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All the power you want for your outboard engine by  Suzuki Marine, he  top of the engine range. It's the  DF350A, an  V6 four-stroke that with its 350 horsepower  is the most powerful ever built by the Japanese manufacturer. Fruit   of a development that lasted more than three years, is a milestone for both the technical content and the design.
Suzuki engineers have reached the  350 horsepower  without neglecting the elements that today are considered fundamental as the compactness and lightness of an engine that develops a volume of 4.4 liters and a compression ratio of 12.0: 1, numbers of a propulsion of competition, so that it is the highest for the outboards   manufactured in series. An unprecedented combination of air cooling to be sent to the combustion chamber, dual fuel injectors and a reinforcement of the pistons has practically eliminated shock, a typical side effect of high compression engines.

Suzuki engineers have designed an air suction system that allows the engine to run with a lot of fresh air, separating it from water, splashes and moisture. The double walls under the catch trap the larger water droplets and moisture when it enters the engine hood, with the consequence, as demonstrated by the   tests conducted by Suzuki,  eliminate the entrance of water. In addition, the temperature of the suction air is on average 10 degrees lower than that of the environment, providing the combustion chamber cooler air, and therefore more dense, for a more powerful combustion.

Having two smaller fuel injectors, instead of just one, allows a better distribution of gasoline in the center of the combustion chamber, a solution that avoids decentralized combustion, one of the main causes of blows. But there is something else: since the totality of gasoline is injected directly into the cylinder, at the same time, it generates a small additional cooling, but able to increase more than one   three percent power, without knocking phenomena.

To obtain a power of 350 horsepower, the surface of the piston has to withstand added forces. In order to  guarantee both performance and duration, Suzuki engineers have gone from a standard heat treatment to blasting, or bombing with metal "shot peening" points. A more expensive process creates small depressions in the face of the piston that distribute the pressure evenly created during combustion. In addition, the link bars and all the mechanical parts have been reinforced to handle the added loads.

Although the propellers rotate in the opposite direction in a single axis are not a novelty, so far have not been used successfully in the outboards. The double helices of the  DF350A They offer three key advantages, compact size, greater stability and greater "traction".

By distributing the motor power of six blades, instead of three, the size of the gears and the relative box can be kept to a minimum, this, in turn, allows the design of a more compact transmission box e   hydrodynamics The engineers from  Suzuki  have spent many hours in computer simulation and in water, knowing that reducing water resistance is essential for improve speed and overall performance of the boat.

The reverse propellers   also provide a larger surface area, providing more stability and traction or, in other words, more grip under water: imagine, as a comparison, the wide tracks of a slick tire compared to an ordinary tire. This results in  an exceptional acceleration, a precise thrust forward   - eliminating the evolutionary effect of the singular propeller - maximum speed higher than expectations and excellent reverse gear. Keep in mind how these advantages also remain in the heaviest ships with full fuel load, equipment and people.


  • X: 635 (25)
  • XX: 762 (30)
WEIGHT kg (Lbs.) * 1
  • X: 330 (727)
  • XX: 339 (747)
ENGINE TYPE V6 - 55 ° DOHC 24-Valve
Valve Train Drive Chain with Variable Valve Timing
FUEL DELIVERY SYSTEM Electronic Fuel Injection
PISTON DISPLACEMENT ㎤ ( 4,390 (267.9)
BORE × STROKE mm (in.) 98 (3.74) x 97 (3.82)
MAXIMUM OUTPUT kW (PS) 257.4 (350)
OIL PAN CAPACITY l (U.S./Imp. Qt.) 8.0 (8.5)
IGNITION SYSTEM Fully-transistorized
TRIM METHOD Power Trim and Tilt
GEAR RATIO 2.29: 1
GEAR SHIFT F-N-R (Drive-by-Wire)
EXHAUST Through Prop Hub Exhaust
PROPELLER SELECTION (Pitch) * 2All propellers are the 3-blade type FRONT: 3 × 15 1/2 × 19.5-31.5
REAR: 3 × 15 1/2 × 19.5-31.5

The DF350A is equipped with the   Suzuki Precision Control, the accelerator and the drive-by-wire inverter, with electronic connection. The driver will be pleasantly surprised by the smoothness of the gear changes, the gas accuracy and ease of maneuver, especially in the case where more engines are installed.

Like other outboards Suzuki V6, the model DF350A account for the   classic misalignment between the motor shaft and the drive shaft, to reduce the overall size. In addition, the two-stage speed reducer ensures a greater reduction ratio (2.29: 1), a higher pair for faster acceleration and improvements in maximum velocity.

The  DF350A  also takes advantage of   Suzuki's well-known Lean Burn technology, of low combustion, for a reduction in fuel consumption at each rotation speed, but above all at cruising speed. Finally, they declare with pride, the DF350A is extraordinarily silent.

"We have taken the time necessary to design what we believe is the final outboard," Osawa said. "The DF350A is prepared to face all the challenges and needs of today's ships by giving a" surprise "of satisfaction to the owners who are looking for new powers   to manage ever larger ships."

The DF350A with the slogan "A REVOLUTION IN INNOVATION" already on the market and with its great acceptance, is a good option to give that extra power to your boat. Would not you like to hang it on your stern?

For more information about the SUZUKI 350DF A, click on the link ;.