
Day in and day out, a SeaPro 40hp Outboard Gas Assist is a co-worker you can count on. With increased performance at lower rpm, SeaPro outboards are engineered to deliver more power with less engine stress. Every job has its share of surprises, but a SeaPro outboard won’t be one of them.
Pound for pound, it’s hard to beat the capabilities of Mercury 15 and 25hp SeaPro™ outboards. They’re calibrated for long hours of continuous commercial operation. Light and efficient, SeaPro outboards help you move more with less fuel, while delivering the power, speed and acceleration you need to keep your operations running on time.
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High-Output Alternator
An 18-amp alternator helps keep batteries charged and electronics humming throughout the workday.
Command Thrust Gearcase
Designed to sit lower in the water and turn larger props, the Command Thrust gearcase lifts heavy boats on plane more easily and holds them there at lower speeds without impacting top speed.
Electronic Fuel Injection (EFI)
From the moment you crank the engine to the moment you drop the throttle, EFI technology responds with instant power. Surefire starting in all weather conditions. Smooth, efficient acceleration. Maximum capability.
Convenient Maintenance
Spend less time on service and more time on the clock with our no-spill oil change system, easy-access fuel filter and color-coded maintenance touch points.
Advanced Tiller
The available Mercury tiller adapts to you, not the other way around. You can reverse the grip for left- or right-handed throttling and adjust the tiller angle laterally and vertically for better leverage and control.
Lightweight Performance
By minimizing weight at every opportunity, Mercury delivers a performance and efficiency boost to small boats.
High Torque
High-volume air intake boosts torque, for faster acceleration, while the high-displacement powerhead works less to move more, providing a longer service life.



By minimizing weight at every opportunity, Mercury delivers a performance boost to midsized boats.
With a choice of tiller or remote steering and compatibility with advanced SmartCraft® features such as Troll Control and Active Trim, you can optimize your engine for your needs.
Light and efficient, SeaPro outboards help you get more done on every drop of fuel. The engine is also optimized for 87 octane for further savings at the pump.
Proprietary alloys. Durable coatings. A convenient freshwater flush system. Mercury builds SeaPro outboards to be tough enough to handle the elements, no matter where the work takes you.
Specifications – 40 EFI
name
FourStroke 40
Horse power
40
Alternator amp / watt
18 amp/226 watt
Compatible with SmartCraft digital technology
–
Displacement (CID/CC)
60.8 CID / 995 cc
Dry weight *lightest model available
260 lbs / 118 kg
Engine type
Inline 4
HP / kW
–
Integrated fuel tank
–
Remote fuel tank standard (gal /L)
–
Starting
Electric (turn-key)
Trim Sy
Gas Assist / Power Tilt & Trim