Yamaha XF450USA4 Outboard Motor

30-Inch Shaft | 5.6-Liter V8 | Digital Electronic Control | Electronic Fuel Injection | Electric Start | Power Trim & Tilt | Classic White

The Yamaha XF450USA4 is the 30-inch shaft, Classic White edition of Yamaha’s most powerful offshore outboard. Delivering 450 horsepower from a massive 5.6-liter V8, it’s built for larger offshore boats that need extended shaft length and dependable muscle. The Classic White finish adds a clean, premium look that pairs perfectly with luxury center consoles, sportfishing boats, and yachts.

Thanks to Yamaha’s Digital Electronic Control (DEC) system, you’ll experience smooth throttle response, precise shifting, and efficient fuel delivery—ideal for offshore runs where control and confidence matter most.

⚠️ Important:

This engine must be installed and programmed by an authorized Yamaha dealer. Both the outboard and the DEC system require setup with Yamaha diagnostic tools. DIY installation is not supported.

⚠️ Note: Photos shown are for reference only. Images of the XF450 in Classic White will be updated when available.

Key Features

• 5.6-Liter V8 Offshore Power – Yamaha’s strongest outboard, producing 450 horsepower for serious offshore performance.
• 30-Inch Shaft – Perfect for deep-V hulls and large boats that need extra transom clearance.
• Standard Rotation Model – Works well as a single engine or paired with counter-rotating models in multi-engine setups.
• Classic White Finish – A refined, marine-grade coating designed for luxury vessels.
• Digital Electronic Control (DEC) – Smooth throttle control and effortless shifting for precise handling.
• Electronic Fuel Injection (EFI) – Reliable, efficient power and consistent performance.
• Electric Start with Power Trim & Tilt – Easy ignition and fingertip trim adjustments while underway.
• Maximum RPM Range: 5000–6000 RPM – Balanced for acceleration and efficient cruising.
• Displacement: 5.6 liters (5559 cc) – Yamaha’s advanced offshore V8 platform.
• Alternator Output: 96 amps – Plenty of charging power for electronics and onboard systems.
• Corrosion Protection System – Yamaha’s exclusive alloys, coatings, and freshwater flush system help resist saltwater damage.
• Noise & Vibration Reduction – Designed for a smoother, quieter ride offshore.
• Approximate Weight: 999 lbs – Built for stability, strength, and balanced performance.

Overview

The Yamaha XF450USA4 combines Yamaha’s proven offshore engineering with a refined Classic White finish. It’s built for boaters who want both serious power and premium style. Whether on a single or multi-engine setup, this V8 delivers smooth, confident performance and long-term reliability in the toughest offshore conditions.

Need help finding the right model? Visit our Yamaha Engine Guide for more options and setup recommendations.

Frequently Asked Questions

Q: Why choose a 30-inch shaft outboard?

A: The 30-inch shaft provides added clearance and helps keep the propeller at the right depth in rough water—especially useful on larger, deep-V boats.

Q: Is it better for single or multi-engine setups?

A: The standard rotation model works great as a single engine or in twin/multi-engine configurations when paired with counter-rotation units.

Q: How does the Classic White finish hold up in saltwater?

A: Yamaha’s Classic White coating is a marine-grade finish made to resist corrosion and maintain its clean, polished look in tough saltwater environments.