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Well Service Engines

Oil and gas producers have relied on Caterpillar since the industry's earliest days. For 60 years, we've powered the petroleum business on land. Now we go with it onto the ocean, hundred of miles out, thousands of feet down.

3512E Tier 4 Final Well Service Engine

Well stimulation operations in the oilfield are complex and demanding. The 3512E Tier 4 Final engine for well service operations was specifically developed to meet Tier 4 Final emissions and to meet the highest standards in performance, durability, and reliability. Cat engines are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty. 3512E engines, with ratings: 1678-1864 bkW (2250-2500 bhp) @ 1900 rpm meet U.S. EPA Non-road Mobile Tier 4 final emission standards.

Product Details

General Specifications

Minimum Rating 1678 bkW
Maximum Rating 1864 bkW
Aspiration Turbocharged-Aftercooled
Displacement 58.9 l
Flywheel and Flywheel Housing SAE No. 0
Flywheel Teeth 151
Stroke 215 mm
Bore 170 mm


Emissions Non-Road Mobile EPA Tier 4 Final


Length 3116 mm
Width 2308.7 mm
Height 2635 mm
Weight 7164 kg
  • Air Inlet System
    •  Air-to-air aftercooled
    •  Air cleaners (single element w/service indicator)
  • Air-to-air aftercooled
    • Air cleaners (single element w/service indicator)
      • Control System
        •  ADEM A4 ECU, LH
        •  With electronic fuel injector fuel system (10 amp DC power required to drive electronic engine control module)
      • Cooling System
        •  ATAAC
        •  Thermostats and housing, jacket water pump, gear-driven centrifugal (gear-driven centrifugal pumps)
      • Exhaust System
        •  Land Well Service Engine:
        •  Offshore Well Service Engine:
      • Flywheels & Flywheel Housing
        •  Flywheel, SAE No. 0, 151 teeth
      • Flywheel, SAE No. 0, 151 teeth
        • Fuel System
          •  Secondary/tertiary fuel filters
          •  Fuel priming pump (electric)
          •  Common rail fuel system
          •  Fuel transfer pump
        • Secondary/tertiary fuel filters
          • Fuel priming pump (electric)
            • Common rail fuel system
              • Fuel transfer pump
                • Lube System
                  •  Crankcase breather — top-mounted
                  •  Electric prelube
                  •  Fumes disposal
                  •  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
                  •  Oil scavenger pump
                • Mounting System
                  •  Trunion front support
                • Trunion front support
                  • Power Take-Offs
                    •  Accessory drive -- Lower LH/upper RH
                    •  Front housing, two-sided
                  • Protection System
                    •  ADEM A4 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
                  • General
                    •  Paint, Cat yellow
                    •  Vibration damper and guard
                    •  Lifting eyes
                    •  Hydraulic valve lash adjusters
                    •  Power link engine monitoring
                  • Air Inlet System
                    •  Optional heavy-duty air cleaners (dual element/service indicator with precleaners)
                    •  Four front-mounted turbochargers
                  • Charging System
                    •  Charging alternators
                  • Charging alternators
                    • Control System
                      •  Throttle position sensors
                      •  Local speed throttle control
                      •  Governor conversion
                      •  Variable speed radiator fan control
                    • Cooling System
                      •  Coolant regulator conversion
                      •  Water level switch gauge
                      •  Coolant level sensors and coolant conditioner
                      •  External transmission cooler connections
                      •  Variable speed hydraulic fan pump
                    • Emissions Certifications
                      •  US EPA Tier 4 Final
                    • Exhaust System
                      •  Flexible exhaust fitting
                      •  Elbows, flange, bellows, rain caps
                      •  Industrial and residential mufflers (painted steel and stainless steel)
                    • Fuel Systems
                      •  Flexible fuel lines
                      •  Primary fuel filter/fuel water separator
                    • Instrumentation
                      •  Remote panel display and remote cylinder temperature display
                    • Lube System
                      •  500- hour deep sump oil pan (rear sump pan)
                    • Power Take-Offs
                      •  Flywheel stub shaft
                      •  Front Crankshaft Adapter
                    • Flywheel stub shaft
                      • Front Crankshaft Adapter
                        • Protection System
                          •  Sensors
                          •  Shutoff controls
                        • Sensors
                          • Shutoff controls
                            • Starting System
                              •  Hydraulic starter
                              •  Hydraulic starter - RH
                              •  Dual hydraulic starter - LHR
                              •  Manual engine barring device
                            • General
                              •  Air compressor
                              •  Aftertreatment support package

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