Generator Ends for Sale

We stock new, used, surplus, and refurbished generator ends for sale from leading manufacturers including Caterpillar, Kato, Marathon, Newage Stamford, and Leroy-Somer. Whether you need a smaller alternator for a commercial application or a large-frame unit, including 900 RPM and 1800 RPM options, our team can help match the right kW, voltage, and phase for your setup. Every unit is inspected and verified through the Depco testing and certification process. For help sourcing the correct generator end, contact us or start a live chat.


Jump to Generator End Buying Guide ↓

All units selected for special pricing include the Depco guarantee and 30-day warranty on used inventory. Units will be fully serviced and tested to factory specifications.Liquidations units are sold as-is. All sales are final. Please read the notes section in the item description for details.

  • Kato Generator End

    New Surplus Caterpillar 3100KW Generator End

    Ready to Ship
    RPM: 1800
    Hours: 0
    Volts: 7967/13800
    Phase: Three Phase
    Depco Item # 19716

  • Caterpillar 3100KW Generator End, a large yellow metal housing with bolted panels, mounted on wooden pallets

    New Surplus Caterpillar 3100KW Generator End

    Ready to Ship
    RPM: 1800
    Hours: 0
    Volts: 7967/13800
    Phase: Three Phase
    Depco Item # 19700

  • Caterpillar 3100KW Generator End, yellow enclosure with round intake at base

    New Surplus Caterpillar 3100KW Generator End

    Ready to Ship
    RPM: 1800
    Hours: 0
    Volts: 7967/13800
    Phase: Three Phase
    Depco Item # 19701

  • Caterpillar 2500KW Generator End, yellow generator housing with a radiator grille on the right and a caution label on the side panel

    New Surplus Caterpillar 2500KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 19614

  • Caterpillar yellow industrial equipment with a large cylindrical housing and a vented end fan, photographed in a warehouse

    New Surplus Caterpillar 2500KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 19615

  • Caterpillar generator set; yellow industrial machine with a large round cooling-fan housing on the side

    New Surplus Caterpillar 2500KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 19612

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  • New Surplus Caterpillar 2250KW Generator End

    New Surplus Caterpillar 2250KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 19636

  • Caterpillar 2250KW Generator End

    New Surplus Caterpillar 2250KW Generator End

    Ready to Ship
    RPM: 1800
    Hours: 0
    Volts: 398/690
    Phase: Three Phase
    Depco Item # 19704

  • Caterpillar 2200KW Generator End

    New Surplus Caterpillar 2200KW Generator End

    Ready to Ship
    RPM: 1500
    Hours: 0
    Volts: 3811/6600
    Phase: Three Phase
    Depco Item # 19878

  • Caterpillar 2000kW Stand By Generator End, yellow enclosure seen from the side with bolted access panels

    Like New Caterpillar 2000KW Generator End

    Ready to Ship
    RPM: 1800
    Hours:
    Volts: 7200/12470
    Phase: Three Phase
    Depco Item # 20180

    Price: $37,900
  • New Surplus Caterpillar 2000KW Generator End

    New Surplus Caterpillar 2000KW Generator End

    Ready to Ship
    RPM: 1500
    Hours:
    Volts: 10500
    Phase: Three Phase
    Depco Item # 19719

  • Caterpillar 2000kW standby generator end; yellow industrial unit shown from the side with a bolted access panel and a large lower exhaust vent

    Like New Caterpillar 2000KW Generator End

    Ready to Ship
    RPM: 1800
    Hours:
    Volts: 7200/12470
    Phase: Three Phase
    Depco Item # 20179

    Price: $37,900
  • Stamford 2000KW Generator End in teal green with a large black front cooling fan and Cummins Power Generation branding on the side

    Low Hour Stamford 2000KW Generator End

    RPM: 1800
    Hours:
    Volts: 7200/12470
    Phase: Three Phase
    Depco Item # 19650

  • Industrial generator set in teal-green enclosure with a large upper access panel and vented lower section, covered with DANGER warning labels

    Like New Stamford 2000KW Generator End

    RPM: 1800
    Hours: 1318 Since New
    Volts: 7200/12470
    Phase: Three Phase
    Depco Item # 20426

  • Caterpillar 3100KW Generator End

    New Surplus Caterpillar 2000KW Generator End

    Ready to Ship
    RPM: 1500
    Hours: 0
    Volts: 3811/6600
    Phase: Three Phase
    Depco Item # 19697

  • Caterpillar 1825KW Generator End

    New Surplus Caterpillar 2000KW Generator End

    Ready to Ship
    RPM: 1500
    Hours: 0
    Volts: 3811/6600
    Phase: Three Phase
    Depco Item # 19880

  • Yellow industrial blower with a rectangular enclosure on a wheeled base; visible warning labels and a large curved intake outlet duct at the front

