Making the ultimate four-stroke outboard is the goal, and the new DF350A marks a major step toward it, according to Suzuki Marine, which unveiled its new flagship engine at the Genoa Boat Show today.

Speaking to a packed audience at the European unveiling this afternoon, Daisuke Kawatari, who was appointed general manager for Suzuki Europe back in July, said the engine hit new levels of reliability, performance and fuel economy along with low emissions. Two days ago, the DF350A picked up an Innovation Award at IBEX, marking the seventh time a Suzuki outboard has picked up such an award – the most it claims of any outboard manufacturer.

The DF350A is the first major launch for Suzuki since it unveiled its DF300AP with lean burn technology back in 2012. Prior to that, it launched its DF300 in 2006 and the DF250 in 2003. As boats get bigger the drive for increased power is inevitable, but it’s the compact nature of the DF350A that is particularly notable.

“It’s more and more common nowadays to see triple and even quad installations, so making the engine as compact as possible was a major aim,” Kawatari told IBI. It’s also the same size as its smaller sister, the DF300AP, enabling owners of the former to upgrade to the more powerful engine much more easily.

Suzuki Marine’s chief engineer, Katsuhiro Fukuda, highlighted a number of unique features on the new engine including a cleverly designed dual louver system to remove water from the air intakes and a dual injection system that generates a compression ratio of 12:1 to improve combustion efficiency. It also includes a dual water inlet to cool the engine with minimal friction loss, and a dual propeller to improve efficiency and steering performance whilst enabling the designers to reduce the diameter of the gear case. Suzuki claims its new 350 is quicker and quieter than any 350hp four-stroke on the market.

As well as the new flagship, Suzuki also unveiled its DF90A and a new DF100B that, at 157kg, it claims, is the world’s lightest 100hp outboard. A new DF25A and DF30A were also on show.