Mercury 400CL 400HP – Verado V10 20″ Shaft Counter Rotation DTS in Black

Mercury 400CL 400HP Verado V10 DTS

The Mercury 400CL Verado pairs a naturally aspirated 5.7L V10 with a 20-inch counter-rotation shaft, built as the port-side companion for dual-engine high-performance center consoles. At 695 lbs, this DOHC powerhead is built for vibration-free running and the electrical capacity premium coastal rigs need.

Peak output holds through the 5800-6400 RPM range, backed by a 150-Amp alternator. The 2.08:1 gear ratio converts that 5.7L torque curve into strong hole-shot acceleration and top-end speed on high-performance hulls. Built in the USA, this engine pairs SmartCraft Digital Throttle & Shift (DTS) with integrated electro-hydraulic power steering across turbulent offshore swells.

Technical Specifications of Mercury 400CL Verado V10

• The 5.7L V10 40-valve DOHC architecture delivers strong naturally aspirated displacement and low-end torque.
• Integrated High-Output Electric/Hydraulic Power Steering offers responsive, automotive-like control for large offshore vessels.
• A 150-Amp alternator delivers 1890 Watts of charging power, among the highest in its class for electronics and gyrostabilizers.
• Counter-rotation left-hand drive keeps steering and tracking balanced in multi-engine offshore configurations.
• SmartCraft Digital Throttle & Shift (DTS) removes mechanical friction for immediate, responsive helm control.
• The naturally aspirated design skips forced induction for linear, predictable power delivery.

5.7L V10 Naturally Aspirated Power

The 5.7L V10 leans on displacement rather than forced induction, which is why power delivery stays smooth and predictable. That’s a real advantage for durability and low-end torque hauling heavy fuel loads offshore.

Integrated High-Output Power Steering

Mercury’s integrated electric/hydraulic power steering removes the external rams and hoses a traditional setup needs, giving effortless, precise control — valuable docking large multi-engine center consoles in crowded marinas or running high-speed coastal transits.

150A Industry-Leading Alternator

A 150-Amp alternator covers the electrical load of modern offshore boats running multiple displays, radar, and entertainment systems without draining the battery bank during long idles offshore.

Mercury 3-Year Protection

Every Mercury 400HP Verado V10 carries a 3-year limited factory warranty, with genuine parts available through Mercury’s nationwide dealer network.

High-Performance Offshore Match

This 20-inch counter-rotation V10 is the port-side power solution for large offshore center consoles and high-speed deep-V hulls, providing sustained thrust for coastal tidal flows with digital maneuverability.

Maintenance & Longevity

Keeping the 8.0L wet sump system topped off with clean oil preserves the V10’s tight tolerances, and the cooling system needs a fresh-water flush after every saltwater outing. Pro Tip from the Shop: use the Top Cowl Service Door for daily oil checks, and confirm the SmartCraft NMEA Gateway is communicating properly with the digital helm before high-speed runs.