    Like New Caterpillar 2000KW Generator End

    RPM: 1800
    Hours: 1007 Since New
    Volts: 7200/12470
    Phase: Three Phase
    Depco Item # 19546

    Price: $37,900
  • Caterpillar 2000KW Generator End

    New Surplus Caterpillar 1530KW Generator End

    Ready to Ship
    RPM: 1200
    Hours: 0
    Volts: 398/690
    Phase: Three Phase
    Depco Item # 19705

  • Industrial generator set in yellow with bolted access panels and radiator grille, shown in a workshop

    New Surplus ABB 1505KW Generator End

    Ready to Ship
    RPM: 1200
    Hours:
    Volts: 398/690
    Phase: Three Phase
    Depco Item # 19696

  • CAT diesel generator set with yellow enclosure and side access panel bearing Thompson CAT label

    Good Used Caterpillar 1410KW Generator End

    RPM: 1800
    Hours: 7061 Since New
    Volts: 2400/4160
    Phase: Three Phase
    Depco Item # 18963

  • CAT diesel generator set with yellow enclosure and side access panel bearing Thompson CAT label

    Good Used Caterpillar 1410KW Generator End

    RPM: 1800
    Hours: 7318 Since New
    Volts: 2400/4160
    Phase: Three Phase
    Depco Item # 18964

  • Generator Ends for Sale New Used

    New Surplus Caterpillar 1330KW Generator End

    Ready to Ship
    RPM: 1500
    Hours: 0
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 19877

  • New Surplus Caterpillar 1330KW Generator End

    New Surplus Caterpillar 1330KW Generator End

    Ready to Ship
    RPM: 1500
    Hours: 0
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 19702

  • Yellow industrial road roller with large front drum and DANGER FLAMMABLE sticker

    Good Used Kato 1300KW Generator End

    RPM: 1800
    Hours: 8700 Since New
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 19594

  • Yellow industrial road roller with large front drum and DANGER FLAMMABLE sticker

    Good Used Kato 1300KW Generator End

    RPM: 1800
    Hours: 8700 Since New
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 19595

  • Good Used Caterpillar 1300 KW Generator End

    Good Used Caterpillar 1300KW Generator End

    Ready to Ship
    RPM: 1200
    Hours: 0
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 19703

  • Large yellow horizontal cylindrical industrial unit with end mesh guards, mounted on a black steel base

    New Surplus Kato 1050KW Generator End

    RPM: 1200
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 17320

  • Evans electric motor, yellow cylindrical unit with vented end and a green Evans on the side

    Good Used Kato 1050KW Generator End

    RPM: 1200
    Hours:
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 17576

  • Yellow industrial generator on a wooden pallet, strapped with white cord straps

    Rebuilt Kato 1050KW Generator End

    RPM: 1200
    Hours: 0
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 20284

  • Good Used Caterpillar 760KW Generator End

    Good Used Caterpillar 760KW Generator End

    RPM: 1500
    Hours:
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 20442

  • New Caterpillar 725KW Generator End

    New Caterpillar 725KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 19863

  • New Surplus Caterpillar 650KW Generator End with CAT control cabinet; yellow cylindrical generator mounted on a wooden pallet

    New Surplus Caterpillar 650KW Generator End

    RPM: 1200
    Hours: 0
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 19267

  • New Surplus Caterpillar 650KW Generator End; yellow CAT unit with a cylindrical generator housing, shown from the side

    New Surplus Caterpillar 650KW Generator End

    RPM: 1200
    Hours: 0
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 19268

  • Industrial electric motor, yellow with a rectangular top control box and vented end caps

    New Caterpillar 650KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 346/600
    Phase: Three Phase
    Depco Item # 20039

  • Yellow diesel generator set with a large cylindrical housing, side access panel, and vented top edge

    New Leroy Somer 600KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 20041

  • An industrial electric motor with a gearbox enclosure, bright yellow, mounted on a wooden pallet

    New Caterpillar 565KW Generator End

    RPM: 1800
    Hours:
    Volts: 398/690
    Phase: Three Phase
    Depco Item # 19316

  • An industrial electric motor with a gearbox enclosure, bright yellow, mounted on a wooden pallet

    New Caterpillar 565KW Generator End

    RPM: 1800
    Hours:
    Volts: 398/690
    Phase: Three Phase
    Depco Item # 19317

  • An industrial electric motor with a gearbox enclosure, bright yellow, mounted on a wooden pallet

    New Caterpillar 565KW Generator End

    RPM: 1800
    Hours:
    Volts: 398/690
    Phase: Three Phase
    Depco Item # 19319

  • Cummins Power Generation generator enclosure, a large green rectangular unit with two front access doors and a black base

