200-300hp

SeaPro – the right partner for the job

The new Mercury 200hp to 300hp SeaPro™ four-stroke outboards provide what you demand to get the job done – plenty of displacement, power, efficiency and durability. The impressive muscle of our new V-8 4.6-liter and V-6 3.4-liter powerheads is specifically designed for commercial duty and delivers our best-ever fuel economy. The one-two combination of ample torque and low weight makes these engines ideal for heavily loaded boats.

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Engine Information and Specifications

Select Horsepower

300 AMS 300 CMS 250 225 200
Compare Outboard Motors
  • 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
    • V8
    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
    See All Specs
    Find a Dealer Today
  • 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
    • V8
    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
    See All Specs
    Find a Dealer Today
  • 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
    • V8
    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
    See All Specs
    Find a Dealer Today
  • 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
    • V8
    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
    See All Specs
    Find a Dealer Today
  • 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
    • V6
    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
    See All Specs
    Find a Dealer Today

Mercury SeaPro engines excel in Thailand

Sakchai Homsub and his team are on the water 365 days a year, transporting tourists throughout the islands surrounding Pattaya, Thailand.

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Available with Joystick Piloting

Available with Joystick Piloting

Joystick piloting is available on V6 3.4L 200hp SeaPro outboards with Digital Throttle & Shift (DTS). In addition to easy joystick docking and maneuvering, the system allows you to hold a boat in position, hold its heading, or even hold its position and heading simultaneously.

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.

Calculate your fuel savings

Calculate your fuel savings

The Mercury Fuel Savings Calculator will allow you to easily calculate the possible fuel savings of a Mercury FourStroke SeaPro over a TwoStroke!

Choose how you use your boat, select the TwoStroke and FourStroke horsepower - and our tool will show your potential fuel savings. If you're looking to upgrade or add more power, you can even choose different FourStroke and TwoStroke horsepower options!

Calculate your fuel savings

Les moteurs SeaPro de Mercury Marine assurent la propulsion des bateaux dans des conditions extrêmes

SeaPro engines power boaters in harsh conditions

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

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TIME FOR A NEW OUTBOARD MOTOR?

Is your current boat ready for new power? Don’t wait until your engine is no longer working. With many outboard options on the market, identifying the best engine for your current boat can be daunting. Your authorized Mercury dealer can assess your current boat, discuss typical use and loads, determine which rigging and accessories you will need, and more.

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