Suzuki DF350A Outboard Motor – Dual Prop. Dual Power. One Revolutionary V6 Engine.
The Suzuki DF350A is the flagship 350HP outboard motor from Suzuki Marine, engineered to redefine what’s possible on the water. With a 4.4-liter V6 block, industry-first dual contra-rotating propellers, and exclusive Suzuki Dual Louver Cooling, the DF350A delivers incredible torque, acceleration, balance, and fuel efficiency. Whether you’re powering an offshore fishing machine or a high-end cruiser, this engine offers the perfect balance of innovation, power, and control.
🔧 Suzuki DF350A Key Features
| Feature | Description |
|---|---|
| Horsepower | 350 HP @ 6,300 RPM |
| Engine Type | 4-Stroke DOHC 24-Valve V6, 55° Bank Angle |
| Displacement | 4,390 cc (4.4 Liters) |
| Gear Ratio | 2.29:1 (Optimized for dual props) |
| Fuel Delivery System | Multi-Point Sequential Electronic Fuel Injection (EFI) |
| Propulsion | Contra-Rotating Dual Propellers (Suzuki Dual Prop System) |
| Steering | Available with Hydraulic or Digital Precision Steering |
| Color Options | Pearl Nebular Black & Cool White |
| Drive-by-Wire | Yes, Suzuki Precision Control (SPC) – Digital Throttle & Shift |
📊 Suzuki DF350A Technical Specifications
| Specification | Details |
|---|---|
| Horsepower | 350 HP |
| Max RPM Range | 5,700–6,300 RPM |
| Engine Type | V6, 4-Stroke, 24-Valve, DOHC |
| Displacement | 4,390 cc (267.9 cu. in.) |
| Bore x Stroke | 98 x 97 mm |
| Steering Type | Remote / Hydraulic / Digital (optional) |
| Gear Ratio | 2.29:1 |
| Ignition | Solid State Direct Ignition |
| Trim & Tilt | Power Trim and Tilt |
| Starting System | Electric |
| Alternator Output | 54 Amps (12V) |
| Shaft Lengths Available | 25” (X), 30” (XX), 35” (Ultra Long) |
| Dry Weight (approx.) | 727–747 lbs (330–339 kg) |
🌊 DF350A Key Innovations & Technologies
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Contra-Rotating Dual Props – Twin props deliver balanced thrust, improved grip, and reduced cavitation.
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Suzuki Dual Louver System – Keeps air intake cool and dry, improving combustion and performance.
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Direct Air Intake with Water Separation – Boosts efficiency by feeding the engine clean, cool air.
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Suzuki Lean Burn Technology – Automatically adjusts fuel delivery for optimal economy at cruising speed.
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Suzuki Precision Control (SPC) – Electronic throttle and shift system with smooth, instant response.
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Quiet, Balanced Operation – Offset driveshaft and large flywheel reduce vibration and enhance smoothness.
🚤 Ideal Applications for the DF350A
| Boat Type | Advantages with DF350A |
|---|---|
| Offshore Fishing Boats | Unmatched torque for quick planing and big water control |
| Performance Cruisers | Refined power delivery and smooth handling for high-speed cruising |
| Twin/Triple Engine Rigs | Space-saving compact design makes multi-rigging efficient and easy |
| Luxury Yachts & Tenders | Quiet, refined, and aesthetically premium design options |
| Commercial & Charter Boats | Rugged, reliable, and backed by Suzuki’s global service network |
⚙️ Propulsion Reimagined: Dual Prop System
Suzuki’s industry-first Contra-Rotating Propeller System allows the DF350A to:
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Deliver better underwater grip, especially in tight turns and rough water
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Offer better hole shot acceleration and balanced steering (especially when used as a single)
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Reduce cavitation for greater fuel efficiency and stability at low and high speeds
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Make multi-engine installations more compact and streamlined
🔋 Suzuki DF350A Electrical & Control Systems
| System | Description |
|---|---|
| Suzuki Precision Control | Drive-by-wire for smooth, responsive shifting and throttle control |
| Optional Joystick Steering | Ideal for multi-engine applications; improves docking and close-quarters maneuvering |
| High Output Alternator | 54A – supports multiple electronics and onboard systems |
| NMEA 2000 Integration | Compatible with all major marine displays (Garmin, Raymarine, etc.) |
| Diagnostic Alerts | Onboard self-monitoring and maintenance reminder system |
🛡️ Durability & Reliability – Built for Saltwater & Serious Use
Suzuki designed the DF350A to perform under extreme marine conditions with:
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Corrosion-Resistant Materials – Suzuki’s anti-corrosion finish and stainless steel components
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Self-Adjusting Timing Chain – Maintenance-free and oil-bathed for long-term reliability
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Dual Water Intakes – Ensures consistent engine cooling even in heavy seas
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Water-Detecting Fuel Filter – Protects engine against contaminated fuel
✅ Key Advantages of Suzuki DF350A
| Advantage | Why It’s a Game-Changer |
|---|---|
| 350HP Class-Leading Torque | More low-end grunt and mid-range punch than traditional 4-strokes |
| Innovative Dual Props | First in class – better grip, fuel economy, and balance |
| Digital Shift & Throttle | Smooth, precise, and effortless control |
| Ultra-Efficient Design | Lean burn at cruise = lower fuel bills over long journeys |
| Quiet Operation | One of the most refined sound profiles in its class |
| Flexible Rigging | Perfect for single, twin, triple, or quad setups |
📦 Available Accessories & Options
| Accessory | Description |
|---|---|
| Color-Matched Cowls | Pearl Nebular Black and Cool White finishes |
| Digital Multi-Function Gauge | Real-time performance, fuel flow, and RPM data |
| Joystick Control Kit | Available for multi-engine configurations |
| Flush-Mount Controls | Sleek helm appearance for SPC system users |
| Propeller Options | Stainless steel 3-blade and dual-prop custom pitch selections |
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