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 $500 to $1,999,900. 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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For Rent (20)

Showing 1 - 25 of 1,663 Generator Listings

1 - 25 of 1,663 listings
1 - 25 of 1,663 listings
Caterpillar XQ230 T4F Generator

2021 Caterpillar XQ230 T4F Generator

Recently Updated
$105,425 USD
110% Spill Containment, Battery Charger, Battery Disconnect Switch, Camlocks, Cat Brand Genset, Customer Value Agreement (CVA) 2-year/2,000-hour Customer Value Agreement (CVA), Emissions...
ConditionUsed
Usage6,262 Hours
Stock NumberRP15282
MLS Number14005948
CategoryGenerator Sets
Last Updated11/8/2026
Location
Oklahoma City, OK, US
Sold By
Warren Power Systems
Caterpillar XQ425 T4F Generator

2019 Caterpillar XQ425 T4F Generator

Price Drop $99,375 USD
110% Spill Containment, Battery Charger, Battery Disconnect Switch, Camlocks, Cat Brand Genset, Customer Value Agreement (CVA) 2-year/2,000-hour Customer Value Agreement (CVA), Emissions...
ConditionUsed
Usage7,822 Hours
Stock NumberRP14973
MLS Number13863314
CategoryGenerator Sets
Last Updated11/8/2026
Location
Tulsa, OK, US
Sold By
Warren Power Systems
Caterpillar XQ200RM Generator

2014 Caterpillar XQ200RM Generator

Recently Updated
$126,000 USD
200 KW STANDBY, CAT C7.1 ENGINE, CAT XQ200 T4I PORTABLE, Control Panel - EMCP 4.2, GENERATOR SET, MULTI- VOLTAGE, NEED A KS VIN INSPCT TO FLEETADD, Online Owner's Manual, TRAILER VIN...
ConditionUsed
Usage364 Hours
Stock NumberYEU0019
MLS Number13973071
CategoryGenerator Sets
Last Updated11/8/2026
Location
Call Foley, MO, US
Sold By
Foley Equipment
Caterpillar XQ200 Generator

2015 Caterpillar XQ200 Generator

Recently Updated
$126,000 USD
200 KW STANDBY, CAT C7.1 ENGINE, CAT XQ200 T4I PORTABLE, Control Panel - EMCP 4.2, GENERATOR SET, MULTI- VOLTAGE, NEED A KS VIN INSPCT TO FLEETADD, Online Owner's Manual, TRAILER VIN...
ConditionUsed
Usage1,192 Hours
Stock NumberYEU0018
MLS Number13973070
CategoryGenerator Sets
Last Updated11/8/2026
Location
Call Foley, KS, US
Sold By
Foley Equipment
Multiquip DCA70SSIU4F Diesel Generator

2023 Multiquip DCA70SSIU4F Diesel Generator

Newly Listed
$69,500 USD
Contact for rental/lease prices
GENERATOR 56KW, DIESEL, TRAILER(FUEL CELL), POWER BALANCER, DCA70SSIU4f, FOB: FLEET MAINTAINED - RECORDS AVAILABLE ON REQUEST, PRICE DOES NOT INCLUDE SALES TAX HOUR METER READING MAY VARY...
ConditionUsed
Usage7,284 Hours
Stock Number4648190
MLS Number14733286
CategoryGenerator Sets
Last Updated11/7/2026
Location
Chehalis, WA, US
Sold By
Tyler Rental Inc.
Multiquip DCA25SSI4F Generator

2023 Multiquip DCA25SSI4F Generator

Newly Listed
$27,500 USD
Contact for rental/lease prices
GENERATOR 20 KW DS MQ DCA25SSI4F W/TRAILER, FOB: FLEET MAINTAINED - RECORDS AVAILABLE ON REQUEST, PRICE DOES NOT INCLUDE SALES TAX HOUR METER READING MAY VARY DUE TO ACTIVE INVENTORY, SOLD...
ConditionUsed
Usage3,607 Hours
Stock Number4620002
MLS Number14733285
CategoryGenerator Sets
Last Updated11/7/2026
Location
Chehalis, WA, US
Sold By
Tyler Rental Inc.
Doosan G70WJD-2A-T3 Generator

2013 Doosan G70WJD-2A-T3 Generator

Newly Listed
$24,500 USD
Contact for rental/lease prices
JOHN DEERE DSL ENGINE, TRAILER MOUNTED, 58 KW FOB: FLEET MAINTAINED - RECORDS AVAILABLE ON REQUEST, PRICE DOES NOT INCLUDE SALES TAX HOUR METER READING MAY VARY DUE TO ACTIVE INVENTORY, SOLD...
ConditionUsed
Usage7,312 Hours
Stock Number4648187
MLS Number14733281
CategoryGenerator Sets
Last Updated11/7/2026
Location
Chehalis, WA, US
Sold By
Tyler Rental Inc.
Allis-Chalmers 25-OYD3G/230AA 25 KW PTO Driven Generator

Allis-Chalmers 25-OYD3G/230AA 25 KW PTO Driven Generator

Newly Listed
At auction Nov. 25
Allis-Chalmers 25-OYD3G/230AA 25 KW PTO Driven Generator, 1 Phase, 540 PTO, 120 240 volt outlets, 104 Amp, on 2-wheel cart with 15" tires, see video for operation, SN: I790448197
ConditionUsed
Stock NumberKL6963
MLS Number14732695
CategoryGenerator Sets
Last Updated11/7/2026
Location
Pomona, KS, US
Listed By
BigIron Auctions
Caterpillar SR4 Generator

1999 Caterpillar SR4 Generator

Newly Listed
$149,500 USD
IN TRANSIT 1999 CATERPILLAR XQ600 GENERATOR SR4B 3412 CAT MOTOR WITH 1,900 HOURS AND A REPORTED 545 KW OUTPUT, HES EQUIPMENT STOCK #11080. THIS SELF-CONTAINED GENERATOR PACKAGE IS HOUSED IN...
ConditionUsed
Usage1,900 Hours
Stock Number11080
MLS Number14730902
CategoryGenerator Sets
Last Updated11/7/2026
Location
Holland, MI, US
Sold By
HES Equipment / A&B Farms
(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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