil capacity | 15.8 L |
|---|---|
| Coolant capacity | 7.0 L |
| Displacement | 4.8 L |
| Aspiration | Charged Air Cooling |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Mercedes Benz OM924LA| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Dry Type | — | 500 hr | ||
| Fuel filter | With Water Separator | A9060920205 | 250 hr | Amazon eBay $28.98 PartsGeek $25.97 | |
| Oil filter | Full Flow | 0001801609 | 250 hr | Amazon eBay $83.59 PartsGeek $19.97 | |
| Coolant | 20.8 L | — | 2000 hr | ||
| Oil | Diesel Grade | 15.8 L | — | 250 hr |
Recommended fluids
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Fuel | Diesel #2 | Recommended Fuel for diesel gensets (e.g. DS30, DS40, DS50, DS80, DS100, DS125, DS150, DS180, DS200, DS230, DS250, DS275, DS300, DS350, DS400, DS450, DS500) |
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 |
|---|---|---|---|---|
| 208V | 3 | 12 LEAD WYE | Example from MTU 4R0063 GS30 | |
| 240V | 1 | 12 LEAD | Example from MTU 4R0063 GS30 SYSTEM RATINGS connection row | |
| 240V | 1 | 4 LEAD | Example from MTU 4R0063 GS30 | |
| 240V | 3 | 12 LEAD DELTA | Example from MTU 4R0063 GS30 | |
| 380V | 3 | 12 LEAD WYE | Example from MTU 4R0063 GS30 | |
| 480V | 3 | 12 LEAD WYE | Example from MTU 4R0063 GS30 | |
| 600V | 3 | 4 LEAD WYE DOUBLE DELTA | Example from MTU 4R0063 GS30 |
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
How many kW is the MTU 4R0120 DS125?
The MTU 4R0120 DS125 is rated 125 kW standby (156.0 kVA).
What engine does the MTU 4R0120 DS125 use?
The MTU 4R0120 DS125 is powered by the Mercedes Benz OM924LA engine.
What kind of fuel does the MTU 4R0120 DS125 run on?
The MTU 4R0120 DS125 runs on diesel.
What is the oil capacity of the MTU 4R0120 DS125?
The Mercedes Benz OM924LA engine in the MTU 4R0120 DS125 has an oil capacity of 15.8 liters.
How much coolant does the MTU 4R0120 DS125 hold?
The MTU 4R0120 DS125 cooling system holds 20.8 liters (5.5 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the continuous rating of the MTU 4R0120 DS125?
The MTU 4R0120 DS125 is rated 111 kW prime (139 kVA), against 125 kW standby.
What is the sound level of the MTU 4R0120 DS125?
The MTU 4R0120 DS125 is rated at 83.1 dBA at 7 m, per the manufacturer specification sheet.
What is the dry weight of the MTU 4R0120 DS125?
The MTU 4R0120 DS125 has a dry weight of 1216 kg (2680 lb).
What voltage does the MTU 4R0120 DS125 produce?
The MTU 4R0120 DS125 is offered in 208 V, 240 V, 380 V, 480 V, 600 V, 3-phase.
What battery does the MTU 4R0120 DS125 use?
The MTU 4R0120 DS125 uses 1 battery, 12 V each, 950 CCA, group 31, per the manufacturer specification sheet.
What alternator does the MTU 4R0120 DS125 use?
The MTU 4R0120 DS125 uses a 363CSL1607 alternator.
Which oil filter part number does the MTU 4R0120 DS125 take?
The MTU 4R0120 DS125 uses oil filter part number 0001801609.
What fuel filter does the MTU 4R0120 DS125 use?
The MTU 4R0120 DS125 uses fuel filter part number A9060920205.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 50% | 30.4 | 8.03 |
| Prime | 75% | 42.5 | 11.23 |
| Prime | 100% | 56.1 | 14.82 |
| Standby | 50% | 5.2 | 1.4 |
| Standby | 75% | 7.5 | 2.0 |
| Standby | 100% | 9.9 | 2.6 |
Available documents
This page was generated from the 7 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.