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Engine Information and Specifications

  •  300 CMS

    Engine Details

    Advanced Range Optimization (ARO) and closed-loop fuel control work together to precisely adjust the fuel mixture for optimal fuel economy. For commercial fishing vessels, commercial workboats and law-enforcement boats.

    Specifications - 300 CMS

    HP / kW
    • 300/224
    Engine type
    • V-8
    MidSection
    • Conventional MidSection
    Displacement (CID/CC)
    • 279 CID
    Displacement (L)
    • 4.6L
    Cylinder Configuration
    • V-8 [64 degree] with Dual Overhead Cam [DOHC] and 32-valves
    Full throttle RPM
    • 4800-5600
    Air induction
    • Performance-Tuned Long-Runner Intake Manifold
    Fuel induction system
    • Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range Optimization
    Alternator amp / Watt
    • 85-amp (1071 Watt) with Idle Charge
  •  300 AMS

    Engine Details

    Ideal for commercial fishing, commercial workboats and law-enforcement boats. Available with joystick piloting, electro-hydraulic power steering, and Mercury’s Advanced MidSection (AMS). The Advanced MidSection virtually eliminates vibration from being transmitted to the boat, while joystick piloting provides maximum control and maneuverability.

    Specifications - 300 AMS

    HP / kW
    • 300/224
    Engine type
    • V-8
    MidSection
    • Advanced MidSection (AMS)
    Displacement (CID/CC)
    • 279 CID
    Displacement (L)
    • 4.6L
    Cylinder Configuration
    • V-8 [64 degree] with Dual Overhead Cam [DOHC] and 32-valves
    Full throttle RPM
    • 4800-5600
    Air induction
    • Performance-Tuned Long-Runner Intake Manifold
    Fuel induction system
    • Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range Optimization
    Alternator amp / Watt
    • 115-amp (1449 Watt) with Idle Charge
  •  250

    Engine Details

    Offers simple, seamless repower rigging. Engineered for commercial fishing vessels, commercial workboats and law-enforcement boats.

    Specifications - 250

    HP / kW
    • 250/186
    Engine type
    • V-8
    MidSection
    • Conventional MidSection
    Displacement (CID/CC)
    • 279 CID
    Displacement (L)
    • 4.6L
    Cylinder Configuration
    • V-8 [64 degree] with Dual Overhead Cam [DOHC] and 32-valves
    Full throttle RPM
    • 4800-5600
    Air induction
    • Performance-Tuned Long-Runner Intake Manifold
    Fuel induction system
    • Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range Optimization
    Alternator amp / Watt
    • 85-amp (1071 Watt) with Idle Charge
  •  225

    Engine Details

    Mercury engineers strategically trimmed weight to produce some of the lightest engines in the class—by up to 30 pounds—and the powerhead configuration has been optimized to minimize size. Ideal for commercial fishing vessels, commercial workboats and law-enforcement boats.

    Specifications - 225

    HP / kW
    • 225/168
    Engine type
    • V-8
    MidSection
    • Conventional MidSection
    Displacement (CID/CC)
    • 279 CID
    Displacement (L)
    • 4.6L
    Cylinder Configuration
    • V-8 [64 degree] with Dual Overhead Cam [DOHC] and 32-valves
    Full throttle RPM
    • 4800-5600
    Air induction
    • Performance-Tuned Long-Runner Intake Manifold
    Fuel induction system
    • Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range Optimization
    Alternator amp / Watt
    • 85-amp (1071 Watt) with Idle Charge
  •  200

    Engine Details

    Commercial calibration allows the engine to reach maximum torque well below peak rpm—more power with less stress on the motor, making it the perfect motor for commercial fishing vessels, commercial workboats and law-enforcement boats.

    Specifications - 200

    HP / kW
    • 200/149
    Engine type
    • V-6
    MidSection
    • Conventional MidSection
    Displacement (CID/CC)
    • 209 CID
    Displacement (L)
    • 3.4L
    Cylinder Configuration
    • V-6 [64 degree] with Dual Overhead Cam [DOHC] and 24-valves
    Full throttle RPM
    • 4600-5400
    Air induction
    • Performance-Tuned Long-Runner Intake Manifold
    Fuel induction system
    • Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range Optimization
    Alternator amp / Watt
    • 85-amp (1071 Watt) with Idle Charge
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Harsh conditions can’t deter SeaPro

Harsh conditions can’t deter SeaPro

TowBoatUS and commercial boat builders turn to Mercury Marine’s SeaPro engines because they’re engineered to deliver longer engine life while maintaining the power and performance necessary to get the job done.

The Mercury Edge: Anti-corrosion protection

The Mercury Edge: Anti-corrosion protection

Mercury SeaPro four-stroke outboards offer superior protection against corrosion with the industry's lowest-copper aluminum alloy. And the life of critical components is extended with more stainless steel.

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