Used Cummins 6BT5.9-G2 85kW Diesel Generator – American Made, In Stock, Serviced & Tested
This listing is for a used Cummins 6BT5.9-G2 diesel generator set, delivering 85kW (106kVA) of reliable prime power . Powered by the renowned Cummins 6BT5.9-G2 engine – an American-designed and manufactured workhorse – this unit represents the perfect balance of proven reliability, fuel efficiency, and rugged dependability for medium-duty industrial and commercial applications. This generator is currently in stock and available for immediate dispatch from our Guangzhou facility.
American-Made Cummins – Legendary Reliability
The Cummins 6BT5.9-G2 is part of the world-famous B-series engine family, designed and engineered in the USA and trusted across the globe for robust construction, exceptional durability, and ease of maintenance. With proper care, these engines are known to achieve 15,000–20,000+ operating hours before major overhaul . This used unit offers the same proven American engineering at a fraction of the cost of new equipment.
Engine Specifications
The Cummins 6BT5.9-G2 features a proven 6-cylinder in-line diesel engine with:
| Specification | Details |
|---|---|
| Engine Model | Cummins 6BT5.9-G2 |
| Configuration | 6 cylinders in-line, 4-stroke diesel |
| Displacement | 5.9 liters |
| Bore × Stroke | 102 mm × 120 mm |
| Aspiration | Turbocharged & Aftercooled |
| Rated Power @ 1500 rpm | 86 kW (115 HP) |
| Standby Power @ 1500 rpm | 92 kW (123 HP) |
| Rated Power @ 1800 rpm | 100 kW (133 HP) |
| Fuel Consumption @ Rated | 214 g/kW·h |
| Compression Ratio | 17.3:1 |
| Dry Weight (engine only) | 411–450 kg |
| Lubrication Capacity | 16.4 liters |
| Coolant Capacity | 7.9 liters |
Generator Set Specifications
| Specification | Details |
|---|---|
| Model | Cummins 6BT5.9-G2 Diesel Generator |
| Prime Power | 85 kW (106 kVA) continuous |
| Standby Power | Approx. 92 kW (115 kVA) |
| Rated Current | Approx. 153 A @ 400V |
| Frequency | 50 Hz / 60 Hz selectable |
| Voltage | 400V / 230V (3-phase, 4-wire) – other voltages configurable |
| Power Factor | 0.8 (lagging) |
| Alternator | Brushless, with Automatic Voltage Regulator (AVR) – Stamford or equivalent premium brand |
| Voltage Regulation | ±1.0% steady-state |
| Control Panel | Digital/analog instrumentation with protection relays |
| Cooling System | Heavy-duty radiator with belt-driven fan |
| Fuel Tank | Integrated base tank for extended runtime |
| Dimensions (L×W×H) | Approx. 2,150 × 830 × 1,450 mm (open type) |
| Weight | Approx. 1,050–1,200 kg |
Key Features
Cummins Engine Advantages:
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American design & engineering – Developed and refined in the USA with millions of units operating worldwide
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Proven B-series reliability – Legendary durability with many units achieving 20,000+ hours before major overhaul
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Excellent fuel efficiency – 214 g/kW·h fuel consumption at rated output
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Turbocharged performance – Excellent power density and altitude capability
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Quick start-up – Rapid response to load changes
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Easy maintenance – Service points designed for quick access
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Global support – Extensive network of Cummins dealers and parts suppliers worldwide
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Versatile operations – Suitable for prime power or standby applications
Generator Features:
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AVR technology – Stable voltage output protects sensitive electronics
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Protection system – Automatic shutdown on low oil pressure, high coolant temperature, overload
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Heavy-duty construction – Built for continuous industrial use
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Compact footprint – Efficient design for space-conscious installations
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Proven performance – Trusted in industrial applications worldwide
Condition & Testing
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Condition: Used, with cosmetic signs of prior service consistent with working industrial equipment
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Stock Status: In stock – available for immediate dispatch from Guangzhou
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Engine Hours: Please contact for current hour meter reading
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Service History: Oil and filter changed, coolant and fuel levels checked, air filter inspected/replaced
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Load Test: Unit has been load bank tested at 25%, 50%, 75%, and 100% load – operates smoothly with stable voltage and frequency
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Inspection: Available for viewing by appointment in Guangzhou
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Warranty: Basic warranty included (inquire for details)
Why Choose a Pre-Owned American-Made Cummins Generator?
Cummins is one of the world’s most trusted names in diesel engines, with a reputation built over a century of engineering excellence. The B-series engine family has become an industry standard for reliability and durability.
Key advantages include:
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Proven durability – Designed for long service life with proper maintenance
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Global parts availability – Extensive network of Cummins dealers and parts suppliers worldwide
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Excellent fuel efficiency – Low operating costs compared to older engines
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Strong resale value – Cummins equipment maintains value well due to brand reputation
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Versatile applications – Suitable for prime power or standby use in demanding environments
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Cost-effective – Significant savings compared to new equipment while delivering the same robust performance
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Immediate availability – In stock and ready for dispatch from Guangzhou
Typical Applications
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Industrial facilities: Manufacturing plants, factories, processing facilities
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Commercial buildings: Office complexes, shopping centers, hospitals
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Construction sites: Power for heavy equipment and site offices
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Data centers: Backup power for critical operations
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Healthcare: Hospital and clinic emergency backup
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Agriculture: Large farms, irrigation systems
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Telecommunications: Tower and exchange backup power
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Events: Outdoor events and temporary power requirements
What’s Included
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Cummins 6BT5.9-G2 diesel generator unit
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Digital/analog control panel with instrumentation
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Base frame with anti-vibration mounts and integrated fuel tank
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Exhaust silencer and flexible connection
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Operator’s manual and maintenance records (where available)
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Battery set and cables
Options Available (please inquire)
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Sound-attenuated enclosure – Weatherproof, low-noise canopy for noise-sensitive environments
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Trailer mounting – Road-legal trailer for mobility
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Automatic Transfer Switch (ATS) – For automatic backup power
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Remote monitoring – Web-based monitoring and control system
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Extended warranty – Optional coverage beyond standard
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Installation & commissioning – Professional setup services
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Additional fuel tank – For extended runtime requirements
Why Buy from Us?
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Immediate Availability: In stock in Guangzhou – ready for dispatch
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Inspection Welcome: View the unit in person by appointment
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Professionally Serviced: Fully checked and serviced by experienced diesel technicians
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Load Tested: Verified performance at rated output with documentation available
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Competitive Pricing: Significant savings compared to new equipment
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Technical Support: Our team can assist with installation and operation questions
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Shipping: We can arrange delivery worldwide











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