2026 Yamaha Outboards  Offshore F350 350 hp 25 in

4.3L V6 Offshore F350
V6 4.3L Digital: 350 hp
Dark blue water. Miles from land. Nothing but you, your crew and the monsters raring to give you a run for your money. Year after year—your love of the offshore remains unchanged. Your tech on the other hand is always the most advanced—including your outboard. The all-new 4.3L V6 Offshore F350 merges all the best tech from our full line of outboards with some impressive tech of its own. The result is a perfectly balanced, deep breathing V6 that delivers jaw-dropping power and the best power-to-weight in its class—the new, 4.3L V6 Offshore F350.

350 HP
Weighing in at 629 pounds and delivering an astounding 11:1 compression ratio, the new 4.3L V6 Offshore F350 creates jaw-dropping power in an incredibly light design. In fact, it boasts the best power-to-weight in its class—by more than 65 pounds. Available in Yamaha gray, pearlescent white or new classic white, the 4