SeaPro - more power for the job

Offers simple, seamless repower rigging. Engineered for commercial fishing vessels, commercial workboats and law-enforcement boats.

The new Mercury SeaPro V-8 and V-6 outboard models bring more of everything to the job—more displacement, more power, more efficiency and more durability. The impressive muscle of our new 4.6-litre V-8 and 3.4-litre V-6 powerheads is specifically designed for commercial duty and delivers our best-ever fuel economy. The combination of ample torque and low weight makes these engines ideal for heavily-loaded boats. Guaranteed to do its job, so you can do yours.

Mercury 250 HP SeaPro Specifications

HP / kW

250 / 186


Advanced Midsection (AMS)

Engine type

V8 [64 degree] with Dual Overhead Cam [DOHC] and 32-valves

Displacement (CID/CC)

279 CID

Displacement (L)


Full throttle RPM


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

Recommended fuel

Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum

Recommended oil

NMMA Certified FCW SAE 25W-40 (Optional 10W-30 for Cold Conditions)

Engine protection operator warning system

SmartCraft Engine Guardian

Compatible with SmartCraft digital technology



Electric Start with SmartStart Protection


Remote Mechanical or Digital Throttle & Shift (DTS)


Hydraulic (standard)

Joystick Piloting for Outboards

Power (optional)

Shaft length

20" / 508 mm

25" / 635 mm

30" / 762 mm

Gearcase ratio


Dry weight *Lightest model available

527 lbs / 239 kgs

CARB star rating


Bore and stroke

3.6 in x 3.4 in / 92 mm x 86 mm


SmartCraft PCM 112 Digital Inductive

Cooling system

Water-cooled with thermostat

Gear shift


Gearcase options


Trim system

Power trim and tilt

Exhaust system

Through prop

Counter Rotation



Phantom Black

Lubrication system

Integrated wet sump

Oil Capacity

7.0 Quarts / 6.6 Litres

Maximum Trim Range

20° (-6° to 14°)

Maximum Tilt Range

73° (-6° to 67°)

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300 - 300HP SeaPro Brochure