Description

Read Before You Buy Mercury 350 HP ECT 6.2L Engine

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Mercury 350 HP ECT 6.2L Marine Engine For Sale

The Mercury MerCruiser 350 HP ECT 6.2L marine engine is a high-output V8 gasoline engine designed for compatible recreational boats, cruisers, performance vessels, and sterndrive applications. With a 6.2-liter displacement, 8-cylinder configuration, and 350 HP rated output, this marine engine provides substantial power for applications requiring strong acceleration, responsive performance, and reliable propulsion.

The engine features Multi-Point Electronic Fuel Injection (MPI) and Mercury SmartCraft engine control technology. Its V8 configuration delivers the power required for larger and performance-oriented boats while maintaining a marine-specific design for compatible inboard and sterndrive installations.

For boat owners replacing an existing engine or planning a repower, the Mercury 350 HP ECT 6.2L should be evaluated against the vessel’s existing engine, sterndrive system, mounting arrangement, electrical system, exhaust configuration, fuel system, and available engine-room space before ordering.

Mercury 350 HP ECT 6.2L Engine Overview

The Mercury 350 HP ECT 6.2L combines a 6.2-liter V8 gasoline engine with electronic fuel injection and SmartCraft engine management. Its 350 HP / 261 kW rated output provides substantial propulsion capability for compatible marine applications.

The 8-cylinder configuration and 6.2-liter displacement make this engine suitable for boat owners seeking a higher-output marine gasoline engine for replacement, repowering, or new installations.

The engine’s marine-specific configuration should be matched to the vessel’s propulsion system and installation requirements. Compatibility should always be confirmed before replacing an existing engine.

Key Features of the Mercury 350 HP ECT 6.2L

350 HP Marine Engine

The Mercury 350 HP ECT delivers a rated output of 350 HP / 261 kW, providing the power required for compatible high-performance recreational and cruising boats.

6.2-Liter V8 Configuration

The engine features an 8-cylinder V8 configuration with a 6.2-liter / 377 CID displacement. The V8 layout provides the high-output configuration expected from a 350 HP marine gasoline engine.

Multi-Point Electronic Fuel Injection

The Mercury 350 HP ECT uses Multi-Point Electronic Fuel Injection (MPI) to manage fuel delivery to the engine. Electronic fuel injection is an important part of the engine’s fuel-management and operating system.

Mercury SmartCraft Engine Control

The engine incorporates SmartCraft technology for electronic engine management and compatibility with supported Mercury marine systems and instrumentation.

Gasoline Marine Power

Unlike diesel-powered inboard engines, the Mercury 350 HP ECT 6.2L uses gasoline fuel, making it suitable for compatible gasoline-powered marine propulsion systems.

Sterndrive and Inboard Applications

The engine is designed for compatible sterndrive and inboard marine applications. The exact installation configuration and required components should be confirmed before ordering.

Mercury 350 HP ECT 6.2L Specifications

Specification	Details
Brand	Mercury
Model	350 HP ECT 6.2L
SKU	M8204
Category	Inboard Engines
Condition	New
Horsepower	350 HP
Fuel Type	Gasoline
Engine Type	V8
Displacement	6.2 L / 377 CID
No. of Cylinders	8 Cylinders
Stroke	3.75 in / 95.25 mm
Rated Output	261 kW / 350 HP
Dry Weight	391 kg / 862 lbs
Dimensions	813 mm × 762 mm × 559 mm
Fuel Injection	Multi-Point Electronic Fuel Injection (MPI)
Engine Control	SmartCraft
Application	Sterndrive / Inboard Marine

Mercury 350 HP Marine Engine Applications

The Mercury 350 HP ECT 6.2L can be considered for compatible vessels requiring high-output gasoline marine propulsion.

Potential applications include:

Recreational Boats

The 350 HP output provides substantial propulsion for compatible recreational boats where the engine and propulsion system are correctly matched.

Cruising Boats

The 6.2-liter V8 configuration can be evaluated for compatible cruising vessels requiring higher-output gasoline propulsion.

Performance Boats

The Mercury 350 HP configuration is suitable for compatible performance-oriented applications where the vessel and propulsion system are designed for this level of power.

Sterndrive Applications

The engine can be used in compatible sterndrive configurations when the required drive system, mounting arrangement, controls, and associated components are correctly matched.

Marine Engine Replacement

The Mercury 350 HP ECT 6.2L can be evaluated as a replacement for a compatible existing marine gasoline engine.

Boat Repowering

For repower projects, the complete propulsion system should be evaluated rather than selecting an engine based solely on horsepower.

Mercury 350 HP ECT 6.2L for Boat Repowering

Repowering a boat with a 350 HP marine engine requires careful consideration of the vessel’s existing propulsion system. An engine with the same or similar horsepower is not necessarily a direct replacement.

Before selecting the Mercury 350 HP ECT 6.2L for a repower, review the following:

• Existing engine model
• Existing horsepower
• Engine dimensions
• Engine mounting arrangement
• Engine-bed configuration
• Sterndrive compatibility
• Transmission or drive system
• Propeller specifications
• Shaft or drive alignment
• Exhaust configuration
• Cooling system
• Fuel system
• Electrical system
• Battery requirements
• Throttle and shift controls
• SmartCraft compatibility
• Instrumentation
• Available engine-room space
• Service clearance

A professional marine-engine installation should follow the applicable manufacturer installation requirements.

Mercury 350 HP ECT Installation and Compatibility

The listed engine dimensions are approximately 813 mm × 762 mm × 559 mm, with a dry weight of approximately 391 kg / 862 lbs.

These measurements provide a general reference when assessing the available engine compartment, but they should not be considered complete installation or mounting dimensions.

