Generator Sets For Sale

New or Used Generators (Gen Set) by Owners and Dealers

Shop new and used Generator Sets on MyLittleSalesman.com, with prices from $500 to $1,999,900. Apply filters for hours, price, or year to focus your search.
Generator sets, also known as a "gen set", can provide power to any job site that is not connected to grid, needs an emergency supply, or wants to perform peak shaving. The generators come in various sizes and power ratings. The fuel type of the generator may be diesel, gasoline, or natural gas, and they may be trailer-mounted, mobile, or stationary. If you're looking for just a power unit, browse our industrial power unit section.
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For Rent (17)

Showing 1 - 25 of 1,671 Generator Listings

1 - 25 of 1,671 listings
1 - 25 of 1,671 listings
Featured Item
Caterpillar D40-2LC Generator

2023 Caterpillar D40-2LC Generator

$26,500 USD
8 Hour Integral Fuel Tank - Dual Wall, Base Tank, Base Type - Skid, Battery Set, Cat Brand Genset, Circuit Breaker, Emissions Level, Engine Type - Diesel, EPA Stationary Emergency, Frequency...
ConditionUsed
Usage3 Hours
Stock NumberCE38208
MLS Number14456545
CategoryGenerator Sets
Last Updated10/5/2026
Location
Midland, TX, US
Sold By
Warren Power Systems
Featured Item
Caterpillar XQ 350 (120-480 V) 350@1800/3/SBY EKW@RPM/PH/R Generator

2014 Caterpillar XQ 350 (120-480 V) 350@1800/3/SBY EKW@RPM/PH/R Generator

$65,000 USD
60 HZ, CAT C13 ENGINE, CATERPILLAR XA350 TIER4I, CIRCUIT BREAKER, CEM, CONTINUOUS, DIESEL, DUAL WALL FUEL TANK, EMCP4.2 CONTROL PANEL AND, EPA Label, FUEL TANK, FUEL VALVE, GENERATORS,...
Inspection Report
ConditionUsed
Usage12,788 Hours
Stock NumberNR12803
MLS Number14475880
CategoryGenerator Sets
Last Updated10/5/2026
Location
San Leandro, CA, US
Sold By
Peterson Power Systems
Featured Item
Caterpillar 3516B Generator

1997 Caterpillar 3516B Generator

$849,900 USD
110% Spill Containment, Auto Start, Battery Charger, Battery Disconnect Switch, Cat Brand Genset, Coolant Heater, Engine Governor, Engine Type - Diesel, Fire Extinguisher, Frequency - 60 Hz,...
ConditionUsed
Stock NumberEU00185
MLS Number14258920
CategoryGenerator Sets
Last Updated10/5/2026
Location
Knoxville, TN, US
Sold By
Stowers Power Systems
Featured Item
Multiquip DCA150 Generator

2014 Multiquip DCA150 Generator

$45,000 USD
110% Spill Containment, Auto Start, Battery Charger, Battery Disconnect Switch, Camlocks, Emissions Level, Engine Type - Diesel, Frequency - 60 Hz, Fuel Tank Type - Dual Wall, Generator,...
ConditionUsed
Usage5,147 Hours
Stock NumberE16389
MLS Number13725278
CategoryGenerator Sets
Last Updated10/5/2026
Location
West Columbia, SC, US
Sold By
Blanchard Power Systems
Featured Item
Caterpillar XQ2000 Mobile Power Module Generator Set

2023 Caterpillar XQ2000 Mobile Power Module Generator Set

$1,200,000 USD
3 Way Fuel Valve, Auto Start, Battery Charger, Camlocks, CE Plate, Emissions Level, Engine Governor, Engine Type - Diesel, Fire Extinguisher, Frequency - 50 / 60 Hz, Fuel Tank Type - Dual...
Inspection Report
ConditionUsed
MLS Number12860680
CategoryGenerator Sets
Last Updated10/5/2026
Location
Fort Myers, FL, US
Sold By
Pantropic Power
Featured Item
Caterpillar XQ 2000 (277-480 V) 2000@1800/3/SBY EKW@RPM/PH/R Generator

