The Ultimate Choice
We are extremely proud of what we have achieved with the DF300B – an outboard that perfectly balances awesome power and thrust, with outstanding fuel-efficiency and trusted reliability all in a lightweight and stylish design.
Built for every-day use of larger boats, this market-leading new outboard has been engineered to run on 91 RON fuel and, is the world's first four stroke outboard of 300 horsepower with a dual propeller. This high-tech and innovative DF300B has been designed to be robust, easy to use and versatile, making it the ideal outboard for large boats whatever the task.
Whether you are using your boat for work or for leisure, wherever you are in the world, this new outboard is the ultimate choice.
GEKI: Parting Seas
Representing Suzuki’s Identity and Heritage
A Symbol of Our Passion and Commitment
to the Ultimate in Marine Innovation
Combining Huge Power and Maximum Efficiency
The traditional single propeller design creates forward thrust, but also produces a significant amount of rotational energy. Our engineers have captured this wasted energy and turned it into productive power by utilising our revolutionary dual-propeller technology. They have solved the problem of the disruption of the water flow, caused by the larger gear case, typically needed by higher power engines. Years of research and innovation have gone into developing the technologies that significantly improve the way an outboard converts engine power into underwater thrust. The result is a revolution in innovation. We call it ‘GEKI’.
Features
Development of Suzuki's first Contra-rotating Propeller
Development of Suzuki's first Contra-rotating Propeller
Our engineers know that the shape of the lower unit and the design of the propeller have a critical impact on performance. The innovative contra-rotating propeller design provides more grip underwater, and because contra-rotating propellers distribute the engine's torque evenly over two propellers, the torque per propeller decreases and gear diameter can be reduced. A reduction in gear diameter has allowed the design of a smaller, and far more hydrodynamic gear case.Advanced Gear Case Design
Advanced Gear Case Design
At high speeds cavitation can cause significant losses in speed and grip. The New DF300B overcomes this with a highly advanced gear case design. Computational fluid dynamics (CFD) and countless test drives, have resulted in a breakthrough design that not only minimises resistance but also provides a highly efficient flow of water to the propellers.Propeller Blade Design
Propeller Blade Design
A new three-blade/three-blade propeller set up has been developed that provides incredible acceleration and increased performance. In testing, this configuration recorded the highest speeds, even under heavy load and at high rotation speeds. The propeller blade geometry has also been optimised to work in the configuration resulting in incredible grip and acceleration across the range. An added benefit is exceptional stability, achieved because each propeller rotates in a different direction, balancing the turn.High Reverse Thrust
High Reverse Thrust
With six blades rotating, the contra-rotating propeller produces a strong reverse thrust. The materials of the new DF300B gears are ultra-strong to withstand high loads and feature special heat treatment to give additional strength and reliability.Unrivalled Big-Block Fuel Economy & Reliability
Unrivalled Big-Block Fuel Economy & Reliability
The ultimate Suzuki outboard is always aiming to be lighter and more powerful. The new DF300B features our proven 4.4 litre displacement block giving tremendous torque and making it the largest displacement V6 on the market today. Plus, with a compression ratio of 10.5:1 the DF300B also delivers impressive fuel economy and reliability.Direct Intake System and Dual Louver System
Direct Intake System and Dual Louver System
Achieving a flow of cooler, drier air directly into the engine is made possible by the unique combination of the Direct Intake System and the Dual Louver System. This revolutionary approach ensures a direct flow of air whilst eliminating water intake, even in the face of the most severe on-water testing. The Dual Louver System incorporates a double shield of blades, each one designed in a dog-leg shape. This system helps remove water from the air and prevents water to be taken into the cowl. As a result, intake air is free of moisture and kept close to ambient temperature.Dual Injectors
Dual Injectors
Injecting fuel achieves two things, it atomises the fuel and it cools the cylinder. To provide the power and cooling needed, the fuel must be completely injected at precisely the right time and angle. The all new Dual Injector System uses two smaller injectors giving immense precision, improved atomisation and increased fuel efficiency.Dual Water Inlet
Dual Water Inlet
Dual water inlet is a technology developed to cool the engine with minimal friction loss, using a combination of a small water pump and dynamic water pressure. Conventional outboards have water inlets on the side of the strut of the gear case. However, at very high speed, the water pressure at the strut surface is reduced, making it difficult to maintain stable water suction. The DF300B has water inlets on the tip of the gear case, which helps with water suction even when there is dynamic pressure caused by the movement of the gear case through the water.Lean Burn
Lean Burn
Our innovative Lean Burn Control System was first introduced on the DF90A/80A/70A to great acclaim. The system predicts fuel needs according to operating conditions, allowing the engine to run on a leaner, more efficient air-fuel ratio. It delivers its benefits over a wide operating range, providing significant improvements in fuel economy from low-speed operation into the cruising range. In combination with Suzuki Precision Control electronic throttle and shift system, the operator can precisely, and smoothly, increase or decrease engine RPM for significantly improved fuel economy.2-Stage Gear Reduction
2-Stage Gear Reduction
The DF300B outboard also incorporates a 2-Stage Gear Reduction which results in a large reduction gear ratio. It delivers powerful torque for quick acceleration and great top-end speed.Offset Driveshaft
Offset Driveshaft
Suzuki outboards are among the most compact outboards in their respective classes.That’s due in part to our proven offset driveshaft system. This design places the crankshaft in front of the driveshaft through the use of intermediate gear reduction. In addition to providing an increase in power performance and adding to the compactness of the outboard, this system moves the outboard’s centre of gravity forward, resulting in better weight distribution and balance, better directional stability, and less vibration.
Advanced Variable Valve Timing System
Advanced Variable Valve Timing System
Our engineers designed the 4.4-litre V6 engine with an aggressive cam profile that delivers maximum output and performance at high rpm. In coupling this cam profile with our advanced Variable Valve Timing (VVT), the DF300B delivers the additional torque that outboards need for accelerating in the low to midrange. VVT achieves this by adjusting the timing of the intake valves, allowing them to open before the exhaust valves are fully closed, creating a momentary overlap in the timing where both sets of valves are open. Using VVT, this overlap can be increased or decreased by altering intake timing with the camshaft resulting in optimum timing for low and mid-range operation.Precision Control
Precision Control
This technologically advanced system is a computer-based drive-by-wire control system that eliminates the friction and resistance of mechanical control cables. Operation is smooth and precise with crisp, immediate shifting that is most evident in the low rpm range and when manoeuvring around the marina and in close quarters. The system is configurable for single, twin, triple, or quad installations, and for dual stations.Suzuki Troll Mode System
Suzuki Troll Mode System
Suzuki’s Trolling Mode system provides finer control over engine speed at low rpms to keep your boat moving at a constant speed while trolling. When the system is engaged, revs are controlled with an independent control switch that adjusts engine revs in 50rpm increments over a range spanning from idle to 1,200rpm. The system includes a control switch, which can be mounted nearly anywhere on the console, and a tachometer, and is compatible with Suzuki’s SMIS digital gauges or the dual scale analogue gauges.Specifications
| Starting system | Electric |
| Engine Type | V6 (55°) 4-stroke |
| Fuel Delivery System | Electronic Fuel Injection |
| Bore X Stroke | 98 x 97mm |
| Full Throttle Operating Range | 5,300 - 6,300rpm |
| Oil Pan Capacity | 8.0L |
| Fuel Tank Capacity (L) | - |
| Trim Method | Power Trim and Tilt |
| Gear Shift | F-N-R |
| Propeller Selection (Pitch) | 12" - 31.5" |
| Weight | X: 330kg, XX: 339kg |
| Valve Train | DOHC 24-Valve |
| Displacement | 4,390cm³ |
| Maximum Output | 220.7kW |
| Control System | Digital (Drive-by-wire) |
| Recommended Fuel | RON91 / AKI87 |
| Alternator | 12V 54A |
| Gear Ratio | 2.29 : 1 (Two-stage gear reduction) |
| Exhaust | Through Prop Hub Exhaust |
Buy the DF300B OUTBOARD
Discover our accessories
Loading...
Disclaimer
*‘Sail Away’ on 2.5 to 30hp tiller-controlled models the price includes dealer pre-delivery charges. “Manufacturer’s Suggested Retail Price” (MSRP) excludes fitting and associated costs.
‘Sail Away’ on Suzumar inflatable boat package includes the inflatable boat, outboard motor, and associated pre-delivery charges. Excludes trailer and fitment to a trailer.
TERMS & CONDITIONS FOR BLACK FRIDAY SALE
1. The BLACK FRIDAY SALE campaign period is valid from 24th > 27th of November 2023
2. A sales contract or deposit must be made during the campaign period.
3. The sale must be paid for in full and the customer must take delivery of the Suzuki outboard or Suzumar package by Sunday 31st of December 2023.
4. The gift card will be issued electronically to the retail customer by Suzuki Australia Pty Limited, within 14 business days upon collection of the Suzuki outboard motor or Suzumar package.
5. The gift card promotion is only valid for selected models, refer to the offer page.
6. The offer is in conjunction with the Get Spring Ready event.
*‘Sail Away’ on 2.5 to 30hp tiller-controlled models the price includes dealer pre-delivery charges. “Manufacturer’s Suggested Retail Price” (MSRP) excludes fitting and associated costs.
‘Sail Away’ on Suzumar inflatable boat package includes the inflatable boat, outboard motor, and associated pre-delivery charges. Excludes trailer and fitment to a trailer.
TERMS & CONDITIONS FOR BLACK FRIDAY SALE
1. The BLACK FRIDAY SALE campaign period is valid from 24th > 27th of November 2023
2. A sales contract or deposit must be made during the campaign period.
3. The sale must be paid for in full and the customer must take delivery of the Suzuki outboard or Suzumar package by Sunday 31st of December 2023.
4. The gift card will be issued electronically to the retail customer by Suzuki Australia Pty Limited, within 14 business days upon collection of the Suzuki outboard motor or Suzumar package.
5. The gift card promotion is only valid for selected models, refer to the offer page.
6. The offer is in conjunction with the Get Spring Ready event.
Terms & Conditions
Suzuki Australia Pty Limited (Suzuki) requires you to pay a $1,000 as a deposit to secure your Order for the new outboard motor. This will be credited towards the final purchase price of the outboard motor from your nominated authorised Suzuki Marine Dealer (Dealer).
- Suzuki will confirm your outboard motor Order with your nominated Dealer 3 business days after your Order has been placed.
- During this 3 business day period, you may cancel your Order without any charge.
- Your deposit will be 100% refundable if you cancel your Order within the 3 business day period by notifying us in writing at marinemarketing@suzuki.com.au. Please include all relevant details, including your full name, address and [purchase order number] in your notification.
- If you cancel your Order after the 3 business day period has expired, Suzuki will refund your deposit amount, less $550 to you, which takes into account the reasonable administrative costs Suzuki will incur as a result of your cancellation.
- Stock can be extremely limited in some cases; Suzuki Australia makes no representations as to the availability of your preferred outboard motor and/or genuine accessories and rigging components. Suzuki will do everything within its power to facilitate your Order and supply you with your preferred outboard motor or assist you in selecting a satisfactory alternative. In the unlikely event your Order cannot be fulfilled, you will be notified by a Suzuki representative and receive a full refund of the deposit amount placed.
- Your new Suzuki outboard motor will not be able to be collected until your nominated Dealer has received full and cleared payment of the balance outstanding.
- Orders must be collected within 90 days of delivery to your nominated Dealer. Failure to collect within the 90 day period will result in forfeit of the deposit placed.
- By clicking ‘CONFIRM PAYMENT’, and providing a deposit, you will become bound by these ‘BUY NOW’ terms. If you do not wish to be bound by these terms, do not click ‘CONFIRM PAYMENT’ and do not provide a deposit.
- The customer name on the Order must be the same name as the as the person to whom the outboard motor will be registered to at delivery.
- Dealer Staff, Dealer Management and Suzuki Staff are not permitted to alter the customer name of the Order or Retail Delivery Advice (RDA) and may not transfer the Order into another name, including company or business name.
- Any change in customer name of an Order by Dealer Staff, Dealer Management or Suzuki Staff to transfer the Order to another individual or to any company or business name at any time prior to or at the time of RDA will be deemed a cancellation of the Order and result in forfeit of the full deposit amount.
- Suzuki reserves the right to not to accept a new outboard motor Order. A full refund of the deposit amount placed will be issued for any unaccepted Orders.
- Nothing in these terms affects any rights to a refund you may have under the Australian Consumer Law, or under your sales contract with your Dealer.
Are you sure you want to exit?
Exiting will return you to the Suzuki Marine website.