SeaPro 200-300hp
3.4L V6 and 4.6L V8

Commercial calibration meets commercial duty cycles, delivering more power with less engine stress. Unmatched corrosion resistance starts with superior aluminum alloys and coatings, plus four serviceable anodes, including one in the cylinder block. All to deliver an engine that works as hard as you do.

Intuitive, Innovative Features
Adaptive Speed Control

Maintains a desired rpm regardless of changes in load or conditions without adjustments to the throttle level position - a first for the outboard industry. 

Exceptionally Smooth and Quiet

Tuned multi-chamber air intake minimizes airborne noise; fuel injector covers reduce high - frequency noise. 

Industry-Exclusive Battery Management Technology

When battery voltage decreases, the engine will automatically increase idle rpm to boost alternator output and recharge low batteries to the proper level, protecting operators from draining their battery while trolling.

Easy to Maintain

The exclusive Top Cowl Service Door simplifies routine maintenance, letting you check or add engine oil without removing the top cowl. Hour-based maintenance schedule decal is located under the cowl, providing a quick overview of routine maintenance.

Heavy Duty Gearcase

All V8 and V6 SeaPro outboards feature a heavy-duty gearcase validated at three times the lifespan of a recreational gearcase. The SeaPro gearcase was designed with easy maintenance in mind: Oil can be easily drained from the gearcase torpedo.

SeaPro Performance Data
Reliability & Durability

The V8 and V6 SeaPro outboards generate ample torque at lower rpm levels, enabling users to work their outboards hard without placing excess stress on the engine. 

Lightweight & Compact

Each 200 - 300hp SeaPro CMS (Conventional Midsection) outboard is the lightest engine in its class and is built to handle the demands of commercial applications. 

High Displacement

The 4.6L V8 225 - 300hp SeaPro outboards boast class-leading displacement, while the 200hp SeaPro features a brawny 3.4L V6 powerhead with plenty of muscle to get the job done.

V6 200hp SeaPro 15% MORE TORQUE
WEIGHT (lbs)
V6 200hp SeaPro
4.6L V8 300hp SeaPro CMS
Competitor 300hp
3.4L V6 200hp SeaPro
4.6L V8 300hp SeaPro CMS
Competitor 300hp
SeaPro Advantage

Light and Mighty: Less weight means more efficiency. The V6 200hp SeaPro is the lightest engine in its class. A combination of ample torque and less weight makes these outboards ideal for heavier loaded boats.

Maximum Durability: V8 and V6 SeaPro outboards feature a heavy-duty gearcase that is validated at three times the lifespan of recreational gearcase and slips easily through the water, decreasing workload on the engine. 

Reduced Fuel Cost: Advanced Range Optimization (ARO) and closed-loop fuel control on the V8 and V6 SeaPro outboards precisely adjust the fuel mixture for optimal fuel economy. 

Compact Flexibility: The V8 and V6 SeaPro outboards mount on 26-inch centers, making them ideal for a broad range of multi-engine applications and simple, seamless repower rigging. 

Engine Specifications by Horsepower
SmartCraft. Boating with a Higher IQ.

SmartCraft® is a full suite of digital technologies, fully integrated and totally coordinated. Gauges, sensors, vessel systems, computer-controlled features - one total package, one high level of control. Make your boating experience easier, safer, and a lot more enjoyable. Get smart. 

Joystick Piloting

300hp SeaPro AMS outboards are compatible with Joystick Piloting for Outboards. Joystick Piloting is designed and personalized for vessels powered by two to six SeaPro outboards. Mercury Joystick Piloting was the industry’s first joystick system for outboards and remains the best-selling marine joystick system. 

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VesselView Mobile

VesselView Mobile allows boaters to use a mobile device (smartphone or tablet) to connect with their Mercury outboard or sterndrive engine(s). The plug-and-play module connects via Bluetooth, providing quick, convenient access to your engine’s data. 

VesselView Mobile is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above).

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VesselView Mobile
Active Trim

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

Active Trim is compatible with all current SmartCraft-capable Mercury outboards (40hp and above).

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Active Trim
VesselView Link

VesselView Link integrates an existing multi-function display with Mercury engine(s) to place information and control at the driver’s fingertips. Its user interface is easy to navigate, and it integrates chart-plotter, sonar, radar and more into one display. 

VesselView Link is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above). 

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Get 5 Years Factory-Backed Coverage

Now is the perfect time to get ready for more fun and adventure on the water. Through March 31, you can get the standard 3-year limited warranty PLUS 2 years of factory-backed coverage when you purchase a new 2.5-400hp outboard. Offer valid at participating Mercury Authorized Dealers in the U.S. only. Exclusions apply.

Explore Our Other Engine Families

Mercury V8 and V6 Engines deliver what boaters once thought was impossible: Everything.
Learn More About V6/V8 Technology.


4.6L V8 AND 3.4L V6 175-300 HP FOURSTROKE


FourStroke is what every outboard wants to be: lightweight, fuel efficient, powerful and reliable. And there’s one to fit everything from pontoons and freshwater fishing to multi-engine offshore vessels.


4.6L V8 AND 3.4L V6 175-300HP PRO XS


The Pro XS has spent more than a decade blurring the line between consumer and high-performance outboards. It delivers unmatched speed, acceleration and reliability to bass, multispecies and sport boats.


4.6L V8 250-300HP VERADO


Smooth, quiet, vibration-free operation, coupled with standard power steering and Digital Throttle & Shift make for a level of comfort and a refined driving experience that are unrivaled in the industry.

Limited Warranty

World-class marine products backed by world-class warranties! We stand behind everything we build, and we go the extra mile to make sure your Mercury experience is the best it can be – on the water and off.

Mercury Product Protection

Mercury Product Protection is an extended service contract for your Mercury engine and MotorGuide trolling motor that covers certain expenses caused by defects in materials and workmanship after the Mercury Limited Warranty expires.


An exclusive Top Cowl Service Door on Mercury V8 and V6 SeaPro outboards simplifies routine maintenance, letting you check or add engine oil without removing the top cowl. The Top Cowl Service Door also houses the latch release and a carrying handle.  

A graphic, hour-based maintenance schedule decal is conveniently located under the cowl and provides a quick overview of routine maintenance intervals and a QR code to access additional information.  

Easy access: All maintenance points are color-coded and accessible by removing only the top cowl. 


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

The Best Products Have the Best Dealers

When you make the best marine products in the world, you want the best dealers behind them. That’s why we ensure that Mercury dealers are the best equipped to sell and service our products. Your Mercury Authorized Dealer is the best place to see and purchase Mercury engines as well as genuine Mercury Precision Parts and Accessories. And with thousands of dealers, you can rest assured we’re always close by and ready to help you go boldly.