Caterpillar XQ 2000 (277-480 V) 2000@1800/3/SBY EKW@RPM/PH/R Generator

$899,000 USD
60 HZ, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, BRAND NEW CONTAINER, NEW 1250GLS FUEL TANK, NEW HORIZONTAL RADIATOR, NEW EXHAUST SYSTEM, GENSET CONTROL PANEL EMCP 4.4 WITH MULTIFUNCTION...
ConditionUsed
Usage1,000 Hours
MLS Number11819023
CategoryGenerator Sets
Last Updated10/5/2026
Location
Miami, FL, US
Sold By
Pantropic Power
(Used) 2010 Whisperwatt Generator- Model: DCA-70SSIU, Phase 3 Rated Output:

2011 (Used) 2010 Whisperwatt Generator- Model: DCA-70SSIU, Phase 3 Rated Output:

Newly Listed
$7,500 USD
(Used) 2010 WHISPERWATT GENERATOR- Model: DCA-70SSIU, Phase 3 Rated Output: 70kVA (56kW) Single Rated Output: 40kW(40kVA) Engine: Isuzu FF-4BG1T, HP: 87, Displacement: 4.3L, Serial Number:...
ConditionUsed
Engine ModelIsuzu Other
Fits To Make(s)Hino
Fits To Model(s)268
Will Fit Year(s)2011
Stock NumberP-28119
MLS Number14729238
CategoryGenerator Sets
Last Updated11/6/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
Onan 7.5kW Generator,  Model Number: 7.5DKDFJ Serial Number: B953330509 Spec:

1999 Onan 7.5kW Generator, Model Number: 7.5DKDFJ Serial Number: B953330509 Spec:

Newly Listed
$2,799.99 USD
Onan 7.5kW Generator, Model Number: 7.5DKDFJ Serial Number: B953330509 Spec: 27798D Battery Type: 12V KW: 7.5 KVA: 7.5 HZ: 60 Voltage: 120/240 Amperage: 62.5/31.25 Options: Z510 Hours: 325...
ConditionUsed
Engine ModelKDI2504M
Will Fit Year(s)1999
Part Number27798D
Stock NumberP-10248
MLS Number14729215
CategoryGenerator Sets
Last Updated11/6/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(Used) Onan 10.0 Genset 1069 Hours Kubota V1305-E Engine Disp 1335CC Serial

2001 (Used) Onan 10.0 Genset 1069 Hours Kubota V1305-E Engine Disp 1335CC Serial

Newly Listed
$1,499 USD
(Used) ONAN 10.0 GENSET 1069 HOURS KUBOTA V1305-E ENGINE DISP 1335CC SERIAL XQ5818 FAMILY SKB1.5U6D2RA CODE 1G281-00000 For more information about this item, give us a call. We ship...
ConditionUsed
Fits To Make(s)American La France
Fits To Model(s)American LaFrance Condor
Will Fit Year(s)2001
Part NumberV1305E
Stock NumberP-7665
MLS Number14729210
CategoryGenerator Sets
Last Updated11/6/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts

The Marketplace for Buying and Selling Industrial Generators

A generator set, aka a "gen set", can provide power to any job site that is not connected to grid or otherwise needs an emergency supply. In addition, a gen set can save money by producing power during peak hours when energy costs the most (a practice known as “peak shaving”). We are pleased to offer a huge listing of gas, natural gas, and diesel generator sets for all of your power supply needs.

Choosing the Right Gen Set

A gen set can be split into three main types:

  • Diesel Generator Sets – A diesel genset has better fuel efficiency than a gas gen set, but usually cost more. Earlier models are much noisier than modern versions.
  • Gasoline Generator Sets – Although less expensive than diesel, their components are actually more expensive to replace. More popular than diesel when it comes to intermittent use.
  • Natural Gas – The most expensive gen set to operate is also potentially explosive, so caution must be taken at all times. However, since many buildings have a natural gas line, you usually won’t need to store fuel.

Whether you choose a natural gas, gasoline, or diesel genset, you will need to decide on the best cooling system. Again, there are three types:

  • Air-cooled – The loudest and cheapest cooling system with low maintenance costs (typically received for smaller generator sets).
    Typically used for power levels ranging from 8 to 20 kilowatts.
  • Water-cooled – Larger generator sets require liquid cooling, which is quieter than air, but also more complex and oftentimes messier.
    Typically used for power levels ranging from 25 to 60 kilowatts.
  • Hydrogen – The most powerful gen set is also the most dangerous; hydrogen is highly combustible and most be closely monitored.
    Typically used for power levels above 60 kilowatts.
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