New CAT Equipment

3512E Marine Auxiliary/DEP Engine (U.S. EPA Tier 4 Final)

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.

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Product Specs

Power Rating

Power Range 732-2399 bhp (546-1789 bkW)

Engine Specifications

Aspiration TA
Emissions U.S. EPA Tier 4 Final, IMO III
Bore 6.69 in
Displacement 3574 inĀ³
Stroke 8.46 in
Rotation from Flywheel End Counterclockwise
Configuration Vee 12, 4-Stroke-Cycle Diesel

Dimensions & Weights

Maximum Width 81.9 in
Minimum Width 71.2 in
Maximum Height 91.9 in
Minimum Height 91.9 in
Minimum Dry Weight 18025 lb
Maximum Length 125.4 in
Minimum Length 104.2 in