Mercury 350 V10 Verado Specifications
| Engine Model: Mercury Verado 350 V10 |
| Engine Type: 4-stroke 10-cylinder DOHC 40-valve gasoline outboard engine |
| Total Displacement: 349 cu.in (5.7 L) |
| Rated Engine Power: 350 Hp (257 kW) at 6400 rpm |
| Fuel System: Electronic Fuel Injection (EFI) |
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The Mercury Verado 350 V10 is defined by its
unique and potent foundation: a massive 5.7-liter V10 powerhead. This
substantial displacement generates immense, naturally aspirated torque,
providing instantaneous throttle response and the ability to
effortlessly propel heavy boats onto plane.
This power is delivered with a level of civility that redefines
expectations. Through its Advanced MidSection (AMS) and meticulous sound
engineering, the V10 is reported to be up to 40 percent quieter at
cruise speed than a competitor's 350 hp engine, creating a remarkably
serene onboard environment. This seamless integration of brute force and
refined manners is the hallmark of the V10 Verado.
It is fully equipped with SmartCraft technology, including Digital
Throttle and Shift (DTS), electro-hydraulic power steering, and features
like Adaptive Speed Control, which collectively deliver an effortless
and precise driving experience that instills confidence in any
condition.
Engine Type: V10 with a 64-degree bank angle, 4-stroke.
Valvetrain: Dual Overhead Camshafts (DOHC) with 40 valves.
Displacement: 5.7 Liters (349 Cubic Inches).
Bore and Stroke: 3.6 inches by 3.4 inches (92 mm by 86 mm).
Power Output: 350 Hp at the propeller shaft (257 kW).
Full Throttle Operating Range: 5800-6400 RPM.
Fuel Induction System: Computer-controlled Electronic Fuel Injection
(EFI) with Advanced Range Optimization (ARO) for enhanced fuel
efficiency.
Induction System: Naturally aspirated with a performance-tuned intake
manifold.
Ignition System: SmartCraft PCM Digital Inductive ignition.
Alternator Output: A high-output 150-amp alternator generates 1890 W,
providing substantial electrical power for modern onboard electronics
and battery charging.
Recommended Fuel: Unleaded Regular 89 Octane Minimum (R+M)/2 method (91
RON).
Engine Protection: The SmartCraft Engine Guardian system monitors
critical sensors and can automatically reduce power to prevent damage
from adverse operating conditions.
Starting System: Electric Start with SmartStart Protection, which
prevents starter motor engagement if the engine is already running.
Steering: Electro-hydraulic power steering, compatible with Joystick
Piloting for Outboards.
Trim System: Power trim and tilt.
The robust foundation of the Verado 350 V10 is central to its
performance and durability.
Cylinder Block: The engine is constructed around a massive 5.7-liter V10
block, a first for the outboard industry. This 64-degree V10
architecture, with its substantial displacement, is the primary source
of the engine's immense torque output, allowing it to work effortlessly
under heavy loads without a supercharger. Mercury engineers utilized
advanced computational fluid dynamics to optimize the block's design,
allowing for material removal without affecting strength or reliability,
thus managing weight effectively. The bore and stroke are configured at
3.6 inches (92 mm) and 3.4 inches (86 mm).
Cylinder Heads and Valvetrain: The engine features advanced cylinder
heads with Dual Overhead Camshafts (DOHC) operating a total of 40
valves. This configuration optimizes airflow into and out of the
combustion chambers, contributing significantly to the engine's power
output and efficiency across the entire RPM range.
The fuel system is designed for both responsive performance and
optimized efficiency. It utilizes a computer-controlled Electronic Fuel
Injection (EFI) system for precise fuel metering under all conditions.
A key feature is Advanced Range Optimization (ARO), a proprietary
calibration that seamlessly adjusts the fuel delivery during cruise
speeds to maximize fuel economy without any noticeable change in engine
operation, effectively extending the boat's range. The system is
calibrated to deliver full performance on readily available 89-octane
fuel, making it practical for extended voyages.
The engine is equipped with a reliable integrated wet sump lubrication
system. Routine maintenance is simplified by the Verado family's
industry-exclusive top cowl service door, allowing for effortless oil
level checks and top-ups without removing the engine cover.
