Mercury 400 HP Verado V10 Electro-Hydraulic Steering Trim Tilt Extra Long Shaft Outboard Motor

The Mercury Verado 400 XL AMS DTS V10 is a 4-stroke outboard marine engine designed for premium yachts, large luxury boats, and multi-engine professional applications that require an extra-long shaft. It features a 350 HP / 257 kW, 5700 cc V10 (10 Cylinder) engine. The Verado series encompasses Mercury's most advanced outboard engines in the premium segment. It has been specifically developed for high-end yachts and large boats with its AMS (Advanced Mid Section) gearbox and electro-hydraulic steering system.

Verado 400 XL AMS DTS V10 Series Features and Technology Advantages

The electro-hydraulic steering system eliminates the need for mechanical cables, providing exceptional maneuvering precision and comfort. The AMS gearbox optimizes power transfer, improving fuel efficiency. Active Trim automatic trim management comes standard.

• V10 (10 Cylinder) Engine (5700 cc): Electro-hydraulic steering eliminates mechanical cables, providing exceptional maneuvering precision and comfort.
• Extra Long Shaft (572 mm (22.5")): Ensures the propeller operates at the optimum depth for the correct transom height.
• Electro-Hydraulic Steering: No mechanical cables—precise steering control and low steering effort.
• Electric Start: Instant engagement with a key or button—comfortable and quick starting.
• Electric Power Trim & Tilt: Adjust trim angle during navigation with a button—optimizes fuel efficiency; tilt allows lifting the engine completely up.
• External Floating Fuel System: Connection for a large capacity external tank—range determined by user needs.

Extra Long Shaft — What Boat Type Is It Suitable For?

The extra-long shaft (572 mm (22.5")) allows the propeller to operate at the correct water depth on large, high-sided fiberglass and aluminum boats. It is 64 mm longer than the standard long shaft (508 mm).

Technical Specifications

Who Is This Engine For?

• Premium yacht and luxury large boat: ultimate comfort with electro-hydraulic steering and AMS gearbox.
• Multi-engine configuration: consistent power delivery and DTS synchronization.
• Long-distance offshore cruising: Active Trim and automatic fuel management.
• Rental luxury yacht and charter: high reliability and low maintenance costs.

Maintenance and Longevity

4-stroke Mercury engines operate smoothly for many years with regular oil changes and end-of-season maintenance protocols. The impeller of the water-cooled system should be checked every 100 hours or every two seasons. Fresh water flushing is mandatory after every use in saltwater.

Related maintenance categories: Maintenance Kit | Engine Oil | Impeller | Mercury Spare Parts

Frequently Asked Questions

What is the main difference between the Verado series and standard FourStroke?

Verado offers an AMS (Advanced Mid Section) gearbox and an electro-hydraulic steering system. Its mechanical cable-free design provides more precise maneuvering and lower maintenance. DTS digital throttle and shift facilitate synchronization of multiple engines.

How does the electro-hydraulic steering system work?

The electro-hydraulic system transmits steering movement via an electronic signal to a hydraulic actuator. With no mechanical cable friction, it provides much lower steering effort and higher precision. In multi-engine applications, simultaneous rotation of the engines is automatically coordinated.

What does the Active Trim system do?

Active Trim automatically optimizes the trim angle using GPS speed and acceleration data. It eliminates the need for manual trim adjustment during speed changes—fuel consumption and cruising comfort are continuously optimized.

Which boat brands is the Verado 400 XL AMS DTS V10 compatible with?

Mercury outboard motors are compatible with many fiberglass, aluminum, and inflatable boat models thanks to their universal transom clamp or transom mounting system. The only criteria are your boat's transom height of 572 mm (22.5") and the maximum engine power approved by the manufacturer. You can share your boat model to get compatibility confirmation from Clever Marin.

Related Products and Categories

• Mercury Outboard Motors
• Mercury Marine Products
• Mercury Spare Parts
• Mercury Verado 175–400 HP
• Mercury Verado 350–500 HP
• Outboard Motors
• Boat Engines
• Maintenance Kit
• Impeller
• Anode

Is This the Right Configuration for Your Boat?

Share your boat model, transom height, and intended use—let's confirm together if the Mercury Verado 400 XL AMS DTS V10 engine is suitable for your boat and ensure the correct shaft selection.