Used Kohler 800REOZMB: Reliable 800 kW Backup Power Ready to Ship

When you are looking for a heavy-duty power solution, you aren’t just looking for a machine; you are looking for peace of mind. In the world of industrial backup power, the Kohler 800REOZMB is a heavyweight champion that brings together two of the most respected names in the business: Kohler and Mitsubishi.

At Central States Diesel Generators (CSDG), we understand that when your facility loses power, time is money. That is why we focus on stocking high-quality, low-hour units that are ready to move at a moment’s notice. Currently, we are featuring a standout unit: a Used Kohler 800REOZMB Diesel Generator (CSDG #4926) with only 528 hours on the clock.

This isn’t just another listing on a broker’s site. At CSDG, we only advertise inventory we actually own. If it’s on our site, it’s in our yard, and it’s ready to ship to your facility today.

The Powerhouse Combination: Kohler Engineering Meets Mitsubishi Muscle

One of the first things people notice about the 800REOZMB series is the build quality. Kohler has been a staple in the power generation industry for over a century, known for their advanced controllers and robust alternator designs. But what makes this specific 800 kW model truly special is what’s under the hood: the Mitsubishi S12A2-Y2PTAW-2 engine.

Mitsubishi heavy industrial engines are legendary for their longevity. This is a 12-cylinder, 4-cycle, turbocharged diesel engine designed specifically for high-load applications. Whether you are powering a large manufacturing plant, a regional hospital, or a massive data center, this engine is built to run reliably under pressure.

With only 528 original hours, this unit is essentially “just broken in.” In the world of industrial diesel engines, 500 hours is remarkably low, meaning the internal components are in pristine condition and ready for decades of standby service.

Key Technical Specifications at a Glance:

Model: Kohler 800REOZMB (CSDG Unit #4926)
Rating: 800 kW Standby / 1000 kVA
Engine: Mitsubishi S12A2-Y2PTAW-2
Voltage: 277/480V (Reconnectable)
Emissions: EPA Tier 2 Certified
Hours: 528
Year: High-quality late-model unit
Controller: Decision-Maker 550

Why 800 kW is the “Sweet Spot” for Industrial Backup

Selecting the right size for a commercial diesel generator is critical. If you go too small, you risk system failure during a peak load event. If you go too large, you deal with “wet stacking” issues and unnecessary fuel costs.

The 800 kW mark is a popular choice because it provides enough “headroom” for most medium-to-large facilities. It can easily handle the massive inrush current required to start large motors, HVAC systems, and industrial machinery.

Furthermore, this unit is reconnectable. Currently set at 277/480V, it offers the flexibility to adapt to your specific facility’s electrical architecture. If you are curious about how these systems maintain stability during these high-demand starts, you can read more about generator excitation methods and systems to understand the tech behind the power.

Feature Spotlight: More Than Just an Engine

When you buy a generator from CSDG, you aren’t just getting an engine and an alternator. This Kohler 800REOZMB is a complete power package designed for immediate outdoor installation.

1. The Massive 4000-Gallon Fuel Tank

One of the most impressive features of this specific unit is the integrated 4000-gallon sub-base fuel tank. In an emergency, fuel is everything. A tank of this size ensures that your facility can remain operational for days: not just hours: without needing a refill. For industries like healthcare or data management, this level of autonomy is not just a luxury; it’s a requirement.

2. Weather Enclosure for Maximum Protection

This unit comes housed in a heavy-duty weather enclosure. This protects the core components from rain, snow, and debris, ensuring that when the grid goes down in the middle of a storm, your generator is ready to fire up. It’s a commercial diesel generator in the rain that won’t skip a beat.

3. Decision-Maker 550 Controller

Kohler’s Decision-Maker 550 digital controller is famous for being both advanced and user-friendly. It provides precise voltage regulation (±0.25%) and monitors everything from oil pressure to engine temperature. It makes it easy for your facility manager to run diagnostics and ensure the unit is always in peak operating condition.

Certified Performance: Load Tested and Ready

We don’t expect you to take our word for it when it comes to performance. Every major unit that passes through our yard undergoes rigorous testing.

This Kohler 800REOZMB was fully load tested in January 2026. During a load test, we push the generator to its rated capacity to ensure the engine, cooling system, and alternator all perform exactly as they should under full stress. This unit passed with flying colors, confirming that its 800 kW rating is ready to be put to work the moment it’s wired in.

Being EPA Tier 2 certified, this unit meets the necessary federal requirements for standby power applications. While Tier 4 is often required for “prime” power or mobile applications in certain states, Tier 2 remains the industry standard for emergency standby units in most jurisdictions, offering a perfect balance of performance and cost-effectiveness.

Looking for Something Different? We’ve Got Options.

While this Kohler 800 kW is a star of our current inventory, we know that every project has unique specs. Maybe you need a slightly smaller footprint, or perhaps you are a die-hard fan of a different brand.

At Central States Diesel Generators, we carry a wide variety of brands including Caterpillar, Cummins, and Blue Star. Whether you are looking for a Caterpillar C27 or a versatile CAT C15 generator, we likely have a comparable unit in stock.

If you are looking for something in the 750 kW range, we even have specs on units like the CAT C18 for those who prefer the yellow iron. The point is, we own our inventory, and we have a variety of commercial generators for sale that can be shipped nationwide today.

The CSDG Advantage: Immediate Nationwide Shipping

In the current industrial climate, lead times for new generators can be months: sometimes even over a year. Can your business afford to wait that long for backup power?

Because we own our inventory, we bypass the middleman and the long factory wait times. When you purchase this Kohler 800REOZMB, we can coordinate immediate nationwide shipping. Our team handles the logistics to get this 800 kW powerhouse from our yard to your job site as quickly and safely as possible.

Whether you are upgrading an existing system or outfitting a new facility, this clean commercial diesel generator set is one of the best values on the market today.

Ready to Secure Your Power?

Don’t wait for the next storm or grid failure to realize you need backup power. A commercial generator is an investment in your company’s future and operational continuity.

If you’re interested in the Kohler 800REOZMB or want to see what else we have in the 800 kW to 1000 kW range, here is how you can get started:

View the Full Listing: Check out all the photos and detailed specs for CSDG #4926 here.
Request a Quote: Give us a call or fill out our online form for a landed price including shipping to your location.
Browse Inventory: See our full selection of Caterpillar diesel generators and other top brands.
Talk to an Expert: Not sure if 800 kW is right for you? Contact our team, and we will help you size the right unit for your specific application.