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The 3512C (HD) offshore engine for well stimulation operations was specifically developed to operate in harsh environments offshore while meeting the highest standards in performance, durability, reliability, and emissions. Cat engines are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty. 3512C (HD) offshore engines, with ratings: 1678-1864 bkW (2250-2500 bhp) @ 1900 rpm meet IMO Tier II and U.S. EPA Marine Tier 2 emission standards.
Request a QuoteMaximum Rating2500BHP
Displacement58.9in³
Minimum Rating2150BHP
AspirationTurbocharged-Aftercooled
Flywheel and Flywheel HousingSAE No. 0
Flywheel Teeth151
Stroke8.5in
Bore6.7in
EmissionsIMO Tier II and EPA Marine Tier 2
Length113.8in
Width64.2in
Height86.1in
Weight14145lb
Standard
Heavy-duty air cleaners (dual element/service indicator)
Four center-mounted turbochargers
Standard
Cat® ADEM A3 ECU — LH
With electronic fuel injector fuel system (10 amp DC power required to drive electronic engine control module)
Optional
Local speed throttle control
Throttle position sensors
Governor conversion
Standard
Separate Circuit SCAC system
Torque converter connections
Thermostats and housing, jacket and separate circuit water pump, gear-driven centrifugal
Optional
Coolant regulator conversion
Water level switch gauge
Coolant level sensors and coolant conditioner
Standard
Land well service engine
Exhaust manifold, dry, slip joint with stainless steel wire seal
Four turbochargers with watercooled bearings (center mounted)
Exhaust outlet, dual 203 mm (8 in) round flange
Optional
Flexible exhaust fitting
Elbows, flange, exhaust adapters
Manifold and mufflers
Standard
Flywheel, SAE No. 0, 151 teeth
Flywheel housing, SAE No. 0
Standard
Primary fuel filter
Fuel priming pump
Fuel filter — RH spin-on type
Fuel transfer pump
Electronically controlled unit injectors
Standard
No standard instrumentation
Optional, remote instrumentation available
Service meter
Optional
Remote panel display and remote cylinder temperature display
Gauges and instrument panels
Standard
Crankcase breather — top mounted
Oil cooler
Oil filler and dipstick — LH
Oil pump
Oil filter — RH spin-on type
Rear sump oil pan — 250-hour change interval
Oil pan drain valve — 1" NPT female connection
Fumes disposal
Scavenger pump
Optional
Oil pans and filters
Deep sump oil pan and front sump pan
Standard
Trunion front support
Standard
Accessory drive — lower LH
Front housing — two-sided
Optional
Front crankshaft adapter
Flywheel stub shaft
Standard
ADEM A3 ECU system to provide customer programmable engine deration strategies to protect against adverse operating conditions
Emergency stop logic inputs provided at 40-pin customer interface connection
Dual air inlet shutoff
Oil pressure monitor
Optional
Sensors
Shutoff controls
Standard
General
Vibration damper and guard
Lifting eyes
Optional
Charging alternators
Optional
Flexible fuel lines
Water/fuel separator
Fuel level switch
Optional
Air starting motors
Electric starting motors
Hydraulic starter
Ether starting aids
Battery sets — 24V
Battery cable and battery rack
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