Cooling is managed by a robust water-cooled system that draws in ambient
water. A thermostat regulates the engine's operating temperature for
optimal performance, fuel efficiency, and longevity. The system also
includes a freshwater flushing provision for easy maintenance after
operation in salt or brackish water. Exhaust gases are expelled through
the propeller hub, contributing to the quiet operation.
| Mid Section and Lower Unit |
Advanced MidSection (AMS): This signature Verado feature is a
sophisticated mounting system that cradles the powerhead on perimeter
mounts, moving the engine mounts outward and aft. This design isolates
the powerhead from the transom, dramatically reducing vibration and
noise transmission to the boat's hull for an exceptionally smooth and
quiet ride. Mercury claims this results in an engine that is up to 40
percent quieter at cruise than a leading competitor.
Gearcase and Ratio: The V10 features an all-new, precision hydrodynamic
gearcase, larger and longer than previous units, designed to maximize
lift and quickly bring large, heavy boats onto plane. It is available
with a deep 2.08:1 gear ratio to optimize low-end torque and
acceleration. A 1.75:1 ratio may be available depending on the specific
configuration. The gearcase diameter is 6.4 inches. It is matched with a
new Revolution X propeller.
Exhaust: The exhaust system is routed through the propeller hub, which
further contributes to noise reduction underwater and at the transom.
The Mercury 350 V10 Verado is equipped with a powerful electro-hydraulic
power trim and tilt system. This system allows the operator to precisely
adjust the engine angle for optimal boat performance, handling, and
shallow water operation.
Propeller selection is crucial for matching the engine's power to the
specific boat and its intended use. The Verado 350 V10 is designed to
work with Mercury's new Revolution X propeller, which features larger
diameter and wider blades to complement the new gearcase and deep gear
ratio for better handling and acceleration. The correct propeller must
allow the engine to operate within its 5800-6400 RPM full-throttle
range.
The specific pitch and diameter are determined by boat weight, hull
design, and application, with Revolution X propellers available in a
range from 18 to 33 inches of pitch. Mercury dealers and resources like
the Mercury Propeller Selector guide are used to determine the optimal
propeller for a given setup.
Shaft Length Options:
20 inches (508 mm)
25 inches (635 mm)
30 inches (762 mm)
35 inches (889 mm).
Dry Weight (Lightest Model): The lightest configuration of the Verado
350 V10 has a dry weight of 695 lbs (316 kg). This represents a minimal
weight gain over the previous supercharged V6 Verados it replaced.
Every 100 hours:
Change engine oil and replace the oil filter.
Check the outboard for tightness to the boat transom.
Inspect thermostat visually for corrosion and/or for a broken spring.
Check engine water separating fuel filter for contaminants.
Clean and/or replace filter.
Drain and replace gearcase lubricant.
Check power steering fluid.
Inspect battery.
Check wiring and connectors.
Every 300 hours:
Replace water pump impeller.
Check power trim fluid.
Replace high‑pressure in‑line fuel filter.
Replace spark plugs.
Replace accessory drive belt.
Propeller Nut: 55 lb-ft (75 Nm).
Gearcase Housing Bolts (3/8"): 35 ft-lb (47 Nm).
Lower Unit Mounting Studs: 40-50 ft-lb (54-68 Nm).
Spark Plugs: 20 ft-lb (27 Nm).
Powerhead Mounting Bolts: 25-30 ft-lb (34-40 Nm).
Offshore Fishing Boats: Provides the immense torque and reliability
needed for running to distant grounds in large center consoles and the
smooth operation desired by serious anglers. Luxury Center Consoles and
Dual Consoles: A perfect match for larger, high-end boats, delivering
exhilarating performance and quiet, comfortable cruising for families
and enthusiasts. Cruisers and Performance Boats: The substantial
displacement delivers the torque required to efficiently propel heavier,
beamier hulls.
Multi-Engine Installations: Commonly used in twin or triple
configurations on larger offshore vessels, sport-fishing rigs, and
catamarans. These setups benefit from joystick piloting compatibility,
allowing for intuitive maneuvering and station-holding capabilities.
Pontoon and Tritoon Boats: Provides the power and refinement for
top-of-the-line luxury pontoon boats, transforming their performance and
onboard experience.
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