Verado - 300-400hp

A Smooth Operator

The smooth, refined power of a V-8 4.6-liter powerhead delivers exhilarating acceleration and top speed to run offshore with confidence, while its generous displacement and robust design provide uncompromising durability and reliability. The Mercury-exclusive Advanced MidSection (AMS) and under-cowl noise management set the standard for smooth, quiet marine propulsion. These exciting new V-8 Verado outboards are wrapped in crisp, bold styling that makes an unmistakable statement on any transom.

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Engine Information and Specifications

Select Horsepower

400 400R 350 350 Pro FourStroke 300
Compare Outboard Motors
  • 400

    Engine Details

    The inherently balanced in-line six-cylinder engine and our Advanced Mid Section (AMS) with perimeter mounts virtually eliminate vibration in the boat. Perfect for sneaking up on fish or cruising on luxury pontoons.

    Specifications - 400

    HP / kW
    • 400 / 298
    Engine type
    • Inline 6
    MidSection
    • Advanced MidSection (AMS)
    Displacement (CID/CC)
    • 158.5 CID
    Displacement (L)
    • 2.6L
    Cylinder Configuration
    • Inline 6 with Dual Overhead Cam [DOHC] and 24-valves
    Full throttle RPM
    • 6200-6800
    Air induction
    • Supercharged with charge air cooling and electronic boost pressure control
    Fuel induction system
    • Sequential multi-port electronic fuel injection (EFI)
    Alternator amp / Watt
    • 70 amp / 882 watt (Belt-Driven)
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  • 400R

    Engine Details

    Setting a new standard in performance. The supercharged Verado 400R has enough power to quicken your pulse with an adrenaline rush. High-end finishes and top-of-the-line engineering allow you to experience rocket-like power like never before. Perfect for bass, deck, rigid hull inflatable, multi-species fish, offshore fishing, race and runabout boats, and pontoons, tritoons and catamarans.

    Specifications - 400R

    HP / kW
    • 400/298
    Engine type
    • Inline 6
    Displacement (L)
    • 2.6
    Full throttle RPM
    • 6400-7000
    Air induction
    • Supercharged with charge air cooling and electronic boost pressure control
    Fuel induction system
    • Sequential multi-port electronic fuel injection (EFI)
    Alternator amp / Watt
    • 70 amp / 882 watt (Belt-Driven)
    Recommended fuel
    • Unleaded 95RON minimum
    Recommended oil
    • SAE 25W-50 FC-W synthetic blend racing oil
    Engine protection operator warning system
    • SmartCraft Engine Guardian
    See All Specs
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  • 350

    Specifications - 350

    HP / kW
    • 350 / 257
    Engine type
    • Inline 6
    Displacement (L)
    • 2.6
    Full throttle RPM
    • 5800-6400
    Air induction
    • Supercharged with charge air cooling and electronic boost pressure control
    Fuel induction system
    • Sequential multi-port electronic fuel injection (EFI)
    Alternator amp / Watt
    • 70 amp / 882 watt (Belt-Driven)
    Recommended fuel
    • 91 Octane for premium performance in all applications (89 Octane compatible)
    Recommended oil
    • Mercury FourStroke 25W40 Marine Oil
    Engine protection operator warning system
    • SmartCraft Engine Guardian
    See All Specs
    Find a Dealer Today
  • 350 Pro FourStroke

    Engine Details

    Professional-grade performance. Refined driving experience. The high-performance Pro FourStroke. The ultimate combination of power and manners. Great for offshore fishing, bass, deck, pilot house boats, pontoons and tritoons.

    Specifications - 350 Pro FourStroke

    HP / kW
    • 350 / 257
    Engine type
    • Inline 6
    Displacement (L)
    • 2.6
    Full throttle RPM
    • 5800-6400
    Air induction
    • Supercharged with charge air cooling and electronic boost pressure control
    Fuel induction system
    • Sequential multi-port electronic fuel injection (EFI)
    Alternator amp / Watt
    • 70 amp / 882 watt (Belt-Driven)
    Recommended fuel
    • Unleaded Regular 87 Octane Minimum (R+M)/2 or 91 RON Unleaded 91 Octane or 95 RON for premium performance in all conditions 10% Ethanol Maximum
    Recommended oil
    • Mercury FourStroke 25W40 Marine Oil
    Engine protection operator warning system
    • SmartCraft Engine Guardian
    See All Specs
    Find a Dealer Today
  • 300

    Engine Details

    Lighter than its competition yet built to withstand the rigors of saltwater operation. For go-fast boats and commercial offshore operations that operate in rough seas or need more speed. Great for deck, inflatable rigid hull, inshore fishing, multi-species fishing, offshore fishing, and runabout cuddy boats, and tritoons.

    Specifications - 300

    HP / kW
    • 300 / 224
    Engine type
    • V8
    Displacement (CID/CC)
    • 279 CID
    Displacement (L)
    • 4.6L
    Cylinder Configuration
    • V8 [64 degree] with Dual Overhead Cam [DOHC] and 32-valves
    Full throttle RPM
    • 5200-6000
    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
    Recommended fuel
    • Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
    See All Specs
    Find a Dealer Today

TIME FOR A NEW OUTBOARD MOTOR?

Is your current boat ready for some new power? Don’t wait until your engine is worn out and not working. Today’s marine engines are more reliable than ever. With many outboard options on the market, it can be daunting to determine exactly what engine might be a right fit for your current boat.

Learn More
Making Boating Easier

Making Boating Easier

Available Active Trim makes boating easier and more enjoyable by automatically trimming your engines and simplifying boat operation while improving engine performance and decreasing fuel costs.

Boating Made Easy

Boating Made Easy

Docking and driving a boat is easier and more enjoyable than ever before.

Find out about the latest steering technologies.

 

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Take a deeper dive into what makes Mercury outboards stand apart with detailed information on each motor and the features that make them unique.

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