Yamaha F300USB4 Outboard Motor

30-Inch Shaft | DEC (Digital Electronic Control) | Electric Start | Power Trim & Tilt | Classic White

The Yamaha F300USB4 combines Yamaha’s proven offshore power with the timeless Classic White finish, making it a perfect match for premium center consoles, offshore fishing boats, and luxury multi-engine setups. Powered by the legendary 4.2L V6 four-stroke platform, this 300-horsepower outboard delivers strong midrange torque, smooth top-end speed, and exceptional fuel efficiency for extended days on the water.

Equipped with Digital Electronic Control (DEC), the F300USB4 delivers precise, effortless throttle and shift response for confident handling in all conditions—whether docking in tight spaces or powering through offshore swells. The 30-inch shaft is designed for boats with taller transoms, ensuring optimal propeller placement and performance.

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Key Features:

• 300 Horsepower, 4.2L V6 Four-Stroke Engine
  Offshore-grade torque, acceleration, and fuel efficiency.
• Classic White Finish
  Clean, timeless look with excellent corrosion protection.
• Digital Electronic Control (DEC)
  Smooth, accurate throttle and shift operation.
• 30-Inch Shaft Length
  Optimized for taller offshore transoms and multi-engine rigs.
• Electric Start
  Push-button ignition for quick, reliable starting.
• Power Trim & Tilt
  Easily fine-tune motor angle for speed, fuel economy, or shallow-water operation.
• Electronic Fuel Injection (EFI)
  Enhances throttle response, efficiency, and long-term dependability.

Need help choosing your engine? Check out our Yamaha engine guide.

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Frequently Asked Questions

Q: What does “B4” stand for?
A: “B4” indicates the generation and finish type—in this case, the Classic White DEC variant.

Q: Is this model saltwater-ready?
A: Yes—Yamaha’s corrosion protection system is built specifically for offshore environments.

Q: Who should choose a 30-inch shaft model?
A: It’s best for boats with high transoms or where deeper propeller placement is needed for optimal performance.