Description

Mercury 300HP Outboard 300L for Sale

Mercury 300HP Outboard | Remote Mechanical, Electric Start, 20″ Shaft | 300L

The Mercury 300HP Outboard 300L delivers exceptional V8 FourStroke performance, combining industry-leading power, advanced fuel efficiency, and legendary Mercury reliability. Built around Mercury’s proven 4.6-liter V8 platform, the 300L is designed for boaters who demand uncompromising acceleration, smooth operation, and dependable offshore capability.

Whether powering a center console, offshore fishing boat, performance vessel, bay boat, or recreational cruiser, the Mercury 300L provides the perfect combination of horsepower, fuel economy, and long-term durability. Its 20-inch shaft configuration makes it an excellent option for a wide range of standard-transom boats requiring maximum performance and versatility.

For boat owners searching for a Mercury 300HP Outboard for sale, the Mercury 300L remains one of the most respected and capable outboard engines available today.

Key Features

• 300HP Mercury V8 FourStroke Engine
• 4.6L Naturally Aspirated V8 Powerhead
• Advanced Range Optimization
• Adaptive Speed Control
• Smart Charging Technology
• Smart Start Electric Starting
• Remote Mechanical Steering
• Power Trim & Tilt
• 20-Inch Long Shaft Configuration
• Mercury Marine 3-Year Warranty

Powerful 4.6L V8 FourStroke Performance

At the heart of the Mercury 300L is Mercury’s advanced 4.6-liter naturally aspirated V8 engine.

Performance benefits include:

• Exceptional low-end torque
• Rapid hole-shot acceleration
• Strong mid-range power
• Impressive top-end speed
• Smooth throttle response
• Reliable long-term performance

The large-displacement V8 platform delivers the muscle required for larger boats while maintaining outstanding efficiency.

Advanced Range Optimization

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

Advantages include:

• Longer cruising range
• Reduced fuel consumption
• Improved operating efficiency
• Lower ownership costs
• Enhanced offshore capability

This intelligent system helps boaters spend more time on the water and less time refueling.

Adaptive Speed Control

Adaptive Speed Control automatically maintains selected engine RPM regardless of changing conditions.

Benefits include:

• Consistent cruising performance
• Improved rough-water handling
• Better watersports operation
• Enhanced low-speed control
• Reduced throttle adjustments

Whether crossing offshore swells or towing skiers, the system keeps the engine operating smoothly.

Smart Charging Technology

The Mercury 300L features Mercury’s advanced Idle Charge battery-management system.

Charging Specifications

• 85-Amp Alternator
• 1,071-Watt Output
• Automatic Idle Charge Function

The charging system supports:

• GPS units
• Radar systems
• Fish finders
• Chartplotters
• Live sonar equipment
• Marine audio systems
• Auxiliary batteries

When battery voltage drops, the engine automatically increases idle RPM to improve charging output.

Lightweight V8 Design

Mercury engineers focused on reducing weight without sacrificing durability or performance.

Benefits include:

• Faster acceleration
• Better fuel economy
• Reduced transom load
• Improved vessel balance
• Enhanced overall handling

At only 527 pounds, the Mercury 300L is among the lightest 300HP V8 outboards in its class.

20-Inch Shaft Configuration

The Mercury 300L utilizes a 20-inch shaft designed for boats with standard transom heights.

Advantages include:

• Broad boat compatibility
• Easier repower installations
• Improved handling characteristics
• Excellent performance balance
• Versatility across multiple vessel types

This configuration is especially popular among center consoles, bay boats, and high-performance fishing boats.

Offshore Reliability

The Mercury 300L is built to thrive in demanding marine environments.

Features include:

• Corrosion-resistant materials
• Heavy-duty marine construction
• Advanced EFI technology
• Proven V8 architecture
• Exceptional durability

Whether fishing offshore, cruising coastal waters, or running long distances, the engine delivers reliable performance.

Smooth and Quiet Operation

Mercury’s V8 FourStroke platform offers a premium boating experience.

Owners enjoy:

• Reduced vibration
• Quiet cruising
• Smooth throttle transitions
• Comfortable operation
• Lower operator fatigue

These refinements make every trip more enjoyable.

Ideal Boat Applications

The Mercury 300L performs exceptionally well on:

• Center Consoles
• Offshore Fishing Boats
• Bay Boats
• Performance Boats
• Walkaround Boats
• Coastal Cruisers
• Sportfishing Vessels
• Recreational Boats

Its versatility makes it one of Mercury’s most popular high-horsepower outboards.

Technical Specifications

Engine Specifications

• Model: Mercury 300L
• 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: 20″ Long
• Steering: Remote Mechanical
• Starting System: Smart Start Electric
• Weight: 527 lbs
• Alternator: 85 Amp / 1,071 Watts with Idle Charge

Trim & Tilt

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

Standard Features

• Advanced Range Optimization
• Adaptive Speed Control
• Smart Charging Technology
• Power Trim & Tilt
• Service Tool Kit & Parts
• Mounting Hardware
• Owner’s Manual

Additional Information

• Propeller Sold Separately

Warranty Coverage

The Mercury 300L Outboard is backed by Mercury Marine’s 3-Year Limited Factory Warranty, providing dependable protection and peace of mind for years of boating adventures.

Frequently Asked Questions

Is the Mercury 300L suitable for offshore fishing?

Yes. Its powerful V8 engine, excellent fuel efficiency, and proven reliability make it ideal for offshore applications.

What boats are best suited for the Mercury 300L?

Center consoles, offshore fishing boats, bay boats, performance boats, and cruisers are excellent matches.

Is the Mercury 300HP fuel efficient?

Absolutely. Advanced Range Optimization and EFI technology help maximize fuel economy while maintaining strong performance.

Does the Mercury 300L include Power Trim & Tilt?

Yes. Power Trim & Tilt comes standard.

What shaft length does the Mercury 300L use?

The Mercury 300L features a 20-inch long shaft configuration.

What warranty is included?

The engine includes Mercury Marine’s 3-Year Limited Factory Warranty.

Order the Mercury 300HP Outboard Today

The Mercury 300HP Outboard | Remote Mechanical, Electric Start, 20″ Shaft | 300L combines powerful V8 FourStroke performance, advanced fuel-saving technologies, exceptional reliability, and premium handling. Whether you’re upgrading an offshore fishing vessel, powering a performance boat, or repowering a family cruiser, the Mercury 300L delivers the power, efficiency, and confidence serious boaters expect from Mercury Marine.