YAMAHA XTO 450HP V8
The XTO 450HP V8 turns 5.6 litres of naturally aspirated muscle into offshore authority you can meter out precisely. Direct fuel injection, integrated Digital Electric Steering and Helm Master® EX compatibility keep big power repeatable, predictable and entirely yours to command.
XTO 450HP V8
Made For The Long Way Out
The XTO 450HP V8 isn’t simply built — it’s reinforced. Its 5559 cc, 32-valve DOHC architecture runs direct fuel injection, Variable Camshaft Timing and a 12.3:1 compression ratio, pulling cleanly to a 6000 r/min ceiling. The result is thrust that arrives the instant you ask for it, and then repeats all day, however hard the water pushes back.
Beneath the polished cowling sits genuine offshore hardware — heavy-duty gears, oversized shafts and low-friction cooling engineered for sustained load rather than short bursts. Drive-By-Wire replaces the mechanical linkage outright, so shifts stay clean and a multi-engine set-up stays in step, while Helm Master® EX compatibility makes joystick docking look close to choreographed. A 102 A alternator, 96 A of it charging batteries, keeps refrigeration, plotters and lighting running long after the anchor drops.
DETAILS
ABOUT XTO 450HP V8
ENGINE
| ➢ CATEGORY | Premium Marine Engines |
|---|---|
| ➢ Engine type | 32-Valve, DOHC with VCT, 60 deg. V8 |
| ➢ Displacement | 5559 cc |
| ➢ Bore x stroke | 96.0 × 96.0 mm |
| ➢ Compression ratio | 12.3:1 |
| ➢ Fuel induction system | Direct fuel injection |
| ➢ Lubrication system | Wet sump |
| ➢ Engine oil capacity | 7.8 L / 7.5 L (with / without oil filter replacement) |
| ➢ Ignition / advance system | TCI |
| ➢ Alternator | 102 A (battery charging: 96 A) |
DIMENSIONS
| ➢ Overall length | 1217 mm |
|---|---|
| ➢ Overall width | 652 mm |
| ➢ Overall height | X: 2059 mm, U: 2186 mm, E: 2313 mm |
| ➢ Engine transom height | X: 640 mm, U: 767 mm, E: 894 mm |
| ➢ Steering angle | 31 deg. each direction |
| ➢ Dry weight | 447 – 468 kg |
ADDITIONAL FEATURES
| ➢ Maximum propeller shaft output | 331.0 kW |
|---|---|
| ➢ Full throttle operating range | 5000 – 6000 r/min |
| ➢ Idling speed | 650 – 750 r/min |
| ➢ Shallow water drive | PTT: variable position |
| ➢ Gear shift | F-N-R |
| ➢ Gear ratio | 1.79 (25/14) |
| ➢ Gear oil capacity | 1.950 L / 1.830 L |
SERENITY
Big Engine, Small Movements
TotalTilt™ reduces tilting to a single double-press, backed by a tilt limiter and an audible warning. Thrust Enhancing Reverse Exhaust lifts the exhaust above the anti-ventilation plate, leaving the propeller clean water to push against and sharpening low-speed control noticeably. Add Digital Electric Steering — no pumps, no hoses, no hydraulic drag at the wheel — and easing 447 – 468 kg of V8 into a tight berth becomes a series of small, deliberate decisions.
DESIGN
ENGINE
Sculpted above the waterline and hydrodynamic below, the XTO 450HP V8 wears Yamaha’s premium design language with intent. Equal 96.0 mm bore and stroke and a 60 deg. V8 layout give a maximum 331.0 kW at the propeller shaft, while a front-mounted flushing port lets the cooling passages be rinsed through with the engine standing quiet.
WARRANTY
5 YEAR PROMISE
Enjoy Yamaha’s industry-leading limited warranty, offering up to 5 years of peace of mind. The XTO 450HP V8 is built to exacting standards with proven dependability. Whether you’re navigating calm bays or deep offshore waters, Yamaha’s legacy of excellence keeps you covered.
Contact Us Today
For pricing, availability, and test rides:
GET IN TOUCH YAMAHA VESSELS