Generator Sets For Sale

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

Explore new and used Generator Sets on MyLittleSalesman.com, with prices from $130 to $1,349,900. Use filters for hours, price, or year to narrow by what matters.
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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Showing 1 - 25 of 1,935 Generator Listings

1 - 25 of 1,935 listings
1 - 25 of 1,935 listings
Featured Item
2001 Caterpillar 3412PKGG 700KW 480V Generator

2001 Caterpillar 3412PKGG 700KW 480V Generator

$66,000 USD
700Kw standby rated, 635kW prime rated generator set. Generator comes with Sound Attenuated Enclosure and Ground Fault Relay System. 3412 Cat Engine with Regular System Changes every 500 Hrs...
ConditionUsed
Usage9,256 Hours
Engine ModelCaterpillar 3412
MLS Number14146681
CategoryGenerator Sets
Last Updated2/16/2026
Location
Grants Pass, OR, US
Sold By
Private Party
Featured Item
2023 GENERAC G-25 TRAILER MOUNTED 25KW GENERATOR - ISUZU DIESEL - ONLY 3,000 HOURS - LIKE NEW

2023 GENERAC G-25 TRAILER MOUNTED 25KW GENERATOR - ISUZU DIESEL - ONLY 3,000 HOURS - LIKE NEW

$13,500 USD
PRO-QUIPLLC.COM CALL 954-367-3867 2023 GENERAC MDG25IF4 25KW TRAILER MOUNTED GENERATOR 3 PHASE ISUZU TURBO DIESEL ONLY 3,034 HOURS STILL LIKE NEW 100% RUST FREE AND IMMACULATE FRESH...
ConditionUsed
Usage3,034 Hours
Horse Power49 HP
Engine ModelIsuzu 2.2
Weight2771
Stock Number25 KW - ISUZU TURBO DIESEL - 3 PHASE
MLS Number14021856
CategoryGenerator Sets
Last Updated2/25/2026
Location
Pompano Beach, FL, US
Sold By
Pro Quip
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 Updated2/9/2026
Location
West Columbia, SC, US
Sold By
Blanchard 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

$110,000 USD
110% SPILL CONTAINMENT, 3 WAY FUEL VALVE, 60 HZ, AUTO START, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, CAT BRAND GENSET, CAT C13 ENGINE, CATERPILLAR XA350 TIER4I, CIRCUIT BREAKER, CEM,...
Inspection Report
ConditionUsed
Usage6,727 Hours
Stock NumberNR12802
MLS Number13305187
CategoryGenerator Sets
Last Updated2/9/2026
Location
Eugene, OR, US
Sold By
Peterson 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 Updated2/9/2026
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 Updated2/9/2026
Location
Miami, FL, US
Sold By
Pantropic Power
Caterpillar 3456 Generator

2006 Caterpillar 3456 Generator

Price Drop $85,000 USD
8 Hour Integral Fuel Tank, Auto Start, Base Tank, Base Type - Skid, Battery Charger, Battery Set - Standard, Cat Brand Genset, Circuit Breaker - 3 Pole, Control Panel - Other, Enclosure...
Inspection Report
ConditionUsed
Usage265 Hours
Stock NumberUE01441
MLS Number13823149
CategoryGenerator Sets
Last Updated2/26/2026
Location
Eugene, OR, US
Sold By
Peterson Power Systems
Caterpillar XQ60 Generator

2010 Caterpillar XQ60 Generator

Recently Updated
$10,725 USD
ACCESSORIES POWER SUPPLY VOLTS, ADD RACOR FUEL FILTER (EFR1), ANTI-CONDENSATION HEATER, BASEFRAME TYPE, Battery Charger, BATTERY CHARGER TYPE, BATTERY TYPE, CANOPY TYPE. CONFIGURATION,...
ConditionUsed
Usage14,137 Hours
Stock NumberEQ00033471
MLS Number13755895
CategoryGenerator Sets
Last Updated2/26/2026
Location
Lexington, KY, US
Sold By
Boyd CAT
Caterpillar XQ425KVA Generator

