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SeaPro - more power for the job

Advanced Range Optimisation (ARO) and closed-loop fuel control work together to precisely adjust the fuel mixture for optimal fuel economy. 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 300 HP CMS  SeaPro Specifications

HP / kW

300 / 224

MidSection

Advanced MidSection (AMS)

Engine type

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

Displacement (CID/CC)

279 CID

Displacement (L)

4.6L

Full throttle RPM

4800-5600

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

Yes

Starting

Electric Start with SmartStart Protection

Controls

Remote Mechanical or Digital Throttle & Shift (DTS)

Steering

Hydraulic (standard)

Power (optional)

Shaft length

20" / 508 mm

25" / 635 mm

30" / 762 mm

Gearcase ratio

1.75:1

Dry weight *Lightest model available

527 lbs / 239 kgs

CARB star rating

3

Bore and stroke

3.6 in x 3.4 in / 92 mm x 86 mm

Ignition

SmartCraft PCM 112 Digital Inductive

Cooling system

Water-cooled with thermostat

Gear shift

F-N-R

Gearcase options

5.44"

Trim system

Power trim and tilt

Exhaust system

Through prop

Counter Rotation

Available

Colour

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°)

Engine 1

Engine Make Mercury SeaPro
Displacement 4.6
Horse Power 300
Fuel Type Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
Drive Type Outboard
Stroke 4-Stroke

Downloads

200-300 HP SeaPro Mercury Outboard Brochure