DF140B

The new Suzuki outboard engine, the DF140B, features enhancements that further improve its overall performance. The compression ratio is now 10.6/1, allowing this over 2-liter outboard to further increase top speed and improve acceleration while optimizing thermal efficiency.

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

The new cowling incorporates a special air intake that optimizes water separation while reducing intake 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 components and wiring, allowing for better spark generation and improved combustion efficiency.

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