Mercury Diesel QSD common rail or electronic injection fuel systems provide increased power-to-weight ratios, cleaner starts and less noise for a superior boating experience.
The QSD line of engines are built lightweight, compact and provide increased power for impressive acceleration, throttle response and quicker planing times.
QSD engines are compatible with SmartCraft electronics, SeaCore corrosion protection, Axius joystick control systems and Mercury's effortless Digital Throttle & Shift systems.

Exceptional performance
The proven high-pressure common-rail fuel system provides a quiet, smooth ride with virtually no smoke or odors and up to 80 percent less noise than competitor diesel engines. Plus, you get impressive acceleration and precise throttle response with the QSD engine line.

Impressive fuel efficiency
The full-authority electronic engine control delivers enhanced fuel economy to give you more time on the water.
Maximize vessel performance
Mercury Diesel QSD engines are compatible with Mercury's SmartCraft electronics for comprehensive vessel diagnostic information.