Kohler · REOZ Series (Diesel Industrial Large)

Kohler 800REOZMD

810 kW standby / 730 kW prime · Diesel · Liquid-cooled

800 kW diesel industrial standby generator powered by Mitsubishi. Large-frame REOZ for data centers, hospitals, and mission-critical facilities.

Standby power
810 kW / 730 kW prime
Voltage options
277/480V, 4160V, 12470V, 13200V, 13800V
Frequency / Phase
60 Hz · 3-phase
Engine
Mitsubishi S12A2-Y2PTAW-2 · 33.93L
EPA / Emissions
Tier 2
Alternator
Kohler
Data CentersHealthcareManufacturingGovernmentCommercial
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Overview#

The Kohler 800REOZMD is an 810-kilowatt standby (730 kW prime) diesel generator powered by a Mitsubishi S12A2-Y2PTAW-2 V12 engine at 1800 RPM. This unit serves large commercial and industrial standby applications including hospitals, data centers, and manufacturing facilities. Medium-voltage options (4160V–13800V) are available.

Our service experience#

OnPoint Generators services Kohler REOZ diesel generators throughout Northern California. Units in this class require specialized service capabilities including large-capacity load bank testing and Mitsubishi engine expertise.

Documents & downloads

Spec sheets & manuals

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

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Estimated runtime

4.6 hours(0.2 days)

Fuel consumption ≈ 43.74 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 Kohler 800REOZMD under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.

Oil & filter
Every 500 hours or 12 months
Coolant change
Every 6000 hours
Air filter
Every 1000 hours
Fuel filter
Every 500 hours
Major overhaul
≈ 20,000 hours
Load bank test
Every 12 months

Frequently Asked Questions

What engine powers the Kohler 800REOZMD?
The 800REOZMD uses a Mitsubishi S12A2-Y2PTAW-2 V12 diesel engine with 33.93L displacement running at 1800 RPM.
What is the standby power rating of the 800REOZMD?
The 800REOZMD is rated at approximately 810 kW standby and 730 kW prime per Kohler published specifications.
Does OnPoint service the Kohler 800REOZMD?
Yes. OnPoint Generators provides maintenance, repair, and load bank testing for Kohler REOZ diesel generators throughout Northern California.

Compatible equipment

Transfer switches

Why we recommend Kohler

Kohler is our primary recommendation for commercial standby power. We sell and service the full Kohler line — RCA residential, RCL light commercial, KG industrial diesel, and REOZ large-frame — and our technicians are factory-trained on every product family.

We are an authorized Kohler dealer with factory-trained technicians. Kohler is the majority of our new generator sales today, spanning residential through large industrial. Our parts inventory is stocked for same-day Kohler service.

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