Yamaha XF450ESA2 450HP XTO Standard Rotation DEC 35″

Description

The Yamaha XF450ESA2 delivers 450HP through a 35-inch ultra-long shaft, built with standard rotation for multi-engine offshore boats. The 5.6-liter V8 handles extreme high-seas operation, distributing its 5559cc displacement over a 1010 lbs dry weight for rigidity. Built for towering deep-V sterns, the 35-inch shaft ensures complete propeller immersion on large catamarans and express cruisers in open ocean waters.

This powerhead sustains high-speed cruising across long tournament distances within its 5000-6000 RPM range. The 1.79:1 gear ratio translates combustion pressure into a broad torque curve that lifts wide hulls onto plane rapidly. Built on proven Japanese engineering, this platform is designed for mechanical consistency far beyond standard coastal ranges.

Technical Specifications of Yamaha XF450ESA2

• High-pressure direct fuel injection pushes gasoline at 2900 PSI for complete combustion and clean power delivery.
• A 102-Amp gross alternator handles the electrical demands of modern multi-display helms.
• Integrated electric power steering removes traditional hydraulic lines for streamlined rigging and responsive tracking.
• TotalTilt makes trimming easy with a built-in automatic tilt limiter for shallow waters.
• A 7.8-liter oil reservoir keeps components lubricated through long wide-open-throttle runs.
• The standard-rotation lower unit spins clockwise, built for single or primary-engine thrust.

32-Valve V8 Powerhead

The 32-valve DOHC V8 block is engineered to shave weight from the powerhead while accelerating thermal dissipation under severe high-load offshore operations.

Three Stage DFI System

Direct fuel induction pushes fuel straight into each cylinder at pressures topping 2900 PSI for complete combustion. This system produces crisp throttle recovery and reliable starting when navigating treacherous inlets or heavy head seas.

Hydrodynamic Lower Gear Housing

Oversized drive gears housed inside a hydrodynamic lower unit keep drag profiles down during high-speed cruising. This engineering dampens gear-shift vibration while maximizing directional tracking on deep-transom multi-engine hulls.

Integrated Electric Steering System

Steer-by-wire deletes external hydraulic lines and valves for uncompromised helm response, coordinating with the high-capacity 102-Amp gross alternator to power critical open-water electronics.

Fiberglass Boat Hull Integration

Large offshore center consoles, express cruisers, and catamarans from 30 to over 45 feet are a strong match for this outboard. The 35-inch ultra-long shaft prevents propeller ventilation climbing massive rollers in rough open-ocean swells.

Fast Servicing Access Points

A multi-piece cowling detaches smoothly for quick dipstick checks, and drainage pathways isolate waste fluids for clean oil changes right at the marina slip. Pro Tip from the Shop: connect a freshwater wash hose directly to the upper flushing port after every trip to blast salt crystals out of the cooling jacket without starting the engine.