More available power over a wider operating range High power density for continuous applications with A and B ratings at 1200, 1600, and 1800 rpm.
More sophisticated electronic control system Provides improved engine monitoring, communication, and display capabilities. Results in easier integration with your vessel’s systems.
More flexible cooling system options Separate Circuit Cooling for optimum cooling capabilities. Keel cooled options are designed for high inlet water temperatures, minimizing cooler size and installation costs.
Durable and reliable The 3500 engine platform is a simple and proven design providing industry-leading reliability and durability.
True technical sophistication Delivers ease of maintenance and assembly/disassembly without the need for expensive processes or tools.
Meets EPA Tier 2 Marine, EU Stage IIIA and IMO emissions regulations
New Diesel Electric Propulsion ratings available 2250 ekw 3516-HD @ 60Hz 2000 ekw 3516-HD @ 60Hz
More power with lower emissions for your applications
• Unrestricted Continuous A ratings of up to 2450 bhp (1825 bkw) providing 4900 bhp (3650 bkw) for applications with twin engines.
• Heavy Duty B ratings of up to 3005 bhp (2240 bkw) providing 6010 bhp (4480 bkw) for applications with twin engines.
• Maximum Continuous C ratings of up to 3150 bhp (2350 bkw) providing 6300 bhp (4700 bkw) for applications with twin engines.
• Intermittent Duty D ratings of up to 3385 bhp (2525 bkw) providing 6770 bhp (5050 bkw) for applications with twin engines.
Outstanding fuel efficiency and lube oil consumption
Standard or reverse rotation options available
Long maintenance intervals
Worldwide parts and service availability
ADEM™ A3 Electronic Control Unit (ECU)
• One of the most advanced electronic control systems available for Cat® marine engines
• Faster, with more memory capability
• 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
3508C Specifications Displacement — L (cu in) ...................... 34.5
(2,107) Flywheel & Housing ............................SAE No. 0
Refill Capacity — L (gal)
Cooling System (engine only).................. 103 (27.1)
Lube oil System............................. 443 (117.0)
oil Change Interval (deep sump) ................ 1000 hours
3508C Length — mm (in)............................ 2117.3 (83.4)
width — mm (in)...............................1703 (67.1)
Height — mm (in) ............................1828.9 (72.1)
Marine Propulsion Rating
MODEL Rating rPM POWEr (bhp) POWEr (kW)
3508C A/B/C 1200 775/850/900 578/634/671
3508C A/B/C 1600 1000/1050/1100 746/783/820