2025 Mercury Marine Mercury Diesel 6.7L 180 

Reliable. Easy to maintain. Integrated controls.

The mechanically fuel injected 6.7L Mercury Diesel engine sets a new benchmark for durability and reliability.

Features May Include:

Power & Torque

• The high-displacement turbocharged engine spools up massive torque, generating instantly responsive power to get big boats out of the hole and deliver a midrange punch when you need it.

Smooth & Quiet

• From vibration-dampening engine mounts to an air filter strategically positioned to also reduce turbo noise, the 6.7L engine is optimized for a smooth, quiet ride. 

Grid Heater

• The 6.7L engine is ready for all-season adventure, with a grid heater that makes cold weather starts easy.

Closed Cooling System

• A thermostatically controlled closed-loop freshwater cooling system protects the engine in both fresh and saltwater.

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.