Commercial Propulsion Engines
Overview
Engine uptime 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. From tugs and container vessels to sport fishers, Cat marine engines have demonstrated their efficiency throughout the years. With remarkable reliability and durability, these engines will exceed your expectations for decades to come.
Docs & Links
Product
| C7.1 Tier 3 / IMO II | 43.1 in | 35.1 in | 31.4 in |
| C12 | 340-490 bhp (254-366 bkW) | 1800-2300 rpm | IMO I, IMO II |
| C18 ACERT IMO II | 454-715 bhp (339-533 bkW) | 1800-2100 rpm | IMO II, EU IIIA |
| C18 ACERT Tier 3 | 469-1001 bhp (350-747 bkW) | 1800-2300 rpm | EPA Tier 3 Commercial, IMO II, EU IW |
| C32 ACERT IMO II | 660-1450 bhp (492-1081 bkW) | 1600-2300 rpm | IMO II, EU IW |
| C32 ACERT Tier 3 | 750-1800 bhp (559-1342 bkW) | 1600-2300 rpm | EPA Tier 3, IMO II, EU IW |
| C32 Tier 3 / IMO II | 61-1450 bhp (46-1072 bkW) | U.S. EPA Tier 3 / IMO II emissions certified | Turbocharged-aftercooled aspiration |
| C32 Tier 4 / IMO III | 147.7 in | 83.9 in | 23.5 in |
| 3508C | 775-1100 bhp (578-820 bkW) | 1200-1600 rpm | IMO II, EU IW |
| 3512C IMO II | 1280-2551 bhp (955-1902 bkW) | 1200 rpm, 1600 rpm, 1800 rpm | IMO II, EU IW |
| 3512C Tier 3 | 1340-2366 bhp (1000-1765 bkW) | 1600-1800 rpm | EPA Tier 3, IMO II |
| 3512E Tier 4 / IMO III | 1341-2549 bhp (1000-1901 bkW) | 1600-1800 rpm | U.S. EPA Tier 4 Final, IMO III |
| 3516C IMO II | 1650-3386 bhp (1230-2525 bkW) | 1200-1800 rpm | IMO II |
| 3516C Tier 3 | 2131-2675 bhp (1590-1995 bkW) | 1600 rpm | EPA Tier 3, IMO II |
| 3516E Tier 4 / IMO III | 2501-3386 bhp (1865-2525 bkW) | 1600-1800 rpm | U.S. EPA Tier 4 Final, IMO III |
| C175-16 | 2683-3420 bhp (2001-2550 bkW) | 1600-1800 rpm | IMO II |
| C280-16 | 6169-7577 bhp (4600-5650 bkW) | 900-1000 rpm | IMO II |
| MODEL | Power Range | Speed Range | Emissions |
| C7.1 Tier 3 / IMO II | 1095 mm | 891 mm | 798 mm |
| C12 | 340-490 bhp (254-366 bkW) | 1800-2300 rpm | IMO I, IMO II |
| C18 ACERT IMO II | 454-715 bhp (339-533 bkW) | 1800-2100 rpm | IMO II, EU IIIA |
| C18 ACERT Tier 3 | 469-1001 bhp (350-747 bkW) | 1800-2300 rpm | EPA Tier 3 Commercial, IMO II, EU IW |
| C32 ACERT IMO II | 660-1450 bhp (492-1081 bkW) | 1600-2300 rpm | IMO II, EU IW |
| C32 ACERT Tier 3 | 750-1800 bhp (559-1342 bkW) | 1600-2300 rpm | EPA Tier 3, IMO II, EU IW |
| C32 Tier 3 / IMO II | 61-1450 bhp (46-1072 bkW) | U.S. EPA Tier 3 / IMO II emissions certified | Turbocharged-aftercooled aspiration |
| C32 Tier 4 / IMO III | 3751 mm | 2130 mm | 597 mm |
| 3508C | 775-1100 bhp (578-820 bkW) | 1200-1600 rpm | IMO II, EU IW |
| 3512C IMO II | 1280-2551 bhp (955-1902 bkW) | 1200 rpm, 1600 rpm, 1800 rpm | IMO II, EU IW |
| 3512C Tier 3 | 1340-2366 bhp (1000-1765 bkW) | 1600-1800 rpm | EPA Tier 3, IMO II |
| 3512E Tier 4 / IMO III | 1341-2549 bhp (1000-1901 bkW) | 1600-1800 rpm | U.S. EPA Tier 4 Final, IMO III |
| 3516C IMO II | 1650-3386 bhp (1230-2525 bkW) | 1200-1800 rpm | IMO II |
