Industry-leading technology allows Caterpillar to create the most reliable commercial engines for a variety of applications. From tugs and container vessels to yachts and sport fishers, Cat and MaK engines have demonstrated their efficiency countless times. With remarkable reliability and durability, these engines will exceed your expectations for decades.

Showing 25–36 of 82 results

C7.1 High Performance Propulsion Engine

Marine Power Systems

Power Range

298 bkW - 373 bkW (400 bhp - 500 bhp)

Rotation from Flywheel End

Counterclockwise

Speed Range

2900 rpm

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C7.1 Marine Auxiliary Engine (U.S. EPA Tier 3 / IMO II)

Marine Power Systems

Length

1095 mm (43.1 in)

Power Range

208 bkW (280 bhp) @ 2300 rpm

Configuration

In-line 6, 4-stroke-cycle diesel

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C7.1 Marine Propulsion Engine (U.S. EPA Tier 3 / IMO II)

Marine Power Systems

Length

1095 mm (43.1 in)

Height

891 mm (35.1 in)

Minimum Width

798 mm (31.4 in)

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C8.7 High Performance Propulsion Engine

Marine Power Systems

Power Range

478 bkW (641 BHP)

Speed Range

2300 rpm

Stroke

135 mm (5.3 in)

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C9.3 Commercial Propulsion Engine

Marine Power Systems

Power Range

375-476 bhp (280-355 bkW)

Speed Range

1800-2300 rpm

Emissions

EPA Tier 3 Commercial, IMO II, EU IW

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C9.3 Marine Generator Set

Marine Power Systems

Minimum Rating

185R ekW (231 kVA) at 50hz, 224R ekW (280 kVA) at 60hz

Maximum Rating

250R ekW (313 kVA) at 50hz, 300 ekW (375 kVA) at 60hz

Frequency

50 Hertz & 60 Hertz

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C9.3 Marine Generator Set / Auxiliary Engine

Marine Power Systems

Minimum Rating

218 bkW (292 BHP)

Maximum Rating

325 bkW (436 BHP)

Aspiration

TA

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Cat C12.9 High Performance Propulsion Engine

Marine Power Systems

Power Range

850-1000 mhp, 838-985 bhp, 625-735 bkW

Speed Range

2300 rpm

Emissions

EPA Tier 3, IMO II, EU Stage IIIA

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Cat C18 ACERT Propulsion Engine (Tier 3)

Marine Power Systems

Power Range

469-1001 bhp (350-747 bkW)

Speed Range

1800-2300 rpm

Emissions

EPA Tier 3 Commercial, IMO II, EU IW

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Cat C18 ACERT High Performance Propulsion Engine (Tier 3 Recreational)

Marine Power Systems

Power Range

1015-1150 mhp, 1001-1136 bhp, 747-847 bkW

Speed Range

2300 rpm

Emissions

EPA Tier 3, IMO II, EU IW

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Cat C18 ACERT High Performance Propulsion Engine (Tier 3)

Marine Power Systems

Power Range

814-1015 mhp, 803-1001 bhp, 599-747 bkW

Speed Range

2100-2300 rpm

Emissions

EPA Tier 3, IMO II, EU Stage IIIA

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Cat C18 ACERT Propulsion Engine (IMO II)

Marine Power Systems

Power Range

454-715 bhp (339-533 bkW)

Speed Range

1800-2100 rpm

Emissions

IMO II, EU IIIA

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