The multi-point electronic fuel injection system fine-tunes the air-to-fuel ratio for the ideal combination of power and efficiency.
MerCruiser Inboards 8.2L
375 - 425hp
Bring on big adventures. Bring along the whole crew. The MerCruiser® 8.2L engine is capable of powering oversized inboard boats through even the toughest waters. Efficient, quiet and smooth, it is the perfect partner for unforgettable moments on the water.
Intuitive, innovative features
Advanced MPI
Ample charging output
A powerful alternator delivers 65 amps of charging power at wide-open throttle – perfect for keeping onboard electronics running long into the fun.
Adaptive Speed Control
The Adaptive Speed Control feature lets you maintain engine rpm despite changes in load or conditions. Climbing large swells is easier. Cruising at low speeds is smoother. Carving out tight turns is effortless.
Engine guardian
Explore farther with confidence knowing that the engine guardian system is at work. It monitors the engine and, if necessary, can adjust engine functions to help get you home safely.
SeaCore
Take on the toughest marine conditions with the available SeaCore® system. It is an entire package of durable, corrosion-fighting technology that offers an extraordinary level of protection, including hard-coat anodisation on the drive, stainless-steel fasteners and components, and a closed cooling system.
MerCruiser performance data
Smooth performance.
Vibration-dampening engine mounts and lower-rpm performance smoothen your ride and enhance your time on the water. So all you will feel is the power.
Exceptional fuel economy
At cruising speeds, the engine barely breaks a sweat, providing a major boost in efficiency. Plus, MerCruiser engines also deliver full performance on 87-octane fuel for additional savings at the pump.
Powerful torque
V8 big-block power generates exactly what thrill-seekers crave: tons of torque to get heavy boats moving or launch tow sports riders to their feet.
MerCruiser advantages
Noise reduction
Hear your friends and family talk. Hear yourself think. Enjoy your time on the water. A MerCruiser engine is still as powerful as ever. Thanks to sound-dampening advancements, it is just not so loud about it.
Performance
High-displacement engines and multi-port fuel-injection systems maximise the performance from every drop of fuel. You will enjoy quick acceleration, instantly responsive power and total fun.
Effortless ownership
A redesigned engine access has simplified what was once a hassle, bringing all service points to a single easily reachable location, colour-coded for owner-friendly maintenance.
Durability
Through gruelling endurance test cycles – in the lab and on the water – Mercury has refined every MerCruiser engine into an unflinching workhorse, built with better alloys and superior paints that can stand up to the harshest conditions.
Engine specifications by horsepower
SmartCraft® The power to do more
SmartCraft® is a full suite of digital technologies, fully integrated and totally coordinated. Gauges, sensors, vessel systems, computer-controlled features – one total package, one high level of control. Make your boating experience easier, safer and a lot more enjoyable.
Warranty and maintenance
Warranty coverage
Mercury makes world-class marine products backed by world-class warranties.
Maintenance
At Mercury, we make maintenance easy. Learn more about how to keep your Mercury products performing at their peak.
Get the latest Mercury news
Sign up for our email list to be among the first to hear the latest Mercury product updates and news.
Learn more about MerCruiser engines at a Mercury dealer
No one understands marine performance like your local Mercury authorised dealer. Contact a dealer today to learn how you could power your adventures with a MerCruiser engine.