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MTU 12V4000 DS1250 Generator Set

The MTU 12V4000 DS1250 is a 1250 kW (1562 kVA) diesel standby generator set powered by a MTU 12V4000G74S engine. It is available at 380 V, 480 V, 600 V and 4160 V, 3-phase, 60 Hz and rated 2156 A. It holds about 260 L (68.7 gal) of oil and 583 L (154.0 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 4 group-8 batteries rated 2800 CCA at 24 V. The set measures 6170×2260×2900 mm (242.9×89.0×114.2 in), weighs about 13786 kg (30393 lb) and produces 91.9 dBA at 7 m.

1250 kW
Standby
57.2 L
Displacement
260.0 L
Oil capacity
1
Document types

How to read your MTU serial & model number →

Typical fuel consumption for 1250–1255 kW Diesel generators →

Compare with other 1250–1255 kW Diesel generators →

Service parts for the 12V4000 DS1250

Grouped by system, with how many of each the parts manual calls for.

Fuel system

1 required

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

Fueldiesel
Frequency60.0 Hz
Standby power1250 kW
Standby kVA1562
Prime power1135 kW
EmissionsEPA Tier 2
Oil capacity260.0 L
Alternator50.2 L8
Voltage options380 V, 416 V, 440 V, 480 V, 600 V, 4160 V, 1247 V, 1320 V, 1380 V
Phase3
Rated current[2156, 1707, 1365, 197] A
Power factor0.8
Battery group8D
Battery cranking2800 CCA
Battery voltage24 V
Battery quantity4
Coolant capacity583 L
Max ambient50 °C
Dimensions (L×W×H)6170×2260×2900 mm
Dry weight16413 kg
Sound level91.9 dBA @ 7 m

Engine

MTU 12V4000G74S
Oil capacity260.0 L
Coolant capacity160.0 L
Displacement57.2 L
Aspiration4-Cycle
Rated speed1800 rpm

Filters for the MTU 12V4000G74S

1

Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.

Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:

SystemFilterDescriptionCross-references
Fuel / water separatorP550849Fuel Filter, Water Separator CartridgeNAPA 3763, BALDWIN PF7928, DAVCO 102526, DAVCO 102527 FridayParts $20.90 KuduParts $39.00

Maintenance & consumables

for the MTU 12V4000G74S
ItemSpecCapacityPart #Interval
Air filter—
Fuel filterSecondary×1—
Fuel filterStandard fuel filter33763 Amazon eBay $29.99 PartsGeek $29.97 NAPA $43.99
Oil filter×4—
Battery—
Belt—
Coolant583.0 L—
Coolant filterN/A—
Oil260.0 L—
Spark plug—

Recommended fluids

FluidGradeStandardAmbientCapacityNotes
FuelDiesel #2Recommended 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

VoltagePhaseConnectionLeadsNotes
208V312 LEAD WYEExample from MTU 4R0063 GS30
240V112 LEADExample from MTU 4R0063 GS30 SYSTEM RATINGS connection row
240V14 LEADExample from MTU 4R0063 GS30
240V312 LEAD DELTAExample from MTU 4R0063 GS30
380V312 LEAD WYEExample from MTU 4R0063 GS30
480V312 LEAD WYEExample from MTU 4R0063 GS30
600V34 LEAD WYE DOUBLE DELTAExample 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 12V4000 DS1250?

The MTU 12V4000 DS1250 is rated 1250 kW standby (1562.0 kVA).

What engine is in the MTU 12V4000 DS1250?

The MTU 12V4000 DS1250 is powered by the MTU 12V4000G74S engine.

What kind of fuel does the MTU 12V4000 DS1250 run on?

The MTU 12V4000 DS1250 runs on diesel.

What's the oil capacity on a MTU 12V4000 DS1250?

The MTU 12V4000G74S engine in the MTU 12V4000 DS1250 has an oil capacity of 260.0 liters.

What is the coolant capacity of the MTU 12V4000 DS1250?

The MTU 12V4000 DS1250 cooling system holds 583 liters (154.0 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the prime power rating of the MTU 12V4000 DS1250?

The MTU 12V4000 DS1250 is rated 1135 kW prime (1419 kVA), against 1250 kW standby.

How loud is the MTU 12V4000 DS1250?

The MTU 12V4000 DS1250 is rated at 91.9 dBA at 7 m, per the manufacturer specification sheet.

What is the dry weight of the MTU 12V4000 DS1250?

The MTU 12V4000 DS1250 has a dry weight of 16413 kg (36184 lb).

What voltage does the MTU 12V4000 DS1250 produce?

The MTU 12V4000 DS1250 is offered in 380 V, 416 V, 440 V, 480 V, 600 V, 4160 V, 3-phase.

How many cold cranking amps does the MTU 12V4000 DS1250 require?

The MTU 12V4000 DS1250 uses 4 batteryies, 24 V each, 2800 CCA, group 8D, per the manufacturer specification sheet.

Which alternator is fitted to the MTU 12V4000 DS1250?

The MTU 12V4000 DS1250 uses a 50.2 L8 alternator.

Which fuel filter part number does the MTU 12V4000 DS1250 take?

The MTU 12V4000 DS1250 uses fuel filter part number 33763.

Fuel consumption

RatingLoadL/hgal/h
Prime50%30.48.03
Prime75%42.511.23
Prime100%56.114.82
Standby341.090.0
Standby50%5.21.4
Standby75%7.52.0
Standby100%9.92.6

Available documents

Spec sheet — 231197 PG Spec 12V4000DS1250G04 1250kW 3D T2 60Hz 50C (MTU)Spec sheet — 231197 PG Spec 12V4000DS1250G04 1250kW 3D T2 SCAQMD 60Hz 50C (MTU)Spec sheet — 231198 PG Spec 12V4000DS1250G04 1250kW 3D FC 60Hz 50C (MTU)Spec sheet — 231224 PG Spec 12V4000DS1250G04 1135kW 3F T2 SCAQMD 60Hz 50C (MTU)Spec sheet — 231225 PG Spec 12V4000DS1250G04 1135kW 3F FC 60Hz 50C (MTU)Spec sheet — EngineersGuidebook (MTU)Spec sheet — EngineersGuidebookUpdate102017 (MTU)Spec sheet — MTU-Engineers-Guidebook-2014 (MTU)Spec sheet — MTU12V4000DS1250 1135kW DCCP (MTU)Spec sheet — MTU 12V4000 DS1250 1135kW DCCP (MTU)Spec sheet — MTU 12V4000 DS1250 1250kW Standby (MTU)Spec sheet — mtu4000-12v-ds1250-dccp (MTU)Spec sheet — mtu4000-12v-ds1250-stand (MTU)

This page was generated from the 13 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.

Full service, cheapest listings

Priced items from this model's own parts manual.

Fuel filter 33763$29.97
1 priced item$29.97
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