Yamaha XF450USA Outboard Motor

30-Inch Shaft | 5.6-Liter V8 | Digital Electronic Control | Electronic Fuel Injection | Electric Start | Power Trim and Tilt | Gray

The Yamaha XF450USA is the 30-inch shaft version of Yamaha’s most powerful outboard — the 450-horsepower 5.6-liter V8. Designed for offshore boats with deeper transoms, this model provides unmatched horsepower, torque, and reliability. Whether powering a large center console, offshore fishing boat, or luxury vessel, the XF450USA delivers commanding performance. With Yamaha’s Digital Electronic Control system, it offers precise throttle response, seamless shifting, and refined offshore handling.

⚠️ Important: This is a Digital Electronic Control engine and must be installed by an authorized Yamaha dealer. Both the outboard and the Digital Electronic Control system require flashing and configuration with Yamaha diagnostic tools during installation. DIY installation is not supported.

Key Features:

• 5.6-Liter V8 Offshore Power – Yamaha’s largest and most powerful outboard, delivering 450 horsepower.
• 30-Inch Shaft – Designed for boats with deeper transoms and larger offshore hulls.
• Gray Finish – Rugged and durable, built to handle offshore saltwater conditions.
• Digital Electronic Control (DEC) – Ensures smooth throttle response and effortless electronic shifting.
• Electronic Fuel Injection (EFI) – Delivers optimized fuel efficiency and reliable performance.
• Electric Start with Power Trim and Tilt – Dependable ignition with fingertip trim adjustments for easy operation.
• Maximum RPM Range – 5000–6000 RPM, engineered for both strong acceleration and efficient cruising.
• Displacement – 5.6 liters (5559 cc), Yamaha’s most advanced offshore V8 platform.
• Alternator Output – 96 amps, providing exceptional charging capability for marine electronics and systems.
• Corrosion Protection System – Yamaha’s proprietary alloys, protective coatings, and flush system extend engine life in saltwater.
• Noise and Vibration Reduction – Tuned intake and exhaust reduce vibration and provide a smoother, quieter ride.
• Approximate Weight – 988 pounds, offering maximum offshore power in a balanced design.

The Yamaha XF450USA is purpose-built for larger offshore boats requiring extra shaft length. With its 5.6-liter V8 power, advanced electronic controls, and proven durability, it’s the ultimate choice for boaters demanding confidence, performance, and long-range reliability.

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

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Frequently Asked Questions

Q: How does the XF450USA differ from the XF450XSA?
A: Both share the 5.6-liter V8 platform. The XF450XSA uses a 25-inch shaft, while the XF450USA is a 30-inch shaft model designed for deeper transoms.

Q: Does the Yamaha XF450USA require professional installation?
A: Yes. This is a Digital Electronic Control engine and must be installed and programmed by an authorized Yamaha dealer using Yamaha diagnostic tools.

Q: What boats benefit most from the XF450USA?
A: Offshore fishing boats, luxury center consoles, and multi-engine offshore rigs with deeper transoms requiring a 30-inch shaft.