Mercury Outboard Engines

The Mercury SeaPro 500hp V12 is Mercury’s flagship commercial outboard, delivering a groundbreaking 500 horsepower from the world’s first V12 outboard design. This heavy-duty engine provides unmatched torque and endurance for the most demanding operations, while advanced innovations ensure smooth handling and efficient performance. Ideal for powering large offshore vessels and commercial boats, the 500hp SeaPro combines brute strength with refined technology to minimize downtime and maximize productivity.

• Massive 7.6-liter V12 powerhead delivers unparalleled torque, easily pushing heavy boats on plane and moving huge loads with authority.
• First-ever two-speed automatic transmission in an outboard – provides explosive acceleration in first gear for quick planing, then seamlessly shifts to second gear for smooth, efficient cruising (no shift clunk).
• Steerable electro-hydraulic gearcase – the engine’s lower unit pivots underwater (while the V12 powerhead remains fixed) for precise maneuvering in tight quarters and effortless handling at speed.
• Dual contra-rotating propellers harness the full 500hp, providing immediate thrust to power up heavy vessels, exceptional low-speed handling, and improved fuel economy at cruising throttle.
• Advanced MidSection (AMS) mounting cushions the V12, drastically reducing vibration and noise; the result is exceptionally smooth and quiet operation even at full power.

Key Features:

• High-Performance Engine: The 400R boasts a naturally aspirated 5.7-liter V10 engine with a 64-degree configuration and 40-valve dual overhead cam (DOHC) design, ensuring robust power and efficiency. ​

• Wide Open Throttle (WOT) Range: With a WOT RPM range of 6000-6600, the 400R offers a broad window for propping options, enhancing peak horsepower and performance.

• Fuel Efficiency: Designed to run optimally on readily available 87 octane fuel, the 400R incorporates Advanced Range Optimization, utilizing electronic sensors to precisely adjust the fuel mixture for maximum efficiency at all speeds. ​

• Adaptive Speed Control: This feature maintains engine RPM as load changes due to sea conditions or turning maneuvers, ensuring consistent boat authority with minimal control input. ​

• Charging Power: Equipped with a 150-amp alternator, the 400R delivers ample charging power to support onboard electronics and accessories. ​

• Digital Throttle & Shift: Provides smooth and precise control, enhancing the overall boating experience. ​

• Advanced MidSection (AMS): The Racing AMS features heavy-duty guide plates and stiffened engine mounts, stabilizing the engine for enhanced high-speed handling and durability. 

• Integrated Rear Tie-Bar Bracket: An optional rear tie-bar bracket is available, providing a strong, ultra-light mounting point for high-speed applications. ​

• Versatile Shaft Lengths: Offered in 20, 25, 30, and 35-inch shaft lengths to accommodate various boat configurations.

• Gearcase Options: Choose between the Sport Master or 5.44” HD gearcases, both featuring a gear ratio of 1.60:1, tailored for different boating needs. 

• Lightweight Design: With a dry weight of 695 lbs (315 kg), the 400R offers an impressive power-to-weight ratio, contributing to its exceptional performance.

The Mercury Verado 400hp V10 is a state-of-the-art outboard that delivers luxury-class performance for discerning boaters. With a naturally aspirated 5.7-liter V10 engine, this Verado offers lightning-fast acceleration, exceptional fuel efficiency, and the quietest operation in its class. You’ll experience silky-smooth power delivery thanks to Mercury’s advanced engineering, making the 400 V10 Verado ideal for high-end offshore boats and large recreational vessels where refined power and comfort are paramount.

• 5.7L V10 powerhead delivering 400hp effortlessly – provides immense torque and thrilling mid-range acceleration for instant response.
• Advanced MidSection (AMS) mounting and noise-dampening design – virtually eliminates vibration and significantly reduces noise, even at high RPM, for an unmatched smooth and quiet ride.
• Digital Throttle & Shift (DTS) – provides instant, ultra-smooth shifting and throttle response, with optional electric steering for precise control on multi-engine setups.
• Adaptive Speed Control – automatically maintains engine RPM despite changes in load or sea conditions, ensuring steady power through large swells and during sharp turns without manual throttle adjustments.
• Advanced Sound Control – an exclusive feature allowing you to toggle between whisper-quiet operation or a sportier growl at idle, tailoring the engine’s sound to your preference.

The Mercury SeaPro 300hp V8 AMS is a rugged commercial-grade outboard designed for high-output performance and minimal downtime. Powered by a 4.6-liter V8 engine, it delivers 300 horsepower with incredible torque, enabling heavy vessels to operate with ease even under load. Featuring Mercury’s Advanced MidSection (AMS) mounting for reduced vibration, along with an array of reinforced components, the 300 SeaPro offers an ideal balance of power, smoothness, and efficiency – perfect for professional crews spending long hours on the water.

• 4.6L V8 SeaPro engine (commercially tuned) provides high torque at lower RPM for a reliable 300hp output all day long.
• Advanced MidSection (AMS) mounting – cradles the engine and drastically cuts vibration and noise, improving crew comfort and reducing stress on the boat.
• Heavy-duty gearcase – validated at 3× the lifespan of recreational models, built to withstand continuous high-thrust operation in commercial service.
• High-capacity 85 Amp alternator with Idle Charge – plenty of charging power for onboard electronics and automatically boosts output at idle to maintain battery health.
• Maintenance-friendly design – top cowl service door for quick oil checks and extended service intervals mean more time on the water and less in the shop.

The Mercury SeaPro 250hp is a robust 4.6-liter V8 outboard built for commercial reliability and power. Producing 250 horsepower with ease, this engine provides the torque and durability needed for demanding operations, yet it remains one of the lightest and most fuel-efficient in its class. Constructed with heavy-duty components and designed for easy maintenance, the SeaPro 250 works hard every day – ideal for mid-sized workboats and commercial fishing vessels where consistent power and low operating costs are paramount.

• 4.6L V8 SeaPro engine (250hp) – its large displacement delivers more torque and less strain, extending engine life under commercial duty cycles.
• Class-leading displacement & tough build – provides excellent mid-range punch for hauling heavy loads and fast acceleration when boats are loaded down.
• Reinforced components & gearcase – engineered to withstand harsh conditions and continuous operation with minimal maintenance, exceeding typical 250hp demands.
• Excellent power-to-weight ratio – lighter than many competitor models, improving boat handling and saving fuel for the operator.
• Superior corrosion protection & filtration – multi-layer coatings and high-capacity filters safeguard the engine in tough marine environments, ensuring reliable daily performance.

The Mercury SeaPro 225hp is a rugged V8 outboard that packs big-block performance into a 225hp package for commercial applications. With its 4.6-liter V8 displacement – unparalleled in the 225hp class – the SeaPro 225 delivers exceptional torque and reliability. It’s engineered to thrive under heavy workloads, making it ideal for service boats and mid-sized commercial vessels that demand consistent power, low maintenance, and Mercury’s proven durability.

• 4.6L V8 (225hp) – class-leading displacement provides more thrust and easier engine operation under heavy loads, extending engine life.
• Reduced max RPM (4800–5600) – a lower full-throttle range decreases internal stress and fuel consumption, specifically tailored for commercial duty cycles.
• Reinforced build & corrosion protection – heavy-duty components and multi-layer coatings allow daily use in harsh conditions with minimal wear.
• 85 Amp alternator with Idle Charge – high-output alternator supports onboard electronics and charges batteries even during long idle periods by automatically boosting output as needed.
• Quick service & support – top oil-check door and Mercury’s global service network minimize downtime and give commercial operators peace of mind.

The Mercury SeaPro 200hp is a compact yet highly capable V6 engine, featuring a brawny 3.4-liter V6 that punches above its weight in commercial performance. At 200 horsepower, this engine offers outstanding low-end torque and reliable operation, making it ideal for smaller commercial boats and heavy-duty RIB inflatables. It’s the lightest in its class, yet built tough with SeaPro-grade components to endure daily use – delivering efficiency and dependability that keep your operations running smoothly.

• 3.4L V6 (200hp) – high displacement for the 200hp class ensures superior torque and quick planing, even when carrying heavy loads.
• Lightest in class – lightweight design improves fuel efficiency and handling on smaller vessels without compromising on toughness or longevity.
• Commercial-grade build – reinforced parts and gearcase, tested beyond recreational limits, guarantee long life and reliability in daily service.
• Adaptive Speed Control – maintains steady RPM despite changes in load or waves, providing consistent power for work tasks with no loss of momentum.
• Fuel-efficient & 87-octane tuned – optimized EFI and regular-fuel calibration help lower fuel costs, which is critical for fleet operators.

The Mercury SeaPro 150hp is a proven workhorse outboard, utilizing a 3.0-liter inline-4 that’s engineered for durability and efficiency. With 150 horsepower, it provides ample power for a wide range of boats while boasting one of the lowest weights in its class. Sturdy, straightforward, and fuel-efficient, the SeaPro 150 is favored by commercial operators for its low maintenance needs and unwavering performance – whether powering a water taxi, a small fishing boat, or serving as twin engines on a larger vessel, it gets the job done reliably.

• 3.0L inline-4 (150hp) – large displacement for this class ensures high torque and strong acceleration under load.
• Built for long life – ultra-rugged upper mounts (twice as stiff as recreational models) and a reinforced midsection withstand continuous daily use.
• Excellent power-to-weight – significantly lighter than most competing 150hp engines, improving boat handling and saving fuel.
• Reliable all-day operation – runs on regular 87-octane fuel with modern EFI for smooth performance and low emissions throughout the day.
• Flexible and versatile – ideal as a single engine for mid-sized boats or in twin configuration, providing versatility and Mercury’s proven reliability for a wide range of needs.

The Mercury SeaPro 115hp is a mid-range champion, delivering 115 horsepower in a compact and lightweight design ideal for commercial needs. Its 2.1-liter inline-4 engine packs more displacement than most 115hp outboards, translating into strong acceleration and efficiency. Weighing significantly less than competing models, the SeaPro 115 improves handling and fuel savings – especially important for quick planing. Renowned for its reliability and low maintenance, this 115hp outboard is a favorite for powering a variety of boats from fishing rigs to small workboats.

• 2.1L inline-4 (115hp) – higher displacement ensures brisk throttle response, punchy acceleration, and excellent pulling power for its class.
• Up to 9 kg lighter than similar 115hp engines – lower weight improves stability, agility, and fuel economy on the boat.
• Command Thrust option – available with a larger gearcase and prop, providing ~20% more thrust for heavier boats and pontoons (faster planing under load).
• SmartCraft compatible – enables integration with digital gauges and optional Active Trim for automatic trim optimization, boosting efficiency and convenience.
• Very quiet & smooth – optimized design makes the SeaPro 115 up to 30% quieter at cruise than competitors, ensuring comfort on long runs.

The Mercury 90 SeaPro delivers 90HP of output in a durable, lightweight package ideal for a wide range of commercial boats. Its 2.1L 4-cylinder engine outclasses rivals with up to 20% more torque, giving quicker planing especially on loaded vessels. The Mercury 90 features EFI for reliable starts and consistent power, and it’s SmartCraft-compatible for advanced controls. Weighing ~165 kg, it’s among the lightest in its class, improving boat performance and fuel efficiency.

• 2.1 L displacement – class-leading torque and acceleration from midrange through top speed
• Lightweight design (~165 kg) – lower weight for better balance and efficiency on the boat
• Command Thrust option – heavy-duty gearcase model with larger prop for pontoons & heavy boats
• SmartCraft compatible – supports Active Trim, digital gauges, and joystick steering integration
• Commercial reliability – reinforced components and extended warranty for professional use