    Low Hour Caterpillar 550KW Generator End

    RPM: 1800
    Hours: 360 Since New
    Volts: 120/208
    Phase: Three Phase
    Depco Item # 16607

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    Used Caterpillar 410KW Generator End

    RPM: 1800
    Hours: 41990 Since New
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 20606

  • Placeholder

    Used Caterpillar 410KW Generator End

    RPM: 1800
    Hours: 36218 Since New
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 20607

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    Used Caterpillar 410KW Generator End

    RPM: 1800
    Hours:
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 20608

  • Yellow industrial electric motor with side air vent and rounded end

    New Caterpillar 350KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 20047

  • Secondary containment generator base tank, UL Listed, with a worn metal identification plate

    New Caterpillar 350KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 20042

  • Industrial yellow electric motor with vented end and attached rectangular control housing

    New Caterpillar 350KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 20043

  • Caterpillar 170KW Generator End, yellow enclosure with CAT and a small white control module mounted on the side

    Good Used Caterpillar 170KW Generator End

    RPM: 1800
    Hours: 16832 Since New
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 17656

  • Caterpillar 170KW Generator End, yellow enclosure with CAT and a small white control module mounted on the side

    Good Used Caterpillar 170KW Generator End

    RPM: 1800
    Hours: 16198 Since New
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 17658

  • Caterpillar 170KW Generator End, yellow enclosure with CAT and a small white control module mounted on the side

    Good Used Caterpillar 170KW Generator End

    RPM: 1800
    Hours: 23584 Since New
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 17659

  • Caterpillar 40KW Generator End, yellow housing, with a bundle of labeled black wires and exposed terminal studs

    New Surplus Caterpillar 40KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 19058

  • Caterpillar 40KW generator end in yellow housing with a tangle of cables connected to a black terminal block featuring multiple stud terminals

    New Surplus Caterpillar 40KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 19055

  • Caterpillar 40KW Generator End, yellow housing, with a bundle of labeled black wires and exposed terminal studs

    New Surplus Caterpillar 40KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 19056

  • Caterpillar 40KW Generator End, yellow housing, with a bundle of labeled black wires and exposed terminal studs

    New Surplus Caterpillar 40KW Generator End

    RPM: 1800
    Hours: 0
    Volts: 277/480
    Phase: Three Phase
    Depco Item # 19057

Industrial Generator Ends & Alternators

Generator ends (also called alternators) convert mechanical power into electrical output and are commonly paired with industrial engines and generator sets.

Depco stocks new, used, surplus, and refurbished generator ends across a wide output range, including common sizes like: 150 kW, 175 kW, 200 kW, 300 kW, 500 kW, 600 kW, 800 kW, 900 kW, 1000 kW, 1200 kW, 1500 kW, 2000 kW, 2500 kW, 3000 kW, and larger units.

Generator End Brands: Cat, Kato, Marathon, Stamford & More

We regularly stock generator ends from major OEMs including Caterpillar generator ends, Kato generator ends, Marathon, Stamford, Leroy-Somer, Newage, and others. If you’re searching for specific configurations (for example, a 900 kW Marathon alternator or a 2000 kW Stamford generator end), contact our team and we’ll confirm availability and output requirements.

How to Choose the Right Generator End

To select the right unit, start with:

• Required output (kW / kVA) and electrical load profile
• Operating speed (900 RPM, 1200 RPM, 1800 RPM)
• Output voltage (e.g. 277/480, 346/600, 7200/12470) and phase (single vs three phase)
• Enclosure/mounting requirements and end-use environment

If you’re replacing an existing alternator, we can help cross-reference your current unit and confirm compatibility before you buy.

Generator End FAQs

Have questions about generator ends? Below are answers to some of the most common questions we receive about generator ends, alternators, sizing, brands, and availability. If you don’t see your specific configuration listed, our team can help you source the right unit from current inventory.

What is a generator end?

A generator end (alternator) is the component that produces electrical output when driven by an engine. It’s selected based on kW/kVA, RPM, voltage, and phase requirements.

Do you sell refurbished generator ends?

Yes, Depco stocks new, used, surplus, and refurbished generator ends. Availability changes often, so contact us with your required kW, voltage, and RPM.

What is the 4000-kW generator price?

Pricing for 4000 kW generator ends varies widely by brand, condition (new/used/surplus), and electrical configuration. Share your required voltage, phase, and RPM, and we’ll quote the closest match available.

Do you carry Kato generator ends?

Yes, Depco inventory of generator ends often include Kato. Send your target kW, RPM, and voltage/phase requirements so we can confirm fit and availability.

Do you have 900 kW Marathon generator ends / alternators?

We often stock Marathon units in common sizes including 900 kW. For the fastest match, provide your operating speed (RPM), voltage, and phase.