3512B

Commercial Propulsion Engines

The Cat 3512B marine engine includes the Advanced Diesel Engine Management System II, Control Monitoring Protection System, Customer Communication Module, and Digital Voltage Regulator. Benefits include improved fuel economy, reduced visible and gaseous emissions, enhanced diagnostic and monitoring capabilities, and increased rated output with no reduction in reliability.

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Power Range 1100-2250 bhp (820-1678 bkW)

Speed Range 1200-1925 rpm

Emissions IMO I

Aspiration TTA

Availability

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3512B

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FEATURES & BENEFITS

Electronic Unit Injector fuel system featuring 10-20 percent higher injection pressure than other 3500 Family engines

Caterpillar ADEM II Electronic Engine Control/Monitoring System that provides infinitely variable injection timing and a state-of-the-art monitoring and protection system with self-diagnosing electronic sensors

“Deep Crater/Low Crevice Volume” twopiece articulated piston design with forged steel crown and cast aluminum skirt that enhance combustion efficiency to provide improved fuel efficiency and lower levels of gaseous and visible emissions

Larger diameter (98 mm vs. 92 mm bore) camshaft for higher injection pressures, shorter injection durations, and less gear train torsional vibration

Strengthened fuel injection actuation system and rear gear train to maintain reliability and durability while providing higher injection pressures

Center-mounted low inertia turbochargers (four on 3512B and 3516B; two on 3508B) on EPG models

Dual rear mounted turbochargers on all marine configurations

Separate circuit or sea water aftercooling to supply the optimum temperature air to the combustion chamber to reduce emissions and fuel consumption and maximize power output

Streamlined intake and exhaust manifolds to reduce parasitic pumping losses and increase combustion efficiency

SPECIFICATIONS FOR 3512B

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Power Rating

Power Range

1100-2250 bhp (820-1678 bkW)

Engine Specifications

Speed Range	1200-1925 rpm
Emissions	IMO I
Aspiration	TTA
Bore	170 mm
Stroke	190 mm
Displacement	51.8 l
Rotation from Flywheel End	Counterclockwise or Clockwise
Configuration	Vee 12, 4-Stroke-Cycle Diesel

Dimensions & Weights

Minimum Dry Weight	6537 kg
Minimum Length	2819 mm
Maximum Length	121 mm
Minimum Height	1806 mm
Maximum Height	2091 mm
Minimum Width	1703 mm
Maximum Width	1785 mm
Maximum Dry Weight	6537 kg

SELECT MODELS TO COMPARE

Commercial Propulsion Engines

3512E Tier 4 / IMO III

Power Range 1341-2549 bhp (1000-1901 bkW)

Speed Range 1600-1800 rpm

Emissions U.S. EPA Tier 4 Final, IMO III

Aspiration TTA

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Commercial Propulsion Engines

C32 IMO II

Power Range 660-1450 bhp (492-1081 bkW)

Speed Range 1600-2300 rpm

Emissions IMO II, EU IW

Aspiration TTA

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Commercial Propulsion Engines

C280-16

Power Range 6169-7577 bhp (4600-5650 bkW)

Speed Range 900-1000 rpm

Emissions IMO II

Aspiration TTA

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Commercial Propulsion Engines

C18 ACERT Tier 3

Power Range 469-1001 bhp (350-747 bkW)

Speed Range 1800-2300 rpm

Emissions EPA Tier 3 Commercial, IMO II, EU IW

Aspiration TA, TTA

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Commercial Propulsion Engines

C280-8 Tier 4/ IMO III

Power Range 3299-3634 bhp (2460-2530 bkW)

Speed Range 1000 rpm

Emissions EPA Tier 4, IMO III

Aspiration TA

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Commercial Propulsion Engines

C32 ACERT Tier 3

Power Range 750-1800 bhp (559-1342 bkW)

Speed Range 1600-2300 rpm

Emissions EPA Tier 3, IMO II, EU IW

Aspiration TTA

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Commercial Propulsion Engines

C9.3 ACERT

Power Range 375-476 bhp (280-355 bkW)

Speed Range 1800, 2100, 2300 rpm

Emissions IMO II, U.S. EPA Tier 3, China Stage II

Aspiration Turbocharged-aftercooled

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Commercial Propulsion Engines

C32 Tier 4 / IMO III

6 Brick Z-Flow - Length 3751 mm

Power Range 1000-1450 bhp (746-1081 bKW)

Minimum Length 2130 mm

6 Brick Z-Flow - Height 597 mm

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PAYMENT & DELIVERY

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3512B

Commercial Propulsion Engines

3512B

FEATURES & BENEFITS

SPECIFICATIONS FOR 3512B

Power Rating

Engine Specifications

Dimensions & Weights

SELECT MODELS TO COMPARE

3512E Tier 4 / IMO III

C32 IMO II

C280-16

C18 ACERT Tier 3

C280-8 Tier 4/ IMO III

C32 ACERT Tier 3

C9.3 ACERT

C32 Tier 4 / IMO III

SEND REQUEST

GET A QUOTE

PAYMENT & DELIVERY

Select Up to 3 Models to Compare

FEATURES & BENEFITS

Electronic Unit Injector fuel system featuring 10-20 percent higher injection pressure than other 3500 Family engines

FEATURES & BENEFITS

Caterpillar ADEM II Electronic Engine Control/Monitoring System that provides infinitely variable injection timing and a state-of-the-art monitoring and protection system with self-diagnosing electronic sensors

FEATURES & BENEFITS

“Deep Crater/Low Crevice Volume” twopiece articulated piston design with forged steel crown and cast aluminum skirt that enhance combustion efficiency to provide improved fuel efficiency and lower levels of gaseous and visible emissions

FEATURES & BENEFITS

Larger diameter (98 mm vs. 92 mm bore) camshaft for higher injection pressures, shorter injection durations, and less gear train torsional vibration

FEATURES & BENEFITS

Strengthened fuel injection actuation system and rear gear train to maintain reliability and durability while providing higher injection pressures

FEATURES & BENEFITS

Center-mounted low inertia turbochargers (four on 3512B and 3516B; two on 3508B) on EPG models

FEATURES & BENEFITS

Dual rear mounted turbochargers on all marine configurations

FEATURES & BENEFITS

Separate circuit or sea water aftercooling to supply the optimum temperature air to the combustion chamber to reduce emissions and fuel consumption and maximize power output

FEATURES & BENEFITS

Streamlined intake and exhaust manifolds to reduce parasitic pumping losses and increase combustion efficiency

Select Up to
3 Models to Compare