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The 3508C marine propulsion engine meets IMO II emissions regulation and delivers more power with lower emissions for your marine propulsion needs. Additionally, the 3508C provides outstanding fuel efficiency and lube oil consumption. Standard or reverse rotation options are available as well as worldwide parts and service. The 3500 engine platform is a streamlined and proven design that provides industry-leading reliability & durability.

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Power Rating
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Power Range 775-1100 bhp (578-820 bkW) 775-1100 bhp (578-820 bkW)

A3 Electronic Control Unit (ECU)

• One of the most advanced electronic control systems available for Cat marine engines. • Faster with more memory capability than ADEM 2 • Compatible with several optional display systems • Does not require fuel cooling • Enhanced input/output capacity • Rugged marine design and IP66 connectors • Award-winning circuitry design

Engine-Mounted Instrument Panel

• Integrated MPD display for quick response and effective local control • Optional local speed control • Optional individual cylinder exhaust temperature scanner with data link for remote mounting • Local E-stop, warning indicators, horn • Plug & Run connections allow mounting on port or starboard side of engine

Marine Power Display (MPD)

• Graphic display of engine operating parameters in analog, digital, or bar-chart format • Rugged weatherproof construction • Fully user-configured display screens • Marine classification society-type approved • Diagnostic messages and alarms • Three-tier prioritization of events and diagnostics • Multilingual capability • Night-mode LCD display • ISO symbols for parameter identification

High Capacity High Efficiency Turbos

• Standard marine twin turbocharger configuration. • More reserved power for superior part load performance at continuous ratings • Turbos tuned for high power and excellent fuel consumption

Engine-Mounted Cat® Plate-Type Heat Exchanger

• Separate Circuit Aftercooled (SCAC) • Single heat exchanger for both jacket water and aftercooler systems • Single inlet and outlet connections for sea water • Lightweight and compact • Factory-installed piping and connections

Rigid Wiring Harness

• Highly durable: long service life • Flexibility for custom wire additions • Lined with fire retardant foam • Cost efficient replacement for premium wiring • Marine classification society approved

Power Distribution Box

• Isolates “control power” from alternator/starter/jacket water heater power • Mountable off engine • Allows end user to choose up to three independent power sources • Has built-in circuit breakers and switches for easy troubleshooting

Marine Classification Society Approvals

• ABS/DNV/LR/GL/CCS/BV/RINA

Electronic Features

• 3D histogram data of engine operation (load, speed, time) • Load feedback signal for CPP operation • Electronic torque limit for re-power and torque limited application equipment • Programmable droop • Adjustable governor gains • Condition-based maintenance • Monitoring features • Serial data bus communications • Primary and secondary A3 controllers on all propulsion engines

Cat Pilot House Panels

• Cat pilot house panels with or without Marine Power Display (MPD) • Easily connected to the engine customer connector • Ability to have full function helm panels and reduced function wing panels

Unit Injectors

• Caterpillar designed and built system • “Drop-in” installation • No threaded fuel connections • High pressure only inside injector does not require double wall lines or leak collection devices

Power Take-off

• Power take-off adapters available • Auxiliary drives for power take-offs for hydraulic pumps and compressors

Engine-Mounted Gear-Driven Pumps

• Standard engine-mounted aftercooler pump • Standard engine-mounted jacket water pump • Optional engine-mounted, gear-driven, high capacity sea water pump

Engine Mounting System

• Rigid mounting points • Optional resilient mounting

In-Hull Overhaul

• Easily removable side covers • Accessible bearing caps

3508C Standard Equipment

Fuel System
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  • Fuel filter, RH, with service indicators.
  • Fuel transfer pump.
  • Electronically controlled init injectors

3508C Optional Equipment

Charging System
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  • Battery Charger, 10 amp
  • Charging Alternators