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Caterpillar
3508B Marine
High-speed marine diesel for propulsion and GenSet on workboats, tugs, ferries, and yachts. Variants: 3508, 3512, 3516.
540.0 kW
Power
Engine Specifications
8
Cylinders
170 mm
Bore
190 mm
Stroke
540 kW
MCR Power
1200.0 rpm
MCR RPM
4-stroke
Stroke Type
Family: Caterpillar Cat 3500 Series
· Tier: IMO Tier II
· Fuel: MDO, MGO
Other Cylinder Configurations 2
Components & Design
Engine Control Unit (ECU / ECS)
Caterpillar
Cat 3516 ECM (Electronic Control Module)
Full-authority ADEM ECM controls injection timing, fuel quantity, and engine protection. Keep spare ECM on board.
Lead time: 4 wk
8.0 kg
Fuel Valve (Injector Nozzle)
Caterpillar
Cat 3516 MEUI Unit Injector
Mechanically-actuated, electronically-controlled unit injector (MEUI). Replace at 8,000-12,000 hrs or per oil analysis.
Lead time: 3 wk
6.0 kg
Scavenge Air Cooler (SAC)
Caterpillar
Cat 3516 Aftercooler (SCAC)
Separate-circuit aftercooler (SCAC). Clean air side at 4,000 hrs. Pressure test coolant side annually.
Lead time: 6 wk
120.0 kg
Technical Data
unified from engine model
True
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Equipment Model #38050
· ✓ still in production