New | Cat 3516B Marine Auxiliary/Generator Set Engine

The 3516B Auxiliary/Generator Set Engine incorporates a separate circuit aftercooling (SCAC) or sea water aftercooling (SWAC) system for all configurations. The primary advantage of the SCAC systsem is reduced aftercooler corrosion since no sea water circulates through the aftercooler. Many other improvements on these engines contribute to minimizing owning and operating costs. A strengthened fuel injection actuation system and rear gear train maintain reliability and durability while providing higher injection pressures. The 3516B also features thermo-laminated heat shields on all marine configurations to maintain surface temperatures below Marine Classification Society regulations.

Power Rating
Minimum Rating1726.0 bhp
Maximum Rating2549.0 bhp
Engine Specifications
ConfigurationVee 16 4-Stroke-Cycle Diesel
Bore6.7 in
Stroke7.5 in
Displacement4210.0 in3
Dimensions & Weights
Length125.2 in
Minimum Width67.1 in
Maximum Width84.4 in
Minimum Height80.8 in
Maximum Height82.7 in
Minimum Dry Weight17537.0 lb
Maximum Dry Weight17700.0 lb
  • Separate Circuit aftercooler core, corrosion resistant coated (air side)
  • Air cleaner, regular duty
  • Dual Turbochargers, 152 mm (6 in) OD straight connection
  • Caterpillar A-III Electronic Engine Control, LH with Electronic Unit Injector Fuel System
  • Rigid Wiring Harness
  • Oil cooler
  • Thermostats and housing, full open temperature 92 C (198 F)
  • Jacket water pump, gear driven, centrifugal
  • Auxiliary fresh water pump
  • Auxiliary sea water pump, centrifugal, non-self-priming
  • Dry gas tight exhaust manifolds with heat shields
  • Dual Turbochargers with watercooled bearings and heat shields
  • Exhaust outlet, vertical, 305 mm (12 in) round flanged outlet on engines @ 1800 rpm
  • Flywheel, SAE No. 00, 183 teeth
  • Flywheel housing, SAE No. 00
  • Fuel filter, RH, with service indicators
  • Fuel transfer pump
  • Electronically Controlled Unit Injectors
  • Graphical Unit (Marine Power Display) for analog or digital display of:
  • Crankcase breather, Top mounted
  • Oil filter, RH
  • Oil filler and dipstick, RH
  • 500 hours sump oil pan
  • Oil pump, gear type
  • Rails, engine mounting, engine length, industrial type, 254 mm (10 in), C-channel
  • Accessory drive
  • Lower RH, Lower LH
  • Front housing, Two-sided
  • A-III Electronic Monitoring System provides customer programmable engine de-ration strategies to protect against adverse operating conditions
  • Emergency stop push button (located in Electronic Instrument Panel) Safety shutoff protection:
  • Vibration damper and guard
  • Paint, Caterpillar Yellow engine with black rails.
  • Lifting eyes
  • NOTE: 1. Engines for heat exchanger cooling do NOT include heat exchanger. 2. When used with competitive generator, a TVA is recommended. An alternative vibration damper may be required. 3. Engine is wired for auto start stop



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