The high-displacement turbocharged engine spools up massive torque, generating instantly responsive power to get big boats moving and deliver a mid-range punch when you need it.
Diesel 6.7L (480-550hp)
480 - 550hp
Take your life on the water to new destinations with the Mercury Diesel 6.7L engine. This turbocharged workhouse redefines diesel performance for sport yachts and other large vessels, blending premium comforts and extended range with exceptional speed and acceleration.
Intuitive, innovative features
Power & torque
Closed cooling system
A thermostatically controlled closed-loop freshwater cooling system protects the engine in both fresh and saltwater.
Smooth & quiet
From vibration-dampening engine mounts to an air filter strategically positioned to also reduce turbo noise, the 6.7L engine is optimised for a smooth, quiet ride.
HPCR fuel injection
The high-pressure common rail (HPCR) fuel injection system fine-tunes the air-to-fuel ratio to enhance acceleration, top speed and efficiency.
Grid heater
The 6.7L engine is ready for all-season adventure, with a grid heater that makes cold weather starts easy.
Mercury diesel advantages
Easy ownership
Top-mounted fluid reservoirs, a self-draining oil filter and an easy-to-reach oil dipstick keep maintenance and service simple.
Reduced weight
With exceptional power-to-weight ratios, Mercury diesel engines pack big-time propulsion in a lightweight package. The difference: quicker acceleration, faster planing and easier handling.
Durability
Durability and reliability are in the details, like thermostatically controlled closed-cooling systems and advanced corrosion resistance. Our diesel engines are designed to go the distance.
Efficiency
Mercury diesel engines run clean and run easy, without the harshness or fumes from traditional diesels. They can also deliver up to 50% better fuel efficiency compared to gas engines of the same 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.
Specifications
Warranty coverage
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.
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Resources for you
Brochures
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Find yours
Learn more about Mercury diesel 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 Mercury diesel engine.