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  • 3512E - Auxiliary Engines


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.

58.6 L
Vee 12, 4-Stroke-Cycle Diesel


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Standard Equipment
Power Range 732-2399 bhp (546-1789 bkW)
Standard Equipment
Speed Range
Emissions U.S. EPA Tier 4 Final, IMO III
Aspiration TA
Bore 170.0 mm
Stroke 215.0 mm
Displacement 58.6 L
Rotation (from flywheel end) Counterclockwise
Configuration Vee 12, 4-Stroke-Cycle Diesel
Standard Equipment
Minimum Dry Weight 8176.0 kg
Minimum Length 2624.0 mm
Maximum Length 2624.0 mm
Minimum Height 2335.0 mm
Maximum Height 2335.0 mm
Minimum Width 1808.0 mm
Maximum Width 2081.0 mm