Engine Mounting

Verify the existing mounting arrangement, engine-bed dimensions, mounting points, and required clearances before installation.

Sterndrive Compatibility

For sterndrive applications, verify compatibility between the engine, drive unit, transom assembly, controls, and associated components.

Exhaust System

The existing exhaust system should be evaluated to ensure that it is appropriate for the replacement engine and installation configuration.

Cooling System

Cooling connections and the overall marine cooling arrangement should be checked against the specific engine configuration.

Fuel System

Because this is a gasoline marine engine, the vessel’s fuel delivery system, connections, filtration, and related components should be evaluated for compatibility.

Mercury 350 HP ECT Fuel and Injection System

The Mercury 350 HP ECT 6.2L uses gasoline fuel and Multi-Point Electronic Fuel Injection (MPI).

The electronic fuel-injection system controls fuel delivery to the engine and forms part of the engine’s overall electronic management system.

When replacing an existing gasoline marine engine, the boat’s fuel system should be inspected for compatibility with the replacement engine. Fuel connections, filtration, routing, and related components should be verified before installation.

Mercury SmartCraft Engine Control

The Mercury 350 HP ECT 6.2L uses SmartCraft engine control technology.

When installing this engine as part of a replacement or repower project, verify compatibility with the boat’s existing instrumentation, controls, displays, wiring, and other electronic components.

The ability to reuse existing controls or instrumentation should not be assumed without confirming compatibility with the specific engine configuration.

Mercury 350 HP ECT Engine Dimensions and Weight

The listed dry weight of the Mercury 350 HP ECT 6.2L is approximately:

391 kg / 862 lbs

The listed dimensions are:

813 mm × 762 mm × 559 mm

Before ordering, compare these measurements with the available engine-room space and consider additional clearance required for installation, maintenance, ventilation, exhaust routing, electrical connections, and other components.

What to Check Before Buying the Mercury 350 HP ECT

Before purchasing a Mercury 350 HP ECT 6.2L marine engine for a replacement or repower project, gather information about your existing boat and propulsion system.

Boat Information

Provide:

• Boat make
• Boat model
• Boat length
• Approximate vessel weight
• Intended use
• Existing propulsion type

Existing Engine Information

Record:

• Current engine brand
• Current engine model
• Current horsepower
• Engine dimensions
• Engine weight
• Existing drive or transmission
• Existing controls

Installation Information

Check:

• Engine compartment dimensions
• Mounting configuration
• Drive compatibility
• Exhaust arrangement
• Cooling connections
• Fuel-system configuration
• Electrical connections

Control and Electronics Information

Document the existing:

• Throttle controls
• Shift controls
• Instrument panel
• SmartCraft equipment
• Battery system
• Wiring
• Charging system

Providing these details can help determine whether the Mercury 350 HP ECT is appropriate for the intended application.

Why Choose to Buy Mercury 350 HP ECT 6.2L Engine?

The Mercury 350 HP ECT 6.2L combines a high-output V8 configuration with electronic fuel injection and SmartCraft engine control technology.

Its key specifications include:

• 350 HP rated output
• 6.2-liter displacement
• V8 configuration
• 8 cylinders
• Gasoline fuel
• Multi-Point Electronic Fuel Injection
• SmartCraft engine control
• 391 kg / 862 lbs dry weight
• Sterndrive and inboard marine applications

These characteristics make it an option for compatible boats requiring a higher-output gasoline marine engine.

Mercury 350 HP ECT Frequently Asked Questions

How much horsepower does the Mercury 350 HP ECT produce?

The Mercury 350 HP ECT 6.2L has a listed rated output of 350 HP / 261 kW.

What type of fuel does the Mercury 350 HP ECT use?

The engine uses gasoline.

How many cylinders does the Mercury 350 HP ECT have?

The engine has 8 cylinders in a V8 configuration.

What is the displacement of the Mercury 350 HP ECT?

The engine has a displacement of 6.2 liters / 377 CID.

Does the Mercury 350 HP ECT use fuel injection?

Yes. The listed configuration uses Multi-Point Electronic Fuel Injection (MPI).

What engine control system does the Mercury 350 HP ECT use?

The listed engine uses Mercury SmartCraft engine control technology.

How much does the Mercury 350 HP ECT weigh?

The listed dry weight is approximately 391 kg / 862 lbs.

What are the dimensions of the Mercury 350 HP ECT?

The listed dimensions are approximately 813 mm × 762 mm × 559 mm.

Is the Mercury 350 HP ECT suitable for boat repowering?

It can be considered for compatible repower projects, but the vessel’s existing engine, drive system, mounting arrangement, controls, fuel system, electrical system, exhaust, cooling, and available space must be evaluated before installation.

Can I reuse my existing drive system?

Do not assume that an existing sterndrive or related propulsion component can be reused. Compatibility should be verified for the specific engine and drive configuration.

Will the Mercury 350 HP ECT fit my existing engine compartment?

The listed dimensions can be used for an initial assessment, but complete installation compatibility requires checking mounting locations, clearances, drive configuration, connections, and service access.

Can I use my existing controls?

Existing controls should be checked for compatibility with the Mercury SmartCraft system and the specific engine configuration. Reusing existing controls should not be assumed without verification.

Order the Mercury 350 HP ECT 6.2L 350 HP Marine Engine

The Mercury 350 HP ECT 6.2L marine engine is designed for compatible applications requiring 350 HP of gasoline-powered marine propulsion.

Before ordering for a replacement or boat repower project, review the complete specifications and compare the engine with your existing propulsion system.

For compatibility assistance, provide your boat make and model, existing engine model, horsepower, drive or transmission information, and available engine-space dimensions.

Looking for a Mercury 350 HP marine engine? Review the specifications above and contact Mothix Marine Engines for information about this engine and other compatible marine power options.