Mercury 350XXXL 350HP – Verado V10 35″ Shaft DTS Electric Start in Black

Mercury 350XXXL 350HP Verado V10 Ultra-Long

The Mercury 350XXXL Verado pairs a naturally aspirated 5.7L V10 with a 35-inch ultra-long shaft, built for the tallest transoms on the heaviest offshore center consoles and walkarounds. At 695 lbs, this DOHC powerhead delivers the displacement-driven torque and digital precision heavy multi-engine transoms need.

Peak output holds through 5800-6400 RPM, backed by a 150-Amp alternator. The 2.08:1 gear ratio holds that 5.7L torque curve steady on extreme hulls. Built in the USA, this engine pairs SmartCraft DTS with integrated electro-hydraulic power steering across deep ocean swells.

Technical Specifications of Mercury 350XXXL Verado

• The 5.7L V10 DOHC architecture delivers strong naturally aspirated displacement and low-end torque for extreme hulls.
• The 35-inch ultra-long shaft gives maximum propeller depth for the largest multi-engine offshore transoms.
• Integrated High-Output Electric/Hydraulic Power Steering offers responsive, automotive-like control.
• A 150-Amp alternator delivers 1890 Watts of charging power for electronics and stabilizers.
• SmartCraft Digital Throttle & Shift (DTS) removes mechanical friction for immediate helm control.
• NMEA 2000 and SmartCraft Gateway compatibility gives seamless engine data integration with digital helms.

Extreme 35-Inch Shaft Propulsion

The 35-inch ultra-long shaft is built for transom heights where a standard long-shaft motor would ventilate, keeping the prop biting through massive ocean swells.

5.7L V10 Naturally Aspirated Advantage

The 5.7L V10 leans on displacement rather than forced induction, favoring durability, low-end torque, and smooth power delivery on high-speed offshore runs.

SmartCraft DTS Digital Control

DTS removes the friction and maintenance of traditional cables, giving smooth shifting and fast throttle response for precise handling on the largest multi-engine vessels.

Mercury 3-Year Protection

Every Mercury 350XXXL 350HP Verado V10 carries a 3-year limited factory warranty with genuine parts through Mercury’s nationwide dealer network.

Maintenance & Longevity

Keeping the 8.0L wet sump lubrication system topped off preserves tight engine tolerances. Flush the cooling system with fresh water after every saltwater outing. Pro Tip from the Shop: on 35-inch shaft engines running in multi-engine setups, keep an eye on the NMEA Gateway for system-wide diagnostics and grease the steering tube regularly.