2025 Yamaha Marine V8 5.6L 425 hp Base

Information

2025 Yamaha Marine V8 5.6L 425 hp

XTO OFFSHORE

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.

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.

Features may include:

  • 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

Photos

Highlights

  • Church Creek, Maryland
  • 2025
  • Yamaha Marine
  • V8 5.6L 425 hp Base
  • Recommended: Octane 89 | Recommended Filtration: Yamaha 10-Micron Fuel / Water Separating Filter (external)
  • Available

Specifications

  • 2025
  • Yamaha Marine
  • V8 5.6L 425 hp
  • Base
  • General
  • V8 / DOHC / 32 valves / 4 Valves per Cylinder
  • Prop Shaft: 425hp at 5500 RPM
  • 5.6L
  • 3.78 in (96 mm)
  • 3.78 in (96 mm)
  • 12.2:1
  • Full RPM Range: 5000 - 6000 RPM
  • Integrated, Electric Actuation | Angle (maximum): 31° from center, either direction
  • Through Propeller (Except in Reverse Under 2500 RPM)
  • TCI Microcomputer
  • Recommended: Yamalube® 4M (See owner's manual)
  • Wet Sump
  • Recommended: Thermostatic Control
  • (25/14) 1.79
  • Forward, Neutral, Reverse
  • Direct Injection / Up to 2900 PSI
  • ILMAR7E-9 / Iridium
  • System: Electric w/ PTT
  • Output at W.O.T.: 100 Amp Gross, Max
  • Ethanol Blend Limit: 10% Maximum
  • Recommended: Octane 89 | Recommended Filtration: Yamaha 10-Micron Fuel / Water Separating Filter (external)
  • Degree of Tilt: -4° through +73° | Degree of Trim: -4° through +16° | Mounting Centers: 28.5"
  • Shaft: 25" - 30" - 35"
  • 8.2 Quarts (7.8 L) | 7.9 Quarts (7.5 L)
  • 952 lbs (432 kg) / 977 lbs (443 kg) / 999 lbs (453 kg)
  • Intake: 32 | C.A.R.B. Rating: 3-Star
  • Limited 5-Year Pleasure, 3-Year Government, 1-Year Commercial