Cat 3516 Seattle Low

  • Specs Summary
  • Power Range
    1341-2549 bhp (1000-1901 bkW)
  • Speed Range
    1600-1800 rpm
  • Emissions
    U.S. EPA Tier 4 Final, IMO III
  • Aspiration

3512E Marine Propulsion Engine (U.S. EPA Tier 4 Final)

The 3512E marine propulsion engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO III marine emissions regulations. As the commercial marine industry adjusts their operations to meet U.S. EPA Tier 4 Final and IMO III emissions standards, Caterpillar Marine has introduced a solution built to maximize performance while meeting regulations. Caterpillar's combination of a fuel-efficiency-optimized engine and a selective catalytic reduction (SCR) aftertreatment system is a solution that not only reduces NOx emissions, but can also lower a customer's owning and operating costs in the process.

Power Rating

  • Power Range 1341-2549 bhp (1000-1901 bkW)

Engine Specifications

  • Speed Range 1600-1800 rpm
  • Emissions U.S. EPA Tier 4 Final, IMO III
  • Aspiration TTA
  • Bore 6.69 in (170 mm)
  • Stroke 8.46 in (215 mm)
  • Displacement 3574 in3 (58.6 L)
  • Rotation (from flywheel end) Counterclockwise
  • Configuration Vee 12, 4-Stroke-Cycle Diesel

Dimensions & Weights

  • Minimum Dry Weight 18025 lb (8176 kg)
  • Minimum Length 104.2 in (2624 mm)
  • Maximum Length 104.2 in (2624 mm)
  • Minimum Height 91.9 in (2335 mm)
  • Maximum Height 91.9 in (2335 mm)
  • Minimum Width 71.2 in (1808 mm)
  • Maximum Width 81.9 in (2081 mm)

Standard Equipment

Air Inlet System

  • Corrosion-resistant aftercooler core

Control System

  • Dual A5 engine control modules with electronic unit injection and low pressure fuel system

Exhaust System

  • Dual turbochargers with water-cooled bearings and heat shields


  • Vibration damper and guard
  • Meets SOLAS regulations

Fuel System

  • Duplex Fuel and Oil Filtration

Cooling System

  • Auxiliary fresh water pump
  • Gear Driven, centrifugal jacket water pump with 40% more capacity

Optional Equipment

Plate-type heat exchanger with integrated SCAC and JW Water expansion tanks

Special appearance packages with chrome covers

Marine society certifications

Power take-off

Certified marine alarm and protection safety system

Standard instrument panel with color touchscreen display

Mounting rails and trunnion mount options

Engine mounted fuel cooler (SCAC Water Cooled)

Sea water pump with 25% more capacity for cooling auxiliary vessel equipment

Closed crank case ventilation