Mercury / FourStroke
Mercury FourStroke 300hp
Mercury 4.6L V8 250 and 300hp FourStroke outboards deliver legendary performance and an all-around elevated boating experience.
All Mercury outboards

FourStroke
FourStroke 300hp
- Power
- 300 hp
- Configuration
- V8
- Displacement
- 4.6L
- Weight
- 527 lb
Authorized
dealer
View on Mercury site About this engine
Mercury 4.6L V8 250 and 300hp FourStroke outboards deliver legendary performance and an all-around elevated boating experience. Reliability. Comfort. Power. Handling. Easy ownership. Flexibility. For any body of water and across a wide variety of boats, every facet of a Mercury FourStroke outboard is engineered to ensure you make the most of your time on the water.
Key features
- You’re One Step Closer to Adventure
- Adaptive Speed Control
- Smooth and Quiet
- Easy to Maintain
- Ample Charging Output
- Industry-Exclusive Battery Management Technology
- FourStroke Performance Data
- Exceptionally Smooth & Quiet
- High Displacement
- Light & Compact
- FourStroke Advantage
- Comfort
- Durability
- Compact Design
- Efficiency
- SmartCraft® The Power to Do More
- Warranty & Maintenance
- Warranty Coverage
- Get the Latest Mercury News
- Find Your Manual
- Brochures
- Sign up for the Mercury Dockline Newsletter for news, promotions and more
Full specifications
- Horsepower
- 300
- Alternator amp / Watt
- 85 amp (1071 Watt) with Idle Charge
- Color
- Black / Cold Fusion White / Warm Fusion White / Pearl Fusion White
- Smartcraft Compatible
- Yes
- Displacement (L)
- 4.6L
- Dry weight *Lightest model available
- 527 lbs / 239 kg
- Engine type
- V8
- HP / kW
- 300 / 221
- Recommended fuel
- Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum



