| 3516C Tier 3 | 2131-2675 bhp (1590-1995 bkW) | 1600 rpm | EPA Tier 3, IMO II |
| 3516E Tier 4 / IMO III | 2501-3386 bhp (1865-2525 bkW) | 1600-1800 rpm | U.S. EPA Tier 4 Final, IMO III |
| C175-16 | 2683-3420 bhp (2001-2550 bkW) | 1600-1800 rpm | IMO II |
| C280-16 | 6169-7577 bhp (4600-5650 bkW) | 900-1000 rpm | IMO II |
| MODEL | Power Range | Speed Range | Emissions |
C18 ACERT IMO II
Power Range454-715 bhp (339-533 bkW)
Speed Range1800-2100 rpm
EmissionsIMO II, EU IIIA
C18 ACERT Tier 3
Power Range469-1001 bhp (350-747 bkW)
Speed Range1800-2300 rpm
EmissionsEPA Tier 3 Commercial, IMO II, EU IW
C32 ACERT IMO II
Power Range660-1450 bhp (492-1081 bkW)
Speed Range1600-2300 rpm
EmissionsIMO II, EU IW
C32 ACERT Tier 3
Power Range750-1800 bhp (559-1342 bkW)
Speed Range1600-2300 rpm
EmissionsEPA Tier 3, IMO II, EU IW
C32 Tier 3 / IMO II
Power Range61-1450 bhp (46-1072 bkW)
EmissionsU.S. EPA Tier 3 / IMO II emissions certified
AspirationTurbocharged-aftercooled aspiration
C32 Tier 4 / IMO III
6 Brick Z-Flow - Length147.7 in
Minimum Length83.9 in
6 Brick Z-Flow - Height23.5 in
3512C IMO II
Power Range1280-2551 bhp (955-1902 bkW)
Speed Range1200 rpm, 1600 rpm, 1800 rpm
EmissionsIMO II, EU IW
3512C Tier 3
Power Range1340-2366 bhp (1000-1765 bkW)
Speed Range1600-1800 rpm
EmissionsEPA Tier 3, IMO II
3512E Tier 4 / IMO III
Power Range1341-2549 bhp (1000-1901 bkW)
Speed Range1600-1800 rpm
EmissionsU.S. EPA Tier 4 Final, IMO III
3516C Tier 3
Power Range2131-2675 bhp (1590-1995 bkW)
Speed Range1600 rpm
EmissionsEPA Tier 3, IMO II
3516E Tier 4 / IMO III
Power Range2501-3386 bhp (1865-2525 bkW)
Speed Range1600-1800 rpm
EmissionsU.S. EPA Tier 4 Final, IMO III
C18 ACERT IMO II
Power Range454-715 bhp (339-533 bkW)
Speed Range1800-2100 rpm
EmissionsIMO II, EU IIIA
C18 ACERT Tier 3
Power Range469-1001 bhp (350-747 bkW)
Speed Range1800-2300 rpm
EmissionsEPA Tier 3 Commercial, IMO II, EU IW
C32 ACERT IMO II
Power Range660-1450 bhp (492-1081 bkW)
Speed Range1600-2300 rpm
EmissionsIMO II, EU IW
C32 ACERT Tier 3
Power Range750-1800 bhp (559-1342 bkW)
Speed Range1600-2300 rpm
EmissionsEPA Tier 3, IMO II, EU IW
C32 Tier 3 / IMO II
Power Range61-1450 bhp (46-1072 bkW)
EmissionsU.S. EPA Tier 3 / IMO II emissions certified
AspirationTurbocharged-aftercooled aspiration
C32 Tier 4 / IMO III
6 Brick Z-Flow - Length3751 mm
Minimum Length2130 mm
6 Brick Z-Flow - Height597 mm
3512C IMO II
Power Range1280-2551 bhp (955-1902 bkW)
Speed Range1200 rpm, 1600 rpm, 1800 rpm
EmissionsIMO II, EU IW
3512C Tier 3
Power Range1340-2366 bhp (1000-1765 bkW)
Speed Range1600-1800 rpm
EmissionsEPA Tier 3, IMO II
3512E Tier 4 / IMO III
Power Range1341-2549 bhp (1000-1901 bkW)
Speed Range1600-1800 rpm
EmissionsU.S. EPA Tier 4 Final, IMO III
3516C Tier 3
Power Range2131-2675 bhp (1590-1995 bkW)
Speed Range1600 rpm
EmissionsEPA Tier 3, IMO II
3516E Tier 4 / IMO III
Power Range2501-3386 bhp (1865-2525 bkW)
Speed Range1600-1800 rpm
EmissionsU.S. EPA Tier 4 Final, IMO III