Used Kohler 400 kW Diesel Generator – 400REOZJB, Tier 3, John Deere Engine, Load Tested 2025

🏭 Manufacturer

Kohler Power Systems
Kohler is a trusted name in backup power systems, offering high-performance diesel generators for commercial, industrial, and institutional use with reliable engine technology and control platforms.

📝 Description

This used Kohler 400REOZJB diesel generator set, serial number SGM32CWK4, delivers 400 kW standby and 365 kW prime power. It is powered by a John Deere 6135HFG84A engine (SN: RG6135L030110), producing 617 HP at 1800 RPM, and is compliant with EPA Tier 3 emissions standards.

This unit features a 12-lead reconnectable alternator for flexible voltage configuration, including 277/480V, and a PMG (Permanent Magnet Generator) for stable voltage output. Control is managed via the Kohler Decision-Maker 550 digital control panel, and protection is provided through a 600 Amp main-line circuit breaker.

The generator is housed in a sound-attenuated enclosure and mounted on a 774-gallon UL-listed sub-base fuel tank with secondary containment. With 190 total operating hours, it has been load tested on May 16, 2025, confirming its operational reliability. Built in 2015, this unit is ideal for mid-sized facilities requiring dependable standby power.

⚙️ Specifications

• Model: 400REOZJB

• Serial Number: SGM32CWK4

• Year: 2015

• Hours: 190

• Standby Rating: 400 kW

• Prime Rating: 365 kW

• Engine: John Deere 6135HFG84A

• Engine Power: 617 HP @ 1800 RPM

• Emissions Compliance: EPA Tier 3

• Voltage: 277/480V, 3-phase, 60 Hz

• Voltage Configuration: 12-lead reconnectable to other voltages

• Generator Type: PMG (Permanent Magnet Generator)

• Circuit Breaker: 600 Amp main-line

• Control Panel: Kohler Decision-Maker 550

• Battery Charger: Included

• Coolant Heater: Included

• Fuel Tank:

  • Capacity: 774 gallons

  • UL listed

  • Sub-base with secondary containment

• Enclosure: Sound attenuated

• Certification: UL2200 listed stationary engine-generator assembly

• Load Test: Passed 5/16/2025

• Dimensions: 58" W × 232" L × 127" H (on 6H blocks)

• Weight: 14,250 lbs

🧩 Applications

Ideal for:

• Office buildings and commercial facilities

• Water and wastewater treatment plants

• Medical centers and outpatient clinics

• Schools, universities, and campuses

• Retail and grocery distribution centers

• Telecom shelters and base stations

• Manufacturing operations and warehouses

• Utility and municipal infrastructure

• Cold storage and food processing

• Emergency response and disaster shelters

🔧 What Might This Be Used For?

• Providing reliable standby power in regulated environments

• Delivering voltage stability with PMG alternator design

• Offering versatile voltage setups through 12-lead reconnectability

• Serving remote or mid-sized facilities with sub-base fuel autonomy

• Reducing noise pollution via sound-attenuated enclosure

• Meeting Tier 3 compliance for areas with moderate emissions requirements

• Backup for critical applications with <200 hours of runtime

• Ensuring site-readiness with recent load testing certification

• Supporting building code and insurance compliance (UL2200)

• Power continuity in areas with unstable grid or weather threats

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