Description

Mercury 300HP Outboard 300XL for Sale

Mercury 300HP Outboard | Remote Mechanical, Electric Start, 25″ Shaft | 300XL

The Mercury 300HP Outboard 300XL delivers exceptional V8 power, premium reliability, and outstanding fuel efficiency for boaters who demand maximum performance on the water. Built on Mercury’s proven 4.6L V8 FourStroke platform, this powerful outboard combines industry-leading technology, lightweight engineering, and legendary durability to create one of the most capable 300-horsepower outboards available today.

Whether you’re powering a center console, offshore fishing boat, bay boat, dual-console vessel, or recreational cruiser, the Mercury 300XL provides smooth acceleration, responsive handling, and dependable performance in all marine environments.

Key Features

• Mercury 300HP V8 FourStroke Engine
• 25-Inch X-Long Shaft
• Remote Mechanical Steering
• Smart Start Electric Starting
• Advanced Range Optimization
• Adaptive Speed Control
• Idle Charge Battery Management
• Electronic Fuel Injection (EFI)
• Power Trim & Tilt
• Mercury Marine 3-Year Warranty

Powerful 4.6L V8 Performance

At the heart of the Mercury 300XL is a naturally aspirated 4.6-liter V8 FourStroke engine engineered to deliver outstanding performance across the entire RPM range.

Performance advantages include:

• Strong hole-shot acceleration
• Exceptional mid-range torque
• Smooth high-speed cruising
• Superior offshore capability
• Excellent fuel economy
• Reliable long-distance performance

With 300 horsepower available instantly, the Mercury 300XL provides the confidence needed for offshore adventures, tournament fishing, and demanding recreational boating.

Advanced Range Optimization

Mercury’s Advanced Range Optimization technology continuously adjusts fuel delivery to maximize efficiency.

Benefits include:

• Reduced fuel consumption
• Extended cruising range
• Lower operating costs
• Improved offshore confidence
• Optimized engine performance

This intelligent system helps boaters travel farther while using less fuel.

Adaptive Speed Control

Adaptive Speed Control automatically maintains engine RPM regardless of changing load or water conditions.

Advantages include:

• Consistent cruising speeds
• Improved rough-water operation
• Better towing performance
• Enhanced throttle response
• Reduced operator workload

Whether encountering rough seas or executing tight turns, the Mercury 300XL maintains smooth and predictable power delivery.

Lightweight V8 Design

Mercury engineers designed the 300XL to be among the lightest engines in its class.

Engine Weight

• 538 lbs

Benefits of the lightweight design include:

• Improved boat balance
• Better fuel economy
• Faster acceleration
• Enhanced handling
• Reduced transom stress

The result is stronger overall performance without unnecessary weight.

Smart Charging Technology

The Mercury 300HP Outboard includes Mercury’s advanced Idle Charge battery-management system.

Charging Capacity

• 85-Amp Alternator
• 1,071-Watt Output

The charging system supports demanding electronics such as:

• GPS systems
• Multifunction displays
• Fish finders
• Live sonar units
• Radar systems
• Marine stereos
• Auxiliary battery banks

When battery voltage drops, the engine automatically increases idle speed to improve charging performance.

Electronic Fuel Injection (EFI)

Mercury’s Electronic Fuel Injection system ensures precise fuel delivery under all operating conditions.

Benefits include:

• Faster starts
• Smooth idling
• Improved throttle response
• Better fuel efficiency
• Reduced emissions
• Reliable performance

The EFI system works seamlessly with the advanced 32-valve DOHC induction system to maximize engine performance.

25-Inch X-Long Shaft Configuration

The 25-inch X-Long shaft is one of the most versatile options available for larger boats.

Ideal applications include:

• Offshore center consoles
• Tournament fishing boats
• Bay boats
• Walkaround boats
• Cruisers
• Commercial vessels

The longer shaft provides excellent propeller placement and improved performance in rough-water environments.

Built for Offshore Reliability

The Mercury 300XL is engineered for dependable operation in demanding marine conditions.

Reliability features include:

• Corrosion-resistant components
• Durable V8 architecture
• Advanced cooling systems
• Premium marine-grade materials
• Proven FourStroke technology

Mercury’s reputation for reliability makes the 300XL a trusted choice among professional captains and recreational boaters alike.

Smooth and Comfortable Operation

The Mercury 300HP FourStroke delivers a refined boating experience through:

• Reduced vibration
• Quiet operation
• Smooth throttle response
• Predictable handling
• Excellent low-speed control

Whether trolling, cruising, or running offshore, the engine provides outstanding comfort and confidence.

Technical Specifications

Engine Specifications

• Model: Mercury 300XL
• Engine Type: V8 FourStroke
• Horsepower: 300HP
• Cylinders: V8
• Displacement: 4.6 Liters
• Fuel System: Electronic Fuel Injection (EFI)
• Fuel Induction System: 32-Valve DOHC
• Full Throttle Range: 5200–6000 RPM
• Shaft Length: 25″ X-Long
• Steering: Remote Mechanical
• Starting System: Smart Start Electric
• Weight: 538 lbs
• Alternator: 85 Amp / 1,071 Watts

Trim & Tilt

• Maximum Trim Range: 20° (-6° to 14°)
• Maximum Tilt Range: 73° (-6° to 67°)

Standard Equipment

• Power Trim & Tilt
• Service Tool Kit & Parts
• Mounting Hardware
• Owner’s Manual

Additional Information

• Propeller Sold Separately

Warranty Protection

The Mercury 300HP Outboard 300XL includes Mercury Marine’s 3-Year Limited Factory Warranty, providing long-term peace of mind and dependable ownership.

Frequently Asked Questions

Is the Mercury 300XL a V8 engine?

Yes. The Mercury 300XL uses Mercury’s naturally aspirated 4.6L V8 FourStroke powerhead.

What shaft length does this model use?

This model features a 25-inch X-Long shaft configuration.

Does the Mercury 300XL include power trim and tilt?

Yes. Power Trim & Tilt is included as standard equipment.

What fuel system does the engine use?

The Mercury 300XL uses Electronic Fuel Injection (EFI) paired with a 32-valve DOHC induction system.

What is the engine weight?

The Mercury 300XL weighs approximately 538 pounds.

What warranty comes with the engine?

The engine is backed by Mercury Marine’s 3-Year Limited Factory Warranty.

Order the Mercury 300HP Outboard Today

The Mercury 300HP Outboard | Remote Mechanical, Electric Start, 25″ Shaft | 300XL delivers impressive V8 power, fuel-efficient performance, lightweight handling, and legendary Mercury reliability. Whether you are repowering an offshore fishing vessel or upgrading a recreational boat, the Mercury 300XL provides the strength, efficiency, and confidence needed to maximize every day on the water.