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Caterpillar 3512 Marine Auxiliary Engine

The Caterpillar 3512 marine auxiliary drive engine series is an V-12, 4-Stroke-Cycle-Diesel engine with a 170 mm (6.7 in) bore, 190.0-215 mm (7.5-8.46 in) stroke and 51.8-58.6 L (3158-3574 in³) displacement.
The 3512 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.
As a partner of Caterpillar marine auxiliary engine for many years, EMAC is a professional power system solution provider. We provide global customers with one-stop power system-sales solutions from power system design to power system supply, from installation to commissioning, and from after-sales. Program. With sales service support for spare parts supply, EMAC is your reliable powertrain partner, offering you the best cost-effective and reliable system solutions.

General Specifications of 3512 Series

Engine Type:V-12, 4-Stroke-Cycle-Diesel
Displacement:51.8-58.6 L
Bore * Stroke:170 mm * 215 mm
Advertised Power:1424-1789 HP @ 1800 RPM
Peak Torque:N/A
Rated Speed:1800 RPM
Emissision:Tier 4 / IMO II-III
Aspiration Method:Turbocharged Aftercooled (TA)
Wet Weight:6532 kg (14400 lb)
Dimission Standards:3038.6 mm * 1988.0 mm * 2073.8 mm
caterpillar 3512 Marine Auxiliary Engine Catalogue

Engine Model

Rated Power


Engine Model

Rated Power


3512B1424 HP @ 1800 RPMTurbocharged Aftercooled (TA)3512E1789 HP @ 1800 RPMTurbocharged Aftercooled (TA)

Caterpillar 3512 Series Marine Auxiliary Engine

This is the list of all series of Caterpillar 3512 marine Auxiliary Engine.
Click here to find automotive engines by type (Fuel System & Emission Standard).

Caterpillar 3512B Marine Auxiliary Engine

Rated Power : 1424 HP @ 1800 RPM
Engine Type : V-12, 4-Stroke-Cycle-Diesel
Bore x Strock : 170 mm * 190 mm
Displacement : 51.8 L (3158 in³)
Emission Standard : N/A

Caterpillar 3512E Marine Auxiliary Engine

Rated Power : 1789 HP @ 1800 RPM
Engine Type : V-12, 4-Stroke-Cycle-Diesel
Bore x Strock : 170 mm * 215 mm
Displacement : 58.6 L (3574 in³)
Emission Standard : Tier 4/IMO II-III

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