2024 Caterpillar XQ425KVA Generator

Recently Updated
$227,900 USD
(109 degF), 500M (1640, (kW and kVAr), and, (ModbusTCP) and, (Prime), *518BHP 340 GEN KW W/F 60 HZ PR, *CAPTIVE: 5194400C13PS118, *CERTIFICATION AR, *ELECTRIC DRIVE TRAILER, *END USE: EP...
ConditionUsed
Usage946 Hours
Stock NumberUEN236
MLS Number12801066
CategoryGenerator Sets
Last Updated2/26/2026
Location
Topeka, KS, US
Sold By
Foley Equipment
Cummins Power Generation GGMB-1408154 Generator

Cummins Power Generation GGMB-1408154 Generator

Newly Listed
At auction Mar. 25
Cummins Power Generation GGMB-1408154 generator, Hours: 369 on meter, Serial: G140706699, Engine, Cummins, Displacement: 3.0L, Cylinders: 4, Fuel type: LPG, Natural gas, LP bottle: Not...
ConditionUsed
Usage369 Hours
Stock NumberET1344
MLS Number14163743
CategoryGenerator Sets
Last Updated2/26/2026
Location
Kingfisher, OK, US
Listed By
Purple Wave Auction
Cummins Power Generation GGMB-1408156 Generator

Cummins Power Generation GGMB-1408156 Generator

Newly Listed
At auction Mar. 25
Cummins Power Generation GGMB-1408156 generator, Hours: 396 on meter, Serial: G140705842, Engine, Cummins, Serial: G140705842, Displacement: 3.0L, Cylinders: 4, Fuel type: LPG, Natural gas...
ConditionUsed
Usage396 Hours
Stock NumberET1339
MLS Number14163742
CategoryGenerator Sets
Last Updated2/26/2026
Location
Kingfisher, OK, US
Listed By
Purple Wave Auction
Cummins Power Generation GGMB-1219067 Generator

Cummins Power Generation GGMB-1219067 Generator

Newly Listed
At auction Mar. 25
Cummins Power Generation GGMB-1219067 generator, Hours: 870 on meter, Serial: A130440316, Engine, Cummins, Displacement: 3.0L, Cylinders: 4, Fuel type: LPG, Natural gas, LP bottle: Not...
ConditionUsed
Usage870 Hours
Stock NumberET1340
MLS Number14163741
CategoryGenerator Sets
Last Updated2/26/2026
Location
Kingfisher, OK, US
Listed By
Purple Wave Auction
Cummins Power Generation C25 N6 Generator

Cummins Power Generation C25 N6 Generator

Newly Listed
At auction Mar. 25
Cummins Power Generation C25 N6 generator, Hours: 528 on meter, Serial: A150783855, Engine, Cummins, Displacement: 2.4L, Cylinders: 4, Fuel type: LPG, Natural gas, LP bottle: Not included,...
ConditionUsed
Usage528 Hours
Stock NumberET1335
MLS Number14163739
CategoryGenerator Sets
Last Updated2/26/2026
Location
Kingfisher, OK, US
Listed By
Purple Wave Auction
Cummins Power Generation C25 D6 Generator

Cummins Power Generation C25 D6 Generator

Newly Listed
At auction Mar. 25
Cummins Power Generation C25 D6 generator, Hours: 275 on meter, Serial: A150783609, Engine, Cummins 4BT3.3G5, Displacement: 3.26L, Cylinders: 4, Fuel type: Diesel, Features, Generator,...
ConditionUsed
Usage275 Hours
Stock NumberET1336
MLS Number14163732
CategoryGenerator Sets
Last Updated2/26/2026
Location
Kingfisher, OK, US
Listed By
Purple Wave Auction

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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