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 — a 450-horsepower, 5.6-liter V8 built for serious offshore performance. Whether it’s pushing a large center console, offshore fishing boat, or luxury yacht, the XF450USA provides the strength, control, and reliability that Yamaha is known for.

With Digital Electronic Control (DEC), the XF450USA offers precise throttle response, smooth shifting, and effortless handling. It’s built to handle the toughest offshore conditions while maintaining Yamaha’s signature balance of performance and refinement.

⚠️ Important:

This is a Digital Electronic Control engine and must be installed by an authorized Yamaha dealer. Both the outboard and control system need to be programmed using Yamaha diagnostic tools. DIY installation is not supported.

450hp outboard price

A 450hp outboard price varies by brand, shaft length, color, steering, controls, propeller, rigging, installation, freight, dealer setup, and current availability. For Yamaha shoppers, check the current Yamaha XTO Offshore 450 product price or request a quote for the exact configuration.

When comparing 450hp outboards, confirm whether the price includes only the engine or also includes controls, gauges, steering, propellers, rigging, installation, and taxes.

Key Features

• 5.6-Liter V8 Offshore Power Yamaha’s largest and most powerful outboard, delivering 450 horsepower and incredible torque.
• 30-Inch Shaft Ideal for larger offshore boats with deep transoms that need extra propeller depth.
• Gray Finish Rugged and durable, built to stand up to the harsh conditions of saltwater boating.
• Digital Electronic Control (DEC) Provides ultra-smooth throttle response and precise, effortless shifting.
• Electronic Fuel Injection (EFI) Ensures clean starts, consistent power, and excellent fuel efficiency.
• Electric Start with Power Trim and Tilt Reliable ignition with simple, fingertip trim adjustments for easy operation.
• Maximum RPM Range: 5000–6000 RPM Tuned for strong acceleration and efficient cruising at higher speeds.
• Displacement: 5.6 liters (5559 cc)** Yamaha’s most advanced offshore V8 platform.
• Alternator Output: 96 amps** Delivers plenty of charging power for marine electronics and onboard systems.
• Corrosion Protection System Yamaha’s proprietary alloys, coatings, and flush system help protect against saltwater damage.
• Noise and Vibration Reduction Engineered intake and exhaust systems provide a smoother, quieter ride offshore.
• Approximate Weight: 988 lbs** Heavy-duty construction offering maximum offshore performance in a balanced design.

Overview

The Yamaha XF450USA is built for serious offshore boaters who demand power, precision, and dependability. With its 30-inch shaft, 5.6-liter V8 engine, and advanced electronic control system, it’s the ideal choice for large center consoles, offshore fishing boats, and luxury multi-engine setups. Reliable, powerful, and refined — it’s everything an offshore outboard should be.

Need help choosing the right engine? Visit our Yamaha Engine Guide for more details.

Frequently Asked Questions

Q: How does the XF450USA differ from the XF450XSA?

A: Both share the same 5.6-liter V8 engine platform. The XF450XSA has a 25-inch shaft, while the XF450USA comes with a 30-inch shaft, designed for deeper transoms.

Q: Does this engine require professional installation?

A: Yes. The XF450USA uses Yamaha’s Digital Electronic Control system, which must be installed and configured by an authorized Yamaha dealer using diagnostic tools.

Q: What types of boats benefit most from the XF450USA?

A: It’s perfect for offshore fishing boats, luxury center consoles, and multi-engine offshore rigs that need a 30-inch shaft for deeper transoms.