Marine Boat

Products

Commercial Propulsion Engines

The success of every commercial vessel depends on efficient and dependable marine diesel engines, and is critical for you, your crew, your clients and your bottom line. Industry-leading technology allows Caterpillar to create the most reliable commercial engines for a variety of applications.
Commercial Propulsion Engines
3512C IMO II

The Cat 3512C marine propulsion engine makes your investment work harder. Through a wide range of available power ratings (including High Displacement ratings),...

Bore
170.0mm
Stroke
190.0mm
Displacement
51.8l
Commercial Propulsion Engines
3512C Tier 3

The 3512C High Displacement marine engines are now available in a wide range of ratings that meet EPA Marine Tier 3 and IMO...

Bore
170.0mm
Stroke
215.0mm
Displacement
58.6l
Commercial Propulsion Engines
3512E Tier 4 / IMO III

The 3512E marine propulsion engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO...

Bore
170.0mm
Stroke
215.0mm
Displacement
58.6l
Commercial Propulsion Engines
3516C IMO II

The 3516C propulsion engine is available with a wide range of ratings that meet IMO II regulations without any additional aftertreatment. These...

Bore
215.0mm
Stroke
170.0mm
Displacement
78l
Commercial Propulsion Engines
3516C Tier 3

The 3516C propulsion engine is available with a wide range of ratings that meet EPA Tier 3 and IMO II regulations without any...

Bore
170.0mm
Stroke
215.0mm
Displacement
78.0l
Commercial Propulsion Engines
3516E Tier 4 / IMO III

The 3516E marine propulsion engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO...

Bore
170.0mm
Stroke
215.0mm
Displacement
78.0l
Commercial Propulsion Engines
C12

Cat® C12 Diesel Marine Propulsion Engines, with ratings of 340-490 bhp (254-366 bkW) at 1800-2300 rpm, meet IMO II emission standards with...

Bore
130.0mm
Stroke
150.0mm
Displacement
12.0l
Commercial Propulsion Engines
C18 ACERT IMO II

The C18 ACERT marine propulsion engine has commercial application ratings of 454-715 bhp that meet IMO II & EU Stage IIA emissions regulations,...

Bore
145.0mm
Stroke
183.0mm
Displacement
18.1l
Commercial Propulsion Engines
C18 ACERT Tier 3

The C18 ACERT marine propulsion engine has commercial application ratings of 475-725 mhp (469-715 bhp) at 1800-2100 rpm that meet U.S. EPA Tier...

Bore
145.0mm
Stroke
183.0mm
Displacement
18.1l
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