DF140B - Stealth Line

The new Suzuki outboard engine, the DF140B, benefits from developments that further improve its overall performance. The compression ratio is increased to 10.6/1, allowing this over 2-liter outboard to further enhance top speed and achieve better acceleration while optimizing thermal efficiency.

Fuel efficiency has also been improved compared to the well-known DF140A model. Tests have demonstrated a 5 to 6% reduction in fuel consumption over a range of mid to high speeds.

The new cowl features a specialized air intake that optimizes water separation while reducing inlet air temperature, enabling higher power output at intermediate speeds. A resonator system further reduces engine noise at all speeds.

The new direct ignition system reduces the number of parts and wiring, allowing for a better ignition spark and improved combustion efficiency.

The main difference from its "little brother" DF115B is that it delivers power over a higher RPM range.