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The 3512E marine auxiliary 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 732-2399 bhp (546-1789 bkW) 732-2399 bhp (546-1789 bkW)

Engine Specifications

  • Aspiration TA TA
  • Emissions U.S. EPA Tier 4 Final, IMO III U.S. EPA Tier 4 Final, IMO III
  • Bore 6.69 in 170.0 mm
  • Configuration Vee 12, 4-Stroke-Cycle Diesel Vee 12, 4-Stroke-Cycle Diesel
  • Displacement 3574.0 in³ 58.6 l
  • Rotation from Flywheel End Counterclockwise Counterclockwise
  • Stroke 8.46 in 215.0 mm

Dimensions & Weights

  • Maximum Height 91.9 in 2335.0 mm
  • Maximum Length 104.2 in 2624.0 mm
  • Maximum Width 81.9 in 2081.0 mm
  • Minimum Dry Weight 18025.0 lb 8176.0 kg
  • Minimum Height 91.9 in 2335.0 mm
  • Minimum Length 104.2 in 2624.0 mm
  • Minimum Width 71.2 in 1808.0 mm
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