Mercury 400XXL 400HP Verado V10 30″ Shaft Outboard Motor

Mercury 400HP 400XXL Verado V10 Ultra Long Power

Technology driven and built upon a 5.7L V10 engine family, the Mercury 400HP 400XXL Verado serves as a high-torque solution for US offshore boaters requiring a prop-rated propulsion unit with superior thermal stability. This 400HP four-stroke technology utilizes a naturally aspirated 10-cylinder architecture and Advanced MidSection (AMS) to maximize mechanical efficiency and vibration dampening for large center consoles and high-freeboard vessels. The 30-inch ultra-long shaft design provides an optimized center of gravity for extreme transom heights, while the Digital Throttle and Shift (DTS) ensures immediate, reliable ignition across diverse coastal environments.

Operational longevity of the 400XXL Verado model is secured through a specialized pressurized lubrication system featuring a high-capacity gearcase to maintain internal cleanliness under extreme loads. To facilitate easy after-storage starts, the unit employs a performance-tuned multi-port EFI system paired with a 150A high-output alternator, while the Mercury XK360 alloy science utilizes a multi-layer finish to mitigate oxidation in high-salinity waters. With a 3-year/300-hour service interval and Electro-Hydraulic Power Steering, this fuel-efficient outboard provides superior ownership value for boaters seeking ultimate refinement and specialized vertical reach.

Key Features of Mercury 400XXL Verado

• 5.7L V10 40-Valve DOHC Engine Block
• 400.0HP Prop-Rated Output at 6400 RPM
• 30″ Ultra Long Shaft / 712 lbs Dry Weight Chassis
• Multi-Port Electronic Fuel Injection (EFI)
• Digital Remote Steering with Power Trim
• Advanced MidSection (AMS) Cradle System
• 2.08:1 Gear Ratio / 8.5qt Oil Capacity