Cummins · Cummins D6 Commercial Diesel

Cummins C2000 D6

2000 kW standby / 1825 kW prime · Diesel · Liquid-cooled

2000 kW diesel standby generator with QSK60 60L V-16 engine. PowerCommand control, liquid-cooled, for data center, industrial, and mission-critical standby applications requiring multi-megawatt power.

Cummins Cummins C2000 D6 generator — specifications and details
Standby power
2000 kW / 1825 kW prime
Voltage options
277/480V, 346/600V, 4160V, 12470V, 13800V
Frequency / Phase
60 Hz · 3-phase
Engine
Cummins QSK60 · 60L
EPA / Emissions
Tier 2
Data CentersManufacturingCommercialparalleling-arrayutility
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Overview#

The Cummins C2000 D6 is a 2000 kW (2 MW) standby diesel generator set powered by the QSK60 -- a 60-liter, V-16 diesel engine with Modular Common Rail fuel injection (MCRS). Rated at 2500 kVA standby and 2281 kVA prime at 60 Hz, the C2000 D6 delivers multi-megawatt standby power from Cummins' proven mega-diesel platform.

The 2 MW class is the workhorse of large-scale standby power. Data centers, semiconductor fabs, and large hospital campuses frequently specify 2 MW genset modules as their building block for N+1 redundant arrays. The C2000 D6 delivers this capacity with full Cummins vertical integration: engine, alternator, controls, and cooling are all designed and manufactured by Cummins, simplifying procurement and long-term service.

Medium-voltage output options (4160V, 12470V, 13800V) and PowerCommand 2.3/3.3 paralleling controllers enable multi-genset arrays for sites requiring 4-20 MW of standby capacity with redundancy. The QSK60 V-16 delivers a 40,000-hour major overhaul interval under standard standby duty, with fuel consumption of approximately 140 gallons per hour at full load.

Engineering specifications

Fuel system & runtime

Fuel use @ full load
140 GPH
Fuel use @ 75% load
105 GPH
Fuel use @ 50% load
73 GPH

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Estimate runtime for the Cummins C2000 D6

Adjust load percent and tank size to estimate runtime. Pre-filled with this model's spec where available.

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Estimated runtime

1.9 hours(0.1 days)

Fuel consumption ≈ 108.00 GPH at 75% load. Estimate based on industry-typical 1800 RPM standby curves (≈0.07 GPH/kW at full load). Actual consumption varies by engine, ambient temperature, fuel quality, and tuning.

Service intervals

Manufacturer-recommended intervals for the Cummins C2000 D6 under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.

Oil & filter
Every 500 hours or 12 months
Air filter
Every 1000 hours
Fuel filter
Every 500 hours
Major overhaul
≈ 40,000 hours

Common failure modes

What we've seen fail on this platform. Use as a service-planning reference, not a diagnostic — actual failure modes depend heavily on duty cycle and maintenance history.

ComponentSymptomTypical hoursSeverity
Fuel injection system (MCRS)Injector fault codes, rough running, power imbalance between banks—moderate
Turbocharger system (dual turbo)Reduced boost pressure, excessive exhaust smoke, turbo bearing wear—moderate
Cooling system (V-16 dual-circuit)Coolant temperature exceedances, radiator capacity issues at high ambient—severe
Fuel quality / tank degradationFilter clogging, hard starting, injector fouling from stagnant fuel—moderate
Starting system (24V battery bank)Slow crank, failed start on infrequently exercised units—minor

Frequently Asked Questions

What engine does the Cummins C2000 D6 use?
The C2000 D6 uses the Cummins QSK60 -- a 60-liter, V-16 diesel engine with MCRS fuel injection. The QSK60 platform spans the 2000-2500 kW range, with the C2000 D6 positioned at the entry point of this mega-diesel family.
What are the standby and prime ratings of the C2000 D6?
Standby rating is 2000 kW (2500 kVA) at 60 Hz, 0.8 power factor. Prime rating is 1825 kW (2281 kVA). Both at 1800 rpm, 60 Hz, three-phase.
What are the service intervals for the C2000 D6?
Oil and filter changes are due at 500 hours or 12 months. Air filter replacement at 1,000-hour intervals. Fuel filter at 500 hours. Coolant flush at 6,000 hours. Major overhaul interval is 40,000 hours under standard standby duty conditions.
How does the C2000 D6 compare to the C2250 D6?
Both use the same QSK60 (60L, V-16) engine platform. The C2250 D6 is calibrated for a higher power output from the same displacement, operating closer to the upper limits of the QSK60 power band.
Can OnPoint Generators service the C2000 D6 in Northern California?
Yes. OnPoint Generators provides authorized Cummins service for mega-diesel generators across the San Francisco Bay Area and Northern California. V-16 engines require specialized tooling and attention to bank-to-bank balance. We use Cummins INSITE diagnostics for injector calibration and cylinder contribution analysis on every QSK60 service.

Compatible equipment

Transfer switches

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