New | C9.3 Commercial Propulsion Engine

The C9.3 ACERT propulsion engine has a B rating of 375 bhp (280 bkW) at 1800 rpm, a C rating of 416 bhp (310 bkW) at 2100 rpm, and a D rating of 476 bhp (355 bkW) at 2300 rpm. The C9.3 propulsion, auxiliary, and generator set engines have a common rail fuel system for optimal combustion and lower emissions. Cooling system options for the propulsion and auxiliary engines include heat exchanger with sea water aftercooling, and keel with combined circuit or separate circuit aftercooling. The genset packages are available with heat exchanger, keel, or radiator cooling. These products are EPA Tier 3 and IMO II certified. In addition the propulsionengine ratings are EU Stage IIIA certified and auxiliary and gen sets are also CCNR Stage II certified.

Power Rating
Power Range375-476 bhp (280-355 bkW)
Engine Specifications
Speed Range1800-2300 rpm
EmissionsEPA Tier 3 Commercial, IMO II, EU IW
Bore4.53 in
Stroke5.87 in
Displacement568 in³
Rotation from Flywheel EndCounterclockwise
ConfigurationIn-line 6, 4-Stroke-Cycle Diesel
Dimensions & Weights
Width - Engine38.5 in
Height43 in
Length - Engine57.2 in
Engine Dry Weight - Approximate945-1122 kg (2083-2474 lbs)

Electronic Control System Provides Industry-Leading Torque And Throttle Response At Low Speeds, While Maintaining Fuel Efficiency At High Speeds

Common Rail Fuel System Enables Optimum Combustion And Low Emissions

Rh And Lh Locations For Fuel And Oil Filters And Dipstick Improves Serviceability

Compatible With Cat® Displays And Available Remote-Mounted Display Panel With Start, Stop, And Engine Diagnostics

12v Or 24v Electrical System

Marine Classifi Cation Society Certifi Cates: Abs, Bv, Ccs, Crs, Dnv, Gl, Irs, Kr, Lr, Nk, Prs, Rina, Rs

Optional Equipment

Dual starting motors
  • 24V electric and air
  • 24V electric (2)



Other Models in this Category

Select Marine Power System Type

Hawthorne Power Systems Logo

Request a Quote

Why Cat is Better. Machine Comparison

With only a few days notice, we were able to get the emergency system working properly. Hawthorne Cat provided great leadership and excellent field support.
Mark Cripe
Helix Electric

San Diego - Power
Kyle Farmer
Engine Business Manager
858.376.6821 office
760.715.9565 mobile

Tim Roberts
Product Support
General Manager
858.376.6820 office
858.583.8460 mobile

Mark Reza
Used Engine Sales Manager
858.376.6840 office
858.688.0076 mobile

Jeff Reid
Service Manager
858.376.6890 office
858.472.1852 mobile

Hawaii – Power
Cliff Yuen
Director of Sales & Rentals
808.676.0322 office
808.349.7767 mobile

Guam – Power
Myver Hecita
Power Systems Rental &
Sales Representative
671.649.4241 office
671.898.2740 mobile