New CAT Equipment

Cat C18 ACERT High Performance Propulsion Engine (Tier 3)

The C18 ACERT marine propulsion engine has high performance commercial application ratings of 814-1015 mhp (803-1001 bhp) at 2100-2300 rpm that meet U.S. EPA Tier 3, IMO II, and EU Stage IIIA emissions regulations. In addition to meeting the stricter EPA Tier 3 emissions, this engine now offers a fresh water aftercooled option for the commercial propulsion and auxiliary engines and genset packages. From fishing to offshore and everything in between, you can be confident that we have the solution to fit your needs.

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Product Specs


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
Aspiration TA,TTA
Bore 5.7 in
Stroke 7.2 in
Displacement 1106 inĀ³
Rotation from Flywheel End Counterclockwise
Configuration In-line 6, 4-Stroke-Cycle Diesel

Dimensions & Weights

Maximum Length 76 in
Minimum Length 73 in
Maximum Dry Weight 4299 lb
Minimum Height 47.2 in
Maximum Width 47.4 in
Minimum Dry Weight 4000 lb
Maximum Height 51.2 in
Minimum Width 44.6 in