New Yamaha 425hp Black XTO Outboard Engine XF425USB

The XTO Offshore 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.

SPECS : 

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
Full Throttle RPM Range    5000 – 6000 RPM
Alternator Output at W.O.T.    100 Amp Gross, Max
Compression Ratio    12.2:1
Fuel Induction System    Direct Injection / Up to 2900 PSI
Weight †    432 kg (952 lbs) / 443 kg (977 lbs) / 453 kg (999 lbs)
Recommended Fuel    Octane 89
Recommended Engine Oil    Yamalube® 4M (See owner’s manual)
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