Yamaha 300hp DEC Outboard F300ECB
$15,951.00
The Yamaha 300hp DEC Outboard F300ECB is a high-performance 4.2L V6 four-stroke engineered for offshore boats with extra-high transoms. Featuring Digital Electronic Controls and a 35-inch shaft, it delivers smooth power, precise handling, and legendary Yamaha reliability in demanding saltwater conditions.
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Overview Yamaha 300hp DEC Outboard F300ECB
The Yamaha 300hp DEC Outboard F300ECB is built on Yamaha’s trusted 4.2-liter V6 offshore platform and designed specifically for boats requiring a 35-inch (XXX-Long) shaft. Known for its outstanding reliability and smooth power delivery, this model is ideal for offshore fishing boats, deep-V hulls, and vessels operating in rough saltwater environments.
With a refreshed cowling design, enhanced reverse thrust, and Digital Electronic Controls, the F300ECB offers confident handling, excellent maneuverability, and long-term durability.
Features and Performance
- 4.2L V6 Four-Stroke Engine – Strong offshore torque with smooth, efficient performance
- Digital Electronic Controls (DEC) – Precise throttle and shift response
- Electronic Fuel Injection (EFI) – Reliable starts and optimized fuel delivery
- 35″ XXX-Long Shaft – Ideal for offshore boats with extra-high transoms
- Saltwater Series II™ HP Propeller Compatibility – Improved top-end performance in lighter boats
- Shift Dampener System (SDS®) – Quieter, smoother gear engagement
- TotalTilt™ System – One-touch full trim up or down for easy trailering
- Thrust Enhancing Reverse Exhaust – Superior control when docking or reversing
- High-Output Alternator (50–70 Amp) – Supports advanced marine electronics
Why You Should Buy it
If your offshore boat requires a 35-inch shaft and dependable V6 power, the Yamaha F300ECB is an excellent choice. Its combination of digital control, smooth performance, and Yamaha’s legendary offshore reliability makes it a smart long-term investment for serious saltwater boating.
| Specification | Details |
|---|---|
| Engine Type | Yamaha F300ECB DEC Four Stroke |
| Horsepower | 300 hp |
| Cylinders | 6 (V6) |
| Displacement | 4.2 L |
| Fuel System | Electronic Fuel Injection (EFI) |
| Shaft Length | 35" (XXX-Long) |
| Throttle / Shift | Digital Electronic Controls |
| Steering | Command Link Controls with Remote Hydraulic Steering |
| Starter | Electric |
| Weight | 562 lbs |
| Alternator Output | 50–70 Amp |
| Full Throttle RPM Range | 5000 – 6000 rpm |
| Degree of Trim | -3° to +16° |
| Degree of Tilt | 70° |
| Warranty | Yamaha 3-Year Warranty |
| Standard Features | Power Trim & Tilt, Owner’s Manual |
- Yamaha 300hp DEC Outboard F300ECB
- Power Trim & Tilt
- Owner’s Manual



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