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.
| Aspiration | TA |
| Emissions | U.S. EPA Tier 4 Final, IMO III |
| Bore | 6.69in |
| Displacement | 3574in³ |
| Stroke | 8.46in |
| Rotation from Flywheel End | Counterclockwise |
| Configuration | Vee 12, 4-Stroke-Cycle Diesel |
| Power Range | 732-2399 bhp (546-1789 bkW) |
| Maximum Width | 81.9in |
| Minimum Width | 71.2in |
| Maximum Height | 91.9in |
| Minimum Height | 91.9in |
| Minimum Dry Weight | 18025lb |
| Maximum Length | 125.4in |
| Minimum Length | 104.2in |
| Air Inlet System |
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| Control System |
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| Exhaust System |
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| General |
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| Fuel System |
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| Cooling System |
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