Yamaha XTO Offshore® 450HP

Manufacturer: Yamaha

The XTO Offshore^® 450 packs everything boaters love about the original XTO outboard—the durability, power and reliability—plus extra horses. With impressive stats such as 12.3:1 compression ratio for outstanding fuel economy and power and industry-first features such as an integrated electric steering system and Phase Angle Control Charging, it’s purpose-built for the extremes of going offshore.

Award-winning Phase Angle Control Charging System
Available in signature Yamaha gray or new pearlescent white
450 hp on less-expensive 89-octane gasoline

Specifications

Specifications

Weight †	437 kg (963 lbs) / 448 kg (988 lbs) / 458 kg (1010 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	450hp at 6000 RPM
Alternator Output at W.O.T.	102 Amp Gross, Max (up to 96 NET at idle)
Compression Ratio	12.3:1
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-valve
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