Yamaha F425 XTO Offshore outboards are available through our global supply network with select units ready for immediate shipment worldwide. These 425 HP Yamaha XTO Offshore V8 engines are stocked in standard and counter-rotating configurations, supporting twin, triple, and quad-engine offshore installations. Inventory includes multiple shaft length options and rigging configurations, supplied in Yamaha Gray and Pearlescent White finishes to match modern offshore vessels.
Our distribution system supports single engine purchases as well as complete multi-engine setups, serving boat builders, marinas, commercial operators, and marine dealers expanding their outboard inventory. Contact our team today to confirm available Yamaha F425 XTO Offshore outboards and secure units while current stock remains available.
Product Media
The XTO Offshore® 425 is the result of years of collaboration with top boat designers and has been built from the ground up to provide the ultimate in power and efficiency offshore. With impressive stats such as 12.2:1 compression ratio for impressive fuel economy and power, industry firsts such as an electric steering system and engineering touches such as iridium spark plugs and quad thermostats, it’s purpose-built for extreme power, durability, control and reliability.
- Phase Angle Control Charging System an award-winning industry first
- Available in signature Yamaha gray or new pearlescent white
- 425 hp on less-expensive 89-octane gasoline
- Impressive 5-year Limited Warranty, for pleasure use
Specifications
425 HP
| Weight † | 432 kg (952 lbs) / 443 kg (977 lbs) / 453 kg (999 lbs) |
|---|---|
| Full Throttle RPM Range | 5000 – 6000 RPM |
| Fuel Induction System | Direct Injection / Up to 2900 PSI |
| Recommended Engine Oil | Yamalube® 4M (See owner’s manual) |
| Engine Type | V8 / DOHC / 32 valves / 4 Valves per Cylinder |
| Displacement | 5.6L |
| Bore x Stroke | 96 x 96 mm (3.78 x 3.78 in) |
| Prop Shaft Horsepower | 425hp at 5500 RPM |
| Alternator Output at W.O.T. | 100 Amp Gross, Max |
| Compression Ratio | 12.2:1 |
| Recommended Fuel | Octane 89 |
| Recommended Fuel Filtration | Yamaha 10-Micron Fuel / Water Separating Filter (external) |
| C.A.R.B. Rating | 3-Star |
| Exhaust | Through Propeller (Except in Reverse Under 2500 RPM) |
| Intake | 32 |
| Ignition | TCI Microcomputer |
| Spark Plug | ILMAR7E-9 / Iridium |
| Starting System | Electric w/ PTT |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 7.8L / 8.2 Quarts | 7.5L / 7.9 Quarts |
| Recommended Cooling | Thermostatic Control |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | (25/14) 1.79 |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | 25″ – 30″ – 35″ |
| Degree of Tilt | -4° through +73° |
| Degree of Trim | -4° through +16° |
| Mounting Centers | 28.5″ |
| Steering | Integrated, Electric Actuation |
| Steering Angle (maximum) | 31° from center, either direction |
| Warranty | Limited 5-Year Pleasure, 3-Year Government, 1-Year Commercial |
Miles from shore. No land in sight. Nothing on your mind but the adventure ahead and the formidable offshore gamefish that await. That’s the beauty of having a reliable Yamaha 5.6L V8 XTO Offshore® behind you. Purpose-built for the rigors of the offshore, the XTO gives you extreme control, precision, and durability—and now up to 450 horses. Go further and with more confidence than ever before—the Yamaha XTO Offshore F450 and F425.