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XTO 375hp V8

Key Features

Features Gallery
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    High levels of power, torque and control

    XTO stands for Xtreme Thrust Output because this awesome V8 unit delivers a totally new generation of power, performance and precision control never before available. Together, our XTO 375hp V8 and XTO 425hp V8 XTO engines and unique Helm Master® system provide a seamlessly integrated total power and control solution for larger offshore boats. Explore the Extreme.

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    5.6 litres of naturally aspirated V8 power

    At the heart of this flagship powerhouse is Yamaha's very latest technology, taken to new levels. With features like 5-pump Direct Fuel Injection, VCT (Variable Camshaft Timing), DOHC (Double Overhead Camshafts), dual chamber oil pump, 2-stage water pump, quadruple thermostats, our unique in-bank exhaust system … the stage is set.

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    Ultimate efficiency from Direct Injection

    With our constant quest for ever-greater efficiency and economy, industry firsts often happen at Yamaha and the fuel system on the XTO outboards is a good example - it's the first-ever Direct Injection 4-stroke engine. In fact, the XTO outboards are packed with such advances, from the in-water oil change facility to the thrust-enhancing exhaust system.

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    Integrated electric steering - smoothly efficient.

    This highly efficient system, actually built into the motor unit itself, is not only lighter and less complex than a separate hydraulic system, but is cleaner to fit and operate. What's more, the response time for the helmsman is faster and more precise - and the result even smoother.

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    Convenience is important to any owner

    That's why the XTO 375hp V8 XTO has thoughtful features like these: The facility for an in-water gear oil change - with the boat still at the dock. A multi-part cowling that has quick-access locks and allows secure, easy access for maintenance and adjustments. A High Output system to provide stable 72A charging - and 58A charging even at low rpm.

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    Extreme performance demands tough technology.

    There can be no compromise on build quality and reliability at this level, so every bit of the XTO engines are built super-tough. From the massive crankshaft to the torque-absorbing heavy duty gears - and from the extra-large diameter prop shaft to the completely new gearcase design, with its low friction co-efficient and better cooling.

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    Thrust-enhancing exhaust system.

    This engineering concept expels the exhaust via a combination of three different routes, depending on the RPM level. Put simply, the result is around 300% more reverse thrust (than it would have without these measures) and better balance between forward and reverse thrust when manoeuvering with Helm Master® - plus greater efficiency at full power.

Technical Specifications

Download Factsheet
  • Engine
    Engine type
    4-stroke
    Displacement
    5559 cc
    No. of cylinders/Configuration
    60°-V8, 32-valve, DOHC with VCT
    Bore x stroke
    96.0 x 96.0
    Prop shaft output at mid range
    279.6kW / 5,500 rpm
    Full Throttle Operating Range
    5,000 - 6,000 rpm
    Lubrication system
    Direct Fuel Injection
    Ignition / advance system
    TCI
    Starter system
    Electric
    Gear ratio
    1.79 (25:14)
  • Dimensions
    Transom height
    X:640mm U:767mm E:894mm
    Oil pan capacity
    7.8 litres
    Dry weight with propeller
    X: 442.0 kg, U: 453.0 kg, E: 453.0 kg
  • Additional Features
    Control
    Drive By Wire (DBW)
    Trim & Tilt method
    Power Trim & Tilt
    Light coil / Alternator Output
    12V - 90A with rectifier/regulator
    Propeller
    Optional
    Counter Rotation Model
    Available on X, U and E
    Shallow Water Drive
    Standard
    Tilt limitter
    Standard
    Digital Network Gauge II (CL7)
    Optional
    Shift Dampener System (SDS)
    Optional
    Full tilt up angle
    77°
    Remark
    The kW data in this sheet is based on the ICOMIA 28 standard, measured at the prop shaft