ID # 26622114

Mercury - SeaPro 350

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SeaPro 200-350hp

 5.7L V10, 4.6L V8 and 3.4L V6

Every day, even in the toughest conditions, SeaPro high-horsepower outboards are built to tackle the biggest jobs. They feature heavy-duty components designed to work as hard as you do, with unmatched corrosion resistance to go wherever the task takes you.


Sale Type
Electric Start with SmartStart Protection
Engine Type
Trim System
Power trim and tilt
Shaft Length
20" / 508 mm 25" / 635 mm 30" / 762 mm 35" / 889mm
Gearcase Ratio
Displacement (L)
Full Throttle RPM
Alternator Amp / Watt
150 amp with Idle Charge
Displacement (CID/CC)
349 CID
Cylinder Configuration
V10 [64 degree] with Dual Overhead Cam [DOHC] and 40-valves
Dry Weight *Lightest Model Available
695 lbs / 316 kgs

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 decrease 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.


Exceptionally Smooth & Quiet

Precision-tuned intake and exhaust, combined with fuel-injector covers, minimize noise for more comfortable all-day operating. V8 and V6 models are 15-30% quieter than a leading four-stroke competitor, while the V10 model is 28% quieter at cruise than a leading competitor.

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

V10 and V8 SeaPro outboards boast class-leading displacement, while the 200hp SeaPro outboard features a brawny 3.4L V6 powerhead with plenty of muscle to get the job done.


seapro advantage

Efficient All-Around Performance: 

A host of efficiency-enhancing features such as Advanced Range Optimization (ARO), a closed-loop fuel system and a hydrodynamic gearcase optimize fuel economy so you can get more done on every tank.

Compact Flexibility:

 V10, 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.


 SeaPro outboards are calibrated to deliver full performance on 87-octane fuel, while a boat-mounted water-separating fuel filter kit helps prevent fuel-related issues.

High-Output Alternators:

 To help support a heavy load of onboard accessories, SeaPro outboards feature powerful alternators, including a 150-amp alternator on the 350hp engine.


SmartCraft. The Power to Do More.

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 more productive with SmartCraft.

Joystick Piloting for Outboards and Electric Steering

SeaPro outboards with the Advanced MidSection (standard on V10 350hp; available for V8 300hp) are compatible with Mercury Joystick Piloting for Outboards (JPO) for multi-engine applications as well as the latest Mercury Electric Steering system. JPO provides fingertip control to move forward, sideways or even rotate in place for easy, confident maneuvers in tight spaces. Electric Steering enhances handling and responsiveness for exceptional vessel control, particularly when using JPO. The Electric Steering system’s advanced power-saving design reduces power consumption by more than 50% over the previous electro-hydraulic steering system, leaving more power for running other onboard accessories.

Digital Throttle & Shift Controls

Standard with V10 and V8 AMS SeaPro outboards and available for V8 and V6 CMS SeaPro outboards, Digital Throttle & Shift (DTS) controls deliver smooth, quiet shifting and instant throttle response, with zero hesitation. With integrated SmartCraft technologies and an intuitive user interface, DTS can help make any job even easier.

Active Trim Mercury SeaPro 350

Active Trim can help you get the job done more efficiently by automatically trimming the engine. It simplifies boat operation while improving engine performance and decreasing fuel costs. Active Trim is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above; 2022 and newer, 25hp and above).

VesselView Mobile

With the VesselView Mobile® plug-and-play module, you’ll always know what’s happening under the cowling. It wirelessly connects your engine with a mobile app, making it easy to monitor engine data and track routine maintenance on a tablet or smartphone. VesselView Mobile is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above; 2022 and newer, 25hp and above).

Name Link
300hp Outboard Specifications Download
250hp Outboard Specifications Download
225hp Outboard Specifications Download
200hp Outboard Specifications Download