Why Partner with Mastry
Marina One has partnered with Mastry Marine to be your repower center for Suzuki outboards in Florida. Mastry has been distributing marine engines throughout the state of Florida for over 50 years, making Yanmar diesels the #1 repower engine of choice in its class by providing 24 hour availability of engines, parts and service. They were proud to announce the addition of Suzuki Outboard Motors to our product offering.
Repower your boat instead of buying a new one
The most powerful Suzuki Outboard Engine Yet
Sleek styling paired with equally good looks under-the-hood, the new Suzuki DF350A is built to outperform.
DF350A - 25 in. Overview & Specs
Over the course of our history in the marine industry, Suzuki has
been recognized for our 4-stroke seven times by the National Marine
Manufacturers Association for having the most innovative new outboards.
This recognition for innovation has also been coupled with many
firsts, including the first fuel injected 4-stroke outboards in 1997, the
first 250 horsepower 4-stroke outboard in 2003 and the world’s first 300
horsepower 4-stroke outboard in 2006.
Join us as we introduce the next milestone in our storied history,
the 350 horsepower DF350A, Suzuki’s Ultimate 4-Stroke Outboard.
Suzuki engineers achieved 350 horsepower while still designing a compact, lightweight powerhead. The robust engine displacement of 4.4 liters is matched by a high-performance 12.0:1 compression ratio, the highest ever for a production outboard engine. A unique combination of cool air intake, dual fuel injectors and a strengthening of the pistons has virtually eliminated engine knock, a typical by-product of high compression engines.
Suzuki engineers have designed an air intake system that allows the engine to draw in ample fresh air, while separating out water, spray and moisture. Dual louvers under the hood trap larger water droplets and then moisture as it enters the engine cowling, resulting in zero water intake during testing. In addition, intake air temperatures are, on average, 10º cooler than ambient, providing the combustion chamber with cooler, denser air for a more powerful cycle.
Two, smaller fuel injectors allow for precise injection of fuel to the center of the combustion chamber, which avoids off-center combustion – a major cause of knocking. In addition, because 100% of the fuel is injected into the cylinder at once, a degree of cooling is also obtained, providing up to 3% additional power without causing knocking.
To achieve 350 horsepower, the surface of the piston needs to withstand added forces. In order to assure both performance and long life, Suzuki engineers switched from a standard heat treatment to “shot peening.” Shot peening, a more expensive process, creates fine dimples in the face of the piston that evenly distribute the pressure created during combustion. In addition, the connecting rods and hardware have been strengthened to handle the added loads.
While contra-rotating propellers are not a new technology, they have never been successfully used on outboard motors until now. The DF350A’s dual propellers provide three key benefits, compact size, increased stability and greater “traction.”
By distributing the power of the engine over six blades, instead of just three, the size of the gears and gearcase could be kept to a minimum, which in turn allowed for the design of sleeker, more hydrodynamic gearcase. Suzuki engineers spent many hours in computer simulation and on the water, knowing that reducing drag underwater would be essential to improving overall boat speed and performance.
Contra-rotating propellers also provide added surface area, for more stability and increased “traction” or grip underwater. (Think of the wide slicks on a drag racer as compared to typical tires.) This results in exceptional acceleration, or hole-shot, truer directional propulsion (eliminating steering torque), better than expected top speeds and incredible reverse thrust. Importantly, these benefits are apparent even on heavier boats with full loads of fuel, gear and people.
- Shaft Length: X: 25 in. / 638mm
- Starting System: Electric
- Engine Type: V6 – 55 deg. DOHC 24-Valve
- Weight: X: 727 lb. / 330 kg
- Valve Train Drive: Chain with Variable Valve Timing
- Fuel Delivery System: Electronic Fuel Injection
- No. of Cylinders: 6
- Displacement: 267.9 cu.in / 4.390 liters
- Bore x Stroke: 3.74 in. x 3.82 in. / 98mm x 97mm
- Maximum Output: 350 hp / 257.4 kW
- Full Throttle Operating Range: 5,700 – 6,300 rpm
- Steering: Remote
- Oil Pan Capacity: 8.5 quarts / 8.0 liters
- Ignition System: Fully-transistorized
- Alternator: 12V 54A
- Engine Mounting: Shear Mount
- Trim Method: Power Trim and Tilt
- Gear Ratio: 2.29:1
- Gear Shift: F-N-R (Drive By Wire)
- Exhaust: Through Prop Exhaust
- Propeller Selection (All Props Are 3-Blade): Front: 3 x 15.5 x 19.5 – 31.5; Rear: 3 x 15.5 x 19.5 – 31.5
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See a complete boat makeover: New engines, dash and refinish.