Yamaha F250XB

The Yamaha F250XB represents the absolute pinnacle of high-horsepower mechanical engineering. Purpose-built for serious offshore anglers and commercial operators who demand maximum displacement without the added complexity of digital fly-by-wire infrastructure, this engine utilizing Yamaha’s legendary 4.2-liter Big Bore V6 block. By utilizing a highly advanced plasma fusion process rather than conventional steel cylinder liners, Yamaha successfully minimized weight while maximizing raw internal volume, yielding a motor that offers incredible power-to-weight efficiency and superior heat dissipation.

At the core of its performance profile is a 24-valve, Double Overhead Camshaft (DOHC) layout equipped with Variable Camshaft Timing (VCT). The VCT system precisely manages intake valve timing relative to engine load, creating a massive wave of mid-range torque and an explosive hole shot that easily lifts heavy offshore hulls out of the water. Operating cleanly on standard 87-octane fuel and controlled via traditional mechanical cables, the F250XB delivers premier V6 four-stroke reliability alongside simplified rigging parameters.

Models Available:

• F250XB: Standard right-hand mechanical rotation with a 25-inch extra-long shaft. The industry standard for high-horsepower repowers, heavy-duty coastal center consoles, and offshore fishing platforms.

Key Features:

• Displacement: 4169cc (4.2L) Big-Bore 60° V6 (DOHC 24-Valve)

• Shaft Length: Extra-Long (635mm / 25″)

• Control Type: Remote Mechanical (Traditional throttle/shift cables)

• Fuel system: Electronic Fuel Injection (EFI)

• Alternator Output: Up to 70 Gross Amps (Highly capable of powering complex electronics arrays, radar systems, and multiple livewell pumps)

• Weight: approx. 254 kg (561 lbs)

• Sleeveless plasma-fused cylinder walls for enhanced structural durability and cooling

• Shift Dampener System (SDS™) compatible for completely silent gear engagement

Ideal For: Large offshore center consoles, heavy walkarounds, multi-engine sportfishing hulls, and high-performance commercial workboats.