Description

Mercury 300XL SeaPro Commercial 25″ EFI V8 4-Stroke Outboard Motor

The Mercury 300XL SeaPro Commercial 25″ EFI V8 4-Stroke Outboard Motor is a commercial-grade outboard engineered for operators who demand maximum durability, high torque, and dependable performance in the toughest marine environments. Designed for commercial fishing fleets, patrol boats, offshore workboats, passenger transport, and government agencies, the SeaPro series is built to withstand long operating hours with reinforced components, corrosion-resistant materials, and commercial-duty calibration.

Powered by Mercury’s 4.6-liter (279 CID) V8 DOHC 32-valve FourStroke engine, the 300XL produces 300 horsepower with exceptional acceleration and strong mid-range torque. Its Electronic Fuel Injection (EFI) system with Advanced Range Optimization (ARO) automatically adjusts fuel delivery for excellent fuel economy and responsive throttle performance. The 25-inch (XL) shaft configuration makes it ideal for offshore center consoles, commercial vessels, catamarans, and larger recreational boats. The engine is available with Digital Throttle & Shift (DTS) controls, features Power Trim & Tilt, and integrates with SmartCraft® technologies for advanced engine monitoring and diagnostics.

Specifications

• Engine Type: V8, DOHC 32-Valve, 4-Stroke
• Horsepower: 300 HP
• Displacement: 4.6 Liters (279 CID)
• Fuel System: Electronic Fuel Injection (EFI)
• Fuel Management: Advanced Range Optimization (ARO)
• Starting System: Electric Start with SmartStart Protection
• Ignition System: SmartCraft PCM Digital Inductive Ignition
• Shaft Length: 25″ (Extra-Long Shaft)
• Trim & Tilt: Power Trim & Tilt
• Controls: Digital Throttle & Shift (DTS)
• Steering: Electro-Hydraulic Steering
• Gear Shift: Forward, Neutral, Reverse
• Gear Ratio: 1.75:1
• Alternator Output: 115 Amps
• Recommended Full Throttle RPM: 4,800–5,600 RPM
• Fuel Type: Unleaded Gasoline (87 Octane Minimum)
• Oil Capacity: 7.0 Quarts (6.6 Liters)
• Approximate Dry Weight: 600 lbs (272 kg)

Key Features

• Commercial-duty 4.6L V8 FourStroke engine designed for extended operating hours.
• Electronic Fuel Injection (EFI) with Advanced Range Optimization for outstanding fuel efficiency.
• Heavy-duty SeaPro calibration delivers increased durability under continuous commercial use.
• Digital Throttle & Shift (DTS) provides smooth, precise, cable-free control.
• High-output 115-amp alternator supplies ample power for radar, navigation systems, pumps, and onboard electronics.
• SmartCraft® Engine Guardian continuously monitors and protects vital engine systems.
• Power Trim & Tilt enables precise engine positioning for optimal performance.
• Superior corrosion protection with premium marine-grade coatings and sacrificial anodes.
• Simplified maintenance with easy-access service points and integrated water-separating fuel filter.
• Compatible with SmartCraft® digital displays, Joystick Piloting (where applicable), and advanced vessel integration.

Ideal Applications

• Commercial fishing vessels
• Offshore workboats
• Patrol and law enforcement boats
• Search and rescue vessels
• Passenger transport boats
• Large center console boats
• Catamarans
• Heavy-duty recreational offshore boats

Why Choose the Mercury 300XL SeaPro Commercial?

The Mercury 300XL SeaPro Commercial is built for professionals who rely on their outboard every day. Its powerful 4.6L V8, commercial-grade engineering, high-output charging system, and advanced SmartCraft® technology deliver the durability, efficiency, and reliability needed for demanding marine operations. Whether you’re operating a commercial fishing vessel, supporting offshore work, or running a high-performance recreational boat, the Mercury 300XL SeaPro Commercial provides the power and long-term dependability expected from Mercury’s SeaPro lineup.

Mercury 300XL SeaPro Commercial. Mercury has calibrated its new V8 and V6 SeaPro outboards to generate ample torque at lower rpm levels, enabaling users to work their outboards hard without placing excess stress on the engine.