Propulsion engines

C32B

The Cat® C32B engine is a powerful and versatile solution for commercial and high performance applications, offering a rated power range of 1200 to 1700 bhp. It meets stringent emissions standards, including IMO II, IMO II/III, and U.S. EPA Tier 4. The Cat C32B engine has an optimized design to enhance power density, deliver more power without significantly increasing size or weight. Additionally, its improved durability reduces maintenance needs and extends operational life, thereby lowering the total cost of ownership. This combination of high-power output, strict emissions compliance, and cost-effective durability makes the Cat C32B engine an excellent choice.

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Durability

  • Improved core engine component design delivers a more robust engine when compared to previous models which may lower your total cost of ownership. Core components enhanced include:          
  • Engine block          
  • Cylinder heads          
  • Crankshaft          
  • Connecting rods          
  • Main and connecting rod bearings  

Power Density

  • The Cat C32B marine engine has improved power density, with upgraded horsepower ratings. Users benefit from more horsepower and enhanced power output, showcasing advancements in engineering for better performance. - 1200 and 1300 hhp ratings now in A
  • Tier. This is a 20 to 30% power increase from a previous Cat C32 A- rating. - 1450 hp rating elevated to B-Tier 20% power increase from previous Cat C32 B- rating - 1700 hp rating increased 18% from previous C
  • Cat C32

Integration

  • Airless aftertreatment design simplifies vessel installation. The new design eliminates the need for expensive air compressors and lowers the cost of the SCR system. Certified Emissions:     
  • U.S. EPA Tier 4 and IMO II in approved emission zones      
  • IMO III solution is switchable to IMO II in approved emission zones Airless Aftertreatment solution    
  • Eliminates expensive air compressor on vessel     
  • Less vessel maintenance to air compressors    
  • Less weight due to air compressor size Wall Mounted dosing cabinet      
  • Improved Serviceability: Easier access for maintenance and repairs      
  • Space Optimizer: Frees up valuable floor space in engine room      
  • Enhanced Movability: Facilities better movement and workflow in the engine room  

Product Support through Global Dealer

  • Trained dealer technicians service every aspect of your engine
  • Cat parts and labor warranty
  • Preventative maintenance agreements available for repair

Power Density

The enhanced engine design boosts cylinder pressure and power output, ideally suited for your most demanding commercial marine applications.

Integration

The innovative airless aftertreatment design streamlines vessel installation and reduces air compressor maintenance which can lower your total cost of ownership.

Durability

Optimized core component design delivers a more robust, high performance engine compared to previous models.

Power Rating
Power Range1200 - 1700 bhp (895 - 1268 bkW)
Engine Specifications
ApplicationWorkboat
Speed Range1600 - 2300 rpm
EmissionsIMO II, IMO II/III, U.S. EPA Tier 4
AspirationTwin Turbocharged - Aftercooled
Bore5.71 in
Stroke6.38 in
Displacement1959.0 in³
Rotation from Flywheel EndCounterclockwise
ConfigurationV 12, 4-Stroke-Cycle Diesel
Approximate Weight8050 lb
Dimensions & Weights
Maximum Height70 in
Maximum Width61 in

Air Inlet Systems

  • Separate Circuit Aftercooler (SCAC)

Air Inlet System

  • Air cleaner (IMO II only)
  • Turbochargers, jacket water cooled
  • Turbochargers inlet, 152 mm (6 in) OD straight connection

Control System

  • Programmable Low Idle (550 - 750 rpm)
  • WOSR (Wide Operating Speed Range) available for - A, B, & C Ratings
  • Programmable High Idle Limit for WOSR Ratings
  • Electronic diagnostics and fault logging
  • Engine and transmission monitoring (speed, temperature, pressure)
  • Electronic fuel/air ratio control
  • Engine Protection Mode for extended ambient conditions
  • Torque Limiting functionality for WOSR ratings only
  • 70-pin customer connector
  • Throttle Input signal options

Cooling System

  • Separate Circuit After-Cooling (SCAC) for Heat Exchanged (HEX) & Keel cooled engines
  • Jacket Water (JW) and SCAC Heat Exchangers Shell & Tube for HEX cooled engines
  • SCAC pump, gear driven
  • Jacket water pump, gear driven
  • Sea water pump, bronze impeller, gear driven, for HEX cooled engines only
  • Sea water Pump & JW Heat Exchanger Connection: 76.2 mm (3 in) ID Standard
  • Keel Connections: 76.2 mm (3 in) ID Standard 4 Bolt ANSI Flange Connection

Exhaust System

  • 4 Bolt 130 mm (5.12 in) diameter flanged outlet
  • Water-cooled exhaust manifold & turbocharger

Flywheels & Flyweel Housings

  • SAE standard rotation (CCW facing exciter end)
  • Flywheel Housing: SAE No. 0, Flywheel: 18 inch, 136 teeth

Fuel System

  • Duplex Fuel Filters, Spin-on, RH & LH service
  • Fuel connections size:Supply JIC 37 Deg -10 (7/8-14), Return JIC 37 Deg -8 (3/4-16)
  • Fuel transfer pump, gear driven
  • Manual fuel priming pump

Lube System

  • Simplex Oil Filters, RH or LH service
  • Shallow or Deep sump oil pan
  • RH or LH service oil filler locations
  • RH or LH service dipstick
  • Oil pump, gear driven

Mounting System

  • Front support

Power Take-Offs

  • Front Poly-V groove pulley (Quantity 1) for auxiliary drives

General

  • Engine does not ship with zinc components
  • C32B Marine Commerical Prop Spec Sheet (1200 bhp - 1450 bhp)
    application/pdf
  • C32B Marine Commerical Prop Spec Sheet (1700 bhp)
    application/pdf

Need installed dimensions with enclosure and tank? See Model Configurations