
Verado - 300-400hp
A Smooth Operator
The smooth, refined power of a V-8 4.6-liter powerhead delivers exhilarating acceleration and top speed to run offshore with confidence, while its generous displacement and robust design provide uncompromising durability and reliability. The Mercury-exclusive Advanced MidSection (AMS) and under-cowl noise management set the standard for smooth, quiet marine propulsion. These exciting new V-8 Verado outboards are wrapped in crisp, bold styling that makes an unmistakable statement on any transom.
Engine Information and Specifications
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Engine Details
The inherently balanced in-line six-cylinder engine and our Advanced Mid Section (AMS) with perimeter mounts virtually eliminate vibration in the boat. Perfect for sneaking up on fish or cruising on luxury pontoons.Specifications - 400
HP / kW - 400 / 298
Engine type - Inline 6
MidSection - Advanced MidSection (AMS)
Displacement (CID/CC) - 158.5 CID
Displacement (L) - 2.6L
Cylinder Configuration - Inline 6 with Dual Overhead Cam [DOHC] and 24-valves
Full throttle RPM - 6200-6800
Air induction - Supercharged with charge air cooling and electronic boost pressure control
Fuel induction system - Sequential multi-port electronic fuel injection (EFI)
Alternator amp / Watt - 70 amp / 882 watt (Belt-Driven)
Recommended fuel - Unleaded Regular 89 Octane Minimum (R+M)/2 or 93 RON Unleaded 91 Octane or 95 RON for premium performance in all conditions 10% Ethanol Maximum
Recommended oil - Mercury FourStroke 25W40 Marine Oil
Engine protection operator warning system - SmartCraft Engine Guardian
Compatible with SmartCraft digital technology - Yes
Starting - Electric Start with SmartStart Protection
Controls - Digital Throttle & Shift (DTS)
Steering - Electro-hydraulic power steering
- Joystick Piloting for Outboards
Shaft length - 20" / 508 mm
- 25" / 635 mm
- 30" / 762 mm
Gearcase ratio - 1.75:1
Dry weight *Lightest model available - 668 lbs / 303 kg
CARB star rating - 2
Bore and stroke - 3.23 in x 3.23 in / 82 mm x 82 mm
Ignition - SmartCraft Digital Inductive
Cooling system - Water-cooled with thermostat & pressure-controlled
Gear shift - F-N-R
Gearcase options - 5.44"
Trim system - SmartCraft programmable trim and tilt
Exhaust system - Through prop
Counter Rotation - Available
Color - Cold Fusion White
- Pearl Fusion White
- Phantom Black
- Warm Fusion White
Lubrication system - Integrated wet sump
Oil Capacity - 8.5 Quarts / 8.0 Liters
Maximum Trim Range - 20° (-6° to 14°)
Maximum Tilt Range - 73° (-6° to 67°)
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Engine Details
Setting a new standard in performance. The supercharged Verado 400R has enough power to quicken your pulse with an adrenaline rush. High-end finishes and top-of-the-line engineering allow you to experience rocket-like power like never before. Perfect for bass, deck, rigid hull inflatable, multi-species fish, offshore fishing, race and runabout boats, and pontoons, tritoons and catamarans.Specifications - 400R
HP / kW - 400/298
Engine type - Inline 6
Displacement (L) - 2.6
Full throttle RPM - 6400-7000
Air induction - Supercharged with charge air cooling and electronic boost pressure control
Fuel induction system - Sequential multi-port electronic fuel injection (EFI)
Alternator amp / Watt - 70 amp / 882 watt (Belt-Driven)
Recommended fuel - Unleaded 95RON minimum
Recommended oil - SAE 25W-50 FC-W synthetic blend racing oil
Engine protection operator warning system - SmartCraft Engine Guardian
Compatible with SmartCraft digital technology - Yes
Starting - Smart Start Electric
Controls - SmartCraft Digital
Steering - Electro-hydraulic power steering
Shaft length - 20" / 508 mm
- 25" / 635 mm
- 30" / 762 mm
Gearcase ratio - 1.75:1
Dry weight *Lightest model available - 668 lbs / 303 kg
Emissions Star Rating - 3
Gearcase options - 5.44"
Trim system - Power trim and tilt with SmartCraft programmable tilt
Counter Rotation - Available
Color - Phantom Black
- White
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Specifications - 350
HP / kW - 350 / 257
Engine type - Inline 6
Displacement (L) - 2.6
Full throttle RPM - 5800-6400
Air induction - Supercharged with charge air cooling and electronic boost pressure control
Fuel induction system - Sequential multi-port electronic fuel injection (EFI)
Alternator amp / Watt - 70 amp / 882 watt (Belt-Driven)
Recommended fuel - 91 Octane for premium performance in all applications (89 Octane compatible)
Recommended oil - Mercury FourStroke 25W40 Marine Oil
Engine protection operator warning system - SmartCraft Engine Guardian
Compatible with SmartCraft digital technology - Yes
Starting - Smart Start Electric
Controls - SmartCraft Digital
Steering - Electro-hydraulic power steering
Shaft length - 20" / 508 mm
- 25" / 635 mm
- 30" / 762 mm
Gearcase ratio - 1.75:1
Dry weight *Lightest model available - 668 lbs / 303 kg
CARB star rating - 2
Gearcase options - 5.44"
Trim system - Power trim and tilt with SmartCraft programmable tilt
Counter Rotation - Available
Color - Cold Fusion White
- Pearl Fusion White
- Phantom Black
- Warm Fusion White
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Engine Details
Professional-grade performance. Refined driving experience. The high-performance Pro FourStroke. The ultimate combination of power and manners. Great for offshore fishing, bass, deck, pilot house boats, pontoons and tritoons.Specifications - 350 Pro FourStroke
HP / kW - 350 / 257
Engine type - Inline 6
Displacement (L) - 2.6
Full throttle RPM - 5800-6400
Air induction - Supercharged with charge air cooling and electronic boost pressure control
Fuel induction system - Sequential multi-port electronic fuel injection (EFI)
Alternator amp / Watt - 70 amp / 882 watt (Belt-Driven)
Recommended fuel - Unleaded Regular 87 Octane Minimum (R+M)/2 or 91 RON Unleaded 91 Octane or 95 RON for premium performance in all conditions 10% Ethanol Maximum
Recommended oil - Mercury FourStroke 25W40 Marine Oil
Engine protection operator warning system - SmartCraft Engine Guardian
Compatible with SmartCraft digital technology - Yes
Starting - Smart Start Electric
Controls - SmartCraft Digital
Steering - Electro-hydraulic power steering
Shaft length - 20" / 508 mm
- 25" / 635 mm
Gearcase ratio - 1.75:1
Dry weight *Lightest model available - 635
CARB star rating - 2
Gearcase options - 4.8"
Color - Phantom Black
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Engine Details
Lighter than its competition yet built to withstand the rigors of saltwater operation. For go-fast boats and commercial offshore operations that operate in rough seas or need more speed. Great for deck, inflatable rigid hull, inshore fishing, multi-species fishing, offshore fishing, and runabout cuddy boats, and tritoons.Specifications - 300
HP / kW - 300 / 224
Engine type - V8
Displacement (CID/CC) - 279 CID
Displacement (L) - 4.6L
Cylinder Configuration - V8 [64 degree] with Dual Overhead Cam [DOHC] and 32-valves
Full throttle RPM - 5200-6000
Air induction - Performance-Tuned Long-Runner Intake Manifold
Fuel induction system - Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range Optimization
Alternator amp / Watt - 115-amp (1449 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 10W-30
Engine protection operator warning system - SmartCraft Engine Guardian
Starting - Electric Start with SmartStart Protection
Controls - Standard: Digital Throttle & Shift (DTS)
Steering - Integrated Electro-Hydraulic Power-Steering
Shaft length - 20" / 508 mm
- 25" / 635 mm
- 30" / 762 mm
Gearcase ratio - 1.75:1 / 1.85:1
Dry weight *Lightest model available - 600 lbs / 272 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
Color - Cold Fusion White
- Pearl Fusion White
- Phantom Black
- Warm Fusion White
Lubrication system - Integrated wet sump
Oil Capacity - 7.0 Quarts / 6.6 Liters
Maximum Trim Range - 20° (-6° to 14°)
Maximum Tilt Range - 73° (-6° to 67°)

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