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.

Product Brochures
Units: US Metric
Power Rating
Power Range
732-2399 bhp (546-1789 bkW)
Engine Specifications
U.S. EPA Tier 4 Final, IMO III
6.69 in
170 mm
3574 in³
58.6 l
8.46 in
215 mm
Rotation from Flywheel End
Vee 12, 4-Stroke-Cycle Diesel
Dimensions & Weights
Maximum Width
81.9 in
2081 mm
Minimum Width
71.2 in
1808 mm
Maximum Height
91.9 in
2335 mm
Minimum Height
91.9 in
2335 mm
Minimum Dry Weight
18025 lb
8176 kg
Maximum Length
125.4 in
3184 mm
Minimum Length
104.2 in
2624 mm
Standard Equipment
Air Inlet System
Control System
Exhaust System
Fuel System
Cooling System
Payment Calculator

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