Cat C7.1 ACERT Generator Set

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Cat® C7.1 Diesel Marine Generator Set has three phase ratings of 50 Hertz at 100, 118, and 150 ekW with heat exchanger cooling that meet U.S. EPA Tier 3 commercial, IMO II, and EU CC2 emissions standards. The C7.1 also has three phase ratings of 60 Hertz at 118, 150, 175, and 175 ekW with heat exchanger cooling that meet U.S. EPA Tier 3 commercial, IMO II, and EU CC2 emissions standards. C7.1 gen set is available in 12 or 24 volt and this compact package is ideal for a wide range of commercial and pleasure craft applications.

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Emissions/Fuel Strategy EPA Tier 3, IMO II, EU CC2
Frequency 50 Hz or 60 Hz
Maximum Rating 200 ekW (250 kVA)
Minimum Rating 100 ekW (125 kVA)
Speed 1500 rpm (50 hz) or 1800 rpm (60 hz)
Aspiration TA
Bore 4.13in
Displacement 433.3in³
Engine Model In-line 6, 4-Stroke-Cycle Diesel
Fuel System Common Rail Fuel System
Governor Type Electronic
Stroke 5.3in
IP Rating IP23 Water protection
Insulation Class H
Number of Leads 12
Pitch 2/3
Voltage Regulator Solid state
Height 49.7in
Length 76.2 in/1935 mm (minimum), 83.3 in/2116 mm (maximum)
Weight 1652 -1840 kg, 3634-4026 lb
Width 37.6in

Standard Equipment:

  • Air Inlet System
    • Open Crankcase Ventilation (OCV) system
    • Turbocharger, jacket water cooled
    • Integrated coolant lines into manifold utilizing EGR circuit
  • Control System
    • Panels available in RH, LH, and rear configurations with a remote mount option
    • Electronic diagnostics and fault logging
    • Electronic governor
    • Electronic Control Module (ECM)
    • SAE J1939 data link Ratings Only
    • Electronic fuel/air ratio control
  • Cooling System
    • Integrated heat exchanger and aftercooler
    • Compact design integral coolant passages
    • Thermostat and housing
    • Jacket Water Heater 120/240V option
    • Auxiliary seawater pump, gear driven
    • Engine mounted heat exchanger, removable tubeBundle (for sea water) (heat exchanger engines only)
    • Engine oil cooler
    • Auxiliary sea water lines
    • Keel cooling
  • Exhaust System
    • Water-cooled exhaust manifold & turbocharger
    • 152 mm (6 in) round flanged outlet
    • Dry Elbow/Flange options
  • Flywheels & Flywheel Housings
    • Flywheel Housing, SAE No. 2
    • Flywheel, 134 teeth
    • SAE standard rotation
  • Fuel System
    • Common Rail Fuel System
    • Simplex and Duplex Fuel options
    • Flexible fuel line option
    • Fuel transfer pump, gear driven
  • Generators And Generator Attachments
    • 12 leads
    • 3 phase Brushless
    • Separately excited from auxiliary winding to provide 300% short circuit current up to 10 seconds
    • 2/3 Pitch
    • Broad voltage band
    • IP23 Water protection
    • Solid state voltage regulator with integral voltage adjustment
    • Class H insulation
    • Generator temperature rise exceeds marine society requirements for 105 C @ 50 C ambient - prime 85 C @ 50 C ambient - prime Connection poles
  • Lube System
    • Crankcase breather
    • Simplex and Duplex options
    • Oil filter, RH service
    • Oil filler, in valve cover and timing case (option)
    • Oil level gauge, RH service
    • Oil pan
    • Oil pan drain, RH`
    • Lubricating oil
    • Engine oil pump (gear driven)
  • Mounting System
    • Skiddable base frame
    • Anti vibration isolators between base and engine-generator
  • Power Take-offs
    • Poly-V groove for alternator drive
    • PTO Shaft Kit (optional)
  • General
    • Torsional vibration damper and guard
    • Paint, Caterpillar yellow
    • Lifting eyes
    • Protective lifting covers
    • Literature
    • Battery disconnect switch
    • Plastic wrap packaging
    • Note: Keel-cooled gen sets do not include the keel cooler(s).
    • Engine is certified to D2/E2 emissions cycles

Optional Equipment:

  • Control System
    • Governor droop kit
  • Exhaust System
    • Dry Elbow
    • Dry Flange
    • Exhaust Temp Sensor
  • Fuel System
    • Flexible Fuel Lines
  • Lube System
    • Dipstick
  • Cooling System
    • Coolant recovery tank
    • Jacket Water Heater
  • Power Take-offs
    • Crankshaft Pulley
Renee HerndonRenee Herndon
21:55 29 Feb 24
Dalton was very helpful, The road construction, however, was not! 😂I would rather have to sand paper an alligators @$$ in a phone booth that to get in that mess again.
Michael BirrenMichael Birren
14:58 24 Feb 24
I purchased a used C-15 from a customer of Greg Pool was a running take out. I picked up the engine from the Greg Pool Cat near Nags Head NC. They started they had done all service on this engine stated the hours and all items replaced during the life of engine under their care. I just recently put the engine in my boat after 2 years of building the vessel I find that everything they said about the engine was a LIE!!! Turbo was Bad, After cooler was not updated to the newer version for the C-15 it was missing a terminal Resistor that was clearly stolen off the engine which created a major issue with start up upon installation. Greg Pool Caterpillar stated the hours at 3300 we find out there were 5700 hours. I didn’t do a start up or test run which I regret because i was dealing with a Caterpillar dealer i thought i could trust them. Clearly not Buyers Be Ware if your dealing with Greg Pool Caterpillar in NC. I have 3 of the C-15 engines in my Work boats here in Tampa Fl and my Cat dealership here is Ring power who have done an amazing job to get me going with this Engine. I am very Disappointed in The Caterpillar company for allowing such A dealership to exist.
David LawrenceDavid Lawrence
13:04 22 Feb 24
Brandon PierceBrandon Pierce
22:00 18 Feb 24
Darin NoeDarin Noe
01:17 16 Feb 24
Jose SotoJose Soto
15:26 23 Sep 23
Hunter ElliottHunter Elliott
16:17 07 Sep 23
Rick Kelly-CrapseRick Kelly-Crapse
21:06 25 Aug 23
They had all my parts for my 3208 Cat.Friendly folks at parts counter.
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