Marine Engines

When you’re working on a commercial boat , you need dependable and reliable marine power. You can’t afford to be down in open waters. It’s expensive and dangerous to the crew. You can count on Depco to provide you with marine engines and transmissions to give you peace of mind. All of our units come with a warranty and quality assured Depco seal.

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.

  • Low Hour Caterpillar 3516C HD 3151HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3516C HD
    RPM: 1800
    Fuel: Diesel
    HP: 3151
    Hours: 2602 Since New
    Depco Item # 18957

  • Good Used Caterpillar 3516 DITA 2200HP Diesel Marine Engine

    Engine Model: 3516 DITA
    RPM: 1800
    Fuel: Diesel
    HP: 2200
    Hours: 7995 Since Rebuilt
    Depco Item # 17698

  • Good Used Caterpillar 3516 DITA 2200HP Diesel Marine Engine

    Engine Model: 3516 DITA
    RPM: 1800
    Fuel: Diesel
    HP: 2200
    Hours: 7663 Since Rebuilt
    Depco Item # 18659

  • Good Used Caterpillar 3516 DITA 2200HP Diesel Marine Engine

    Engine Model: 3516 DITA
    RPM: 1800
    Fuel: Diesel
    HP: 2200
    Hours: 5500 Since Rebuilt
    Depco Item # 17266

  • Good Used Caterpillar 3512B 1675HP Diesel Marine Engine

    Engine Model: 3512B
    RPM: 1600
    Fuel: Diesel
    HP: 1675
    Hours: 7403 Since Rebuilt
    Depco Item # 18275

  • Core Caterpillar 3512 DITA 1509HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3512 DITA
    RPM: 1800
    Fuel: Diesel
    HP: 1509
    Hours:
    Depco Item # 18435

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  • High Hour Runner Caterpillar 3512B DITA SCAC 1500HP Tier 1 Diesel Marine Engine

    Engine Model: 3512B DITA SCAC
    RPM: 1600
    Fuel: Diesel
    HP: 1500
    Hours: 25339 Since New
    Depco Item # 19393

  • Good Used Caterpillar 3512B 1500HP Tier 1 Diesel Marine Engine

    Engine Model: 3512B
    RPM: 1600
    Fuel: Diesel
    HP: 1500
    Hours: 7488 Since New
    Depco Item # 18494

  • High Hour Runner Caterpillar 3512 DITA 1250HP Diesel Marine Engine

    Engine Model: 3512 DITA
    RPM: 1800
    Fuel: Diesel
    HP: 1250
    Hours:
    Depco Item # 19396

  • High Hour Caterpillar 3508B 1050HP Tier 1 Diesel Marine Engine

    Ready to Ship
    Engine Model: 3508B
    RPM: 1600
    Fuel: Diesel
    HP: 1050
    Hours:
    Depco Item # 16735

  • High Hour Runner Caterpillar 3508B 1000HP Diesel Marine Engine

    Engine Model: 3508B
    RPM: 1600
    Fuel: Diesel
    HP: 1000
    Hours: 13634 Since New
    Depco Item # 19397

  • High Hour Runner Caterpillar 3508B 1000HP Diesel Marine Engine

    Engine Model: 3508B
    RPM: 1600
    Fuel: Diesel
    HP: 1000
    Hours: 24315 Since New
    Depco Item # 19398

  • High Hour Caterpillar 3516 DITA 990HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3516 DITA
    RPM: 1200
    Fuel: Diesel
    HP: 990
    Hours: 59081 Since Rebuilt
    Depco Item # 19135

  • High Hour Runner Caterpillar 3508 DITA 855HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3508 DITA
    RPM: 1800
    Fuel: Diesel
    HP: 855
    Hours:
    Depco Item # 16861

  • High Hour Runner Caterpillar 3412C DITTA 825HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3412C DITTA
    RPM: 2100
    Fuel: Diesel
    HP: 825
    Hours: 25000 Since New
    Depco Item # 17322

  • High Hour Runner Caterpillar 3412C DITTA 825HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3412C DITTA
    RPM: 2100
    Fuel: Diesel
    HP: 825
    Hours: 25895 Since New
    Depco Item # 17323

  • High Hour Runner Caterpillar 3412E DITA 720HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3412E DITA
    RPM: 1800
    Fuel: Diesel
    HP: 720
    Hours: 26406 Since New
    Depco Item # 17063

    Price: $22,900
    Sale Price: $17,900 (22% off!)
  • High Hour Runner Caterpillar 3412C DITA 620HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3412C DITA
    RPM: 1800
    Fuel: Diesel
    HP: 620
    Hours:
    Depco Item # 18729

  • Good Used Caterpillar C18 Marine 600HP Diesel Marine Engine

    Engine Model: C18 Marine
    RPM: 1800
    Fuel: Diesel
    HP: 600
    Hours: 16000 Since Rebuilt
    Depco Item # 19640

  • High Hour Runner Cummins KTA19-M3 600HP Diesel Marine Engine

    Engine Model: KTA19-M3
    RPM: 1800
    Fuel: Diesel
    HP: 600
    Hours: 0
    Depco Item # 19645

  • High Hour Runner Cummins KTA19-M3 600HP Diesel Marine Engine

    Engine Model: KTA19-M3
    RPM: 1800
    Fuel: Diesel
    HP: 600
    Hours: 0
    Depco Item # 19647

  • High Hour Runner Caterpillar C18 600HP Tier 1 Diesel Marine Engine

    Engine Model: C18
    RPM: 1800
    Fuel: Diesel
    HP: 600
    Hours:
    Depco Item # 19394

  • Good Used Caterpillar C18 Marine 600HP Diesel Marine Engine

    Engine Model: C18 Marine
    RPM: 1800
    Fuel: Diesel
    HP: 600
    Hours: 16000 Since Rebuilt
    Depco Item # 19639

  • Core Caterpillar 3406C DITA 581HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3406C DITA
    RPM: 2100
    Fuel: Diesel
    HP: 581
    Hours:
    Depco Item # 17887

  • High Hour Runner Caterpillar 3408B 443HP Diesel Marine Engine

    Engine Model: 3408B
    RPM: 1800
    Fuel: Diesel
    HP: 443
    Hours:
    Depco Item # 19401

  • High Hour Runner Caterpillar 3408B 443HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3408B
    RPM: 1800
    Fuel: Diesel
    HP: 443
    Hours:
    Depco Item # 19466

  • New Caterpillar C7.1 425HP Tier 3 Diesel Marine Engine

    Ready to Ship
    Engine Model: C7.1
    RPM: 2700
    Fuel: Diesel
    HP: 425
    Hours: 0
    Depco Item # 19694

  • New Caterpillar C7.1 425HP Tier 3 Diesel Marine Engine

    Ready to Ship
    Engine Model: C7.1
    RPM: 2700
    Fuel: Diesel
    HP: 425
    Hours: 0
    Depco Item # 19695

  • New Caterpillar C7.1 425HP Tier 3 Diesel Marine Engine

    Ready to Ship
    Engine Model: C7.1
    RPM: 2700
    Fuel: Diesel
    HP: 425
    Hours: 0
    Depco Item # 19693

  • High Hour Runner Caterpillar 3408C DITA 402HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3408C DITA
    RPM: 1800
    Fuel: Diesel
    HP: 402
    Hours:
    Depco Item # 17986

  • New Caterpillar C7.1 350HP Tier 3 Diesel Marine Engine

    Ready to Ship
    Engine Model: C7.1
    RPM: 2500
    Fuel: Diesel
    HP: 350
    Hours: 0
    Depco Item # 19664

  • New Caterpillar C7.1 350HP Tier 3 Diesel Marine Engine

    Ready to Ship
    Engine Model: C7.1
    RPM: 2500
    Fuel: Diesel
    HP: 350
    Hours: 0
    Depco Item # 19690

  • New Caterpillar C7.1 350HP Tier 3 Diesel Marine Engine

    Ready to Ship
    Engine Model: C7.1
    RPM: 2500
    Fuel: Diesel
    HP: 350
    Hours: 0
    Depco Item # 19691

  • New Caterpillar C7.1 350HP Tier 3 Diesel Marine Engine

    Ready to Ship
    Engine Model: C7.1
    RPM: 2500
    Fuel: Diesel
    HP: 350
    Hours: 0
    Depco Item # 19692

  • High Hour Runner Caterpillar 3406 DIT 251HP Diesel Marine Engine

    Ready to Ship
    Engine Model: 3406 DIT
    RPM:
    Fuel: Diesel
    HP: 251
    Hours:
    Depco Item # 19463