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The Cat® 3512C marine propulsion engine delivers results under hard working conditions. This engine family is designed to maximize the performance of your invested dollars with a wide range of available power ratings, standard and reverse rotation configurations, no required aftertreatment, and efficient fuel consumption. This engine is available as IMO II or China Stage II emissions compliant making it an excellent propulsion engine choice for Tug, Governmental, and other workboat applications.

Pricing: Contact for Pricing Why we quote: Cat® machines are often configured to your job (attachments, hydraulics, cab options) and freight/taxes can vary by location. Request a quote to get accurate pricing based on your exact setup—typically within 1–2 business days.

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    Power Range 1281 - 2552 bhp
    Aspiration Twin Turbocharged Aspirator
    Bore 6.69in
    Configuration V 12, 4-Stroke-Cycle Diesel
    Displacement 3161in³
    Displacement - HD 3574in³
    Emissions IMO II, China II
    Rotation from Flywheel End Counterclockwise or Clockwise
    Speed Range 1200 - 1800 rpm
    Stroke 7.48in
    Stroke - HD 8.46in
    Length - Engine 111.1in
    Maximum Dry Weight 16340lb
    Maximum Height 75in
    Maximum Length 102in
    Maximum Width 80.2in
    Minimum Dry Weight 14400lb
    Minimum Height 75in
    Minimum Length 102in
    Minimum Width 80.2in

    Standard Equipment:

    • Separate circuit aftercooler core, corrosion resistant coated (air side)
    • Powercore air cleaner
    • Dual Caterpillar A6 Electronic Engine Control with Electronic Unit Injector Fuel System
    • Rigid Wiring Harness (20 amp DC power required to drive Electronic Engine Control Module)
    • 3500C engines:
    • Fuel transfer pump
    • Electronically Controlled Unit Injectors
    • Duplex Fuel Filters
    • Electronic service meter, instrument panel (24V), start/stop switch, emergency stop button, maintenance due light, diagnostic light, warning light, maintenance clear switch, start motor magnetic switch, 15 and 3A breakers
    • Graphical Unit (Color Marine Power Display) for analog or digital of:
    • Crankcase breather groups, Top mounted
    • Oil filler and dipstick, LH or RH
    • Oil pump, gear type
    • 250 / 500 / 1000 hour sump oil pan options
    • Rails, engine mounting, ledge type, 203 mm x 203 mm (8 in x 8 in) or Front Trunnion
    • Accessory drives: Lower RH, lower LH
    • Front housing, two-sided
    • A6 Electronic Monitoring System provides customer programmable engine derating strategies to protect against adverse operating conditions
    • Emergency stop push button (located in Electronic Instrument Panel)
    • Safety shutoff protection:
    • Vibration damper and guard
    • Lifting eyes
    • NOTE: Engines for heat exchanger cooling do NOT include heat exchange
    • Flywheel, SAE No. 00, 183 teeth
    • Flywheel housing, SAE No. 00, 183 teeth
    • Oil cooler
    • Thermostats and housing, Full open temperature 92 C (198 F)
    • Jacket water pump, gear driven, centrifugal
    • Auxiliary fresh water pump
    • Aftercooler system: If using glycol, up to maximum 20% glycol concentration is allowed

    Optional Equipment:

    • Air Inlet Adapters
    • Battery Chargers
    • Charging Alternator 24V/60amp
    • Throttle Control
    • Coolant Shunt Tank
    • Cooling System Options
    • Flexible Fittings
    • Elbows, Flexible Fittings, and Flanges for exhaust connections
    • Flanges
    • Flange and Exhaust Expanders
    • Mufflers
    • Fuel Cooler Heat Exchanger - Sea Water
    • Primary Fuel Filter
    • Fuel Level Switch
    • Rigid Fuel Lines
    • Flexible Fuel Lines
    • Communication Modules
    • Color Marine Power Display System equipped with access to Marine Digital Services
    • Pilot House Instrument Panels
    • Marine Gear Sensors
    • Sump Pumps
    • Lubricating Oil
    • Stub Shafts
    • Crankshaft Pulleys
    • Damper Guard
    • Flexible Coupling and Guards
    • Green Passport Documentation
    • Spray Shielding
    • Shutoff and Alarm Contactors
    • Special Appearance Packages with Chrome Covers
    • Yacht Class Finish
    • Air Starting Motor Options
    • Battery Sets - 24 Volt - Dry
    • Battery Rack
    • Engine Supports
    • Vibration Isolation Mountings
    • Shrink Wrap Protection
    • Storage Preservation with Glycol Solution/Vapor Corrosion Inhibitor
    • Export Boxing
    • Export Packaging

    What Our Customers Are Saying About Us

    Gregory Poole Equipment Company place picture
    4.0
    Based on 58 reviews
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    Tom Corona profile picture
    Tom Corona
    21:51 06 May 26
    Rich Stidd profile picture
    Rich Stidd
    22:10 02 May 26
    John Karpathian profile picture
    John Karpathian
    16:21 24 Jan 26
    Clean store and great employees
    Hunter Flaugher profile picture
    Hunter Flaugher
    12:56 06 Aug 25
    Hydraulic pump shop is unmatched. I made the mistake of going somewhere else before bringing my pump here. These guys were more than helpful and friendly. Went out of their way to help me find a solution for my problem even when it didn’t benefit them. This is how businesses should be run. I won’t go anywhere else.
    Brian Hrudka profile picture
    Brian Hrudka
    16:45 12 Feb 25
    Too bad Poole Cat Field Service is better at invoicing than actually getting my machines moving.

    A prompt and courteous technician arrived, and correctly diagnosed two problems with my mini Ex. Thank you. I corrected those problems, but machine still did not work.

    He diagnosed a fuel problem as a clogged filter, rather than a bad fuel pump which I managed to diagnose. I also figured out, via help on the internet, that the fuel shut-off solenoid was bad.

    Machine runs fine now. So my advice is to check the internet, before letting Poole charge you $870 for a two hour field visit. And you can find a perfectly fine aftermarket fuel pump for $20 rather than the $250 that Poole charges... and it arrives faster,
    Jacey Price profile picture
    Jacey Price
    21:04 05 Dec 24
    Need to teach a tech how to drive a service truck. Around 2:48 on highway 40 east, the truck pictured (plate ending in 8236) flew across 3 lanes of traffic to meet the Cleveland rd exit. Almost hit a semi and caused me to swerve with my children in the car. Glad making the exit was more important than children’s lives.
    David Lawrence profile picture
    David Lawrence
    13:04 22 Feb 24
    Brandon Pierce profile picture
    Brandon Pierce
    22:00 18 Feb 24
    Darin Noe profile picture
    Darin Noe
    01:17 16 Feb 24
    Jose Soto profile picture
    Jose Soto
    15:26 23 Sep 23
    Hunter Elliott profile picture
    Hunter Elliott
    16:17 07 Sep 23
    Rick Kelly-Crapse profile picture
    Rick Kelly-Crapse
    21:06 25 Aug 23
    They had all my parts for my 3208 Cat.
    Friendly folks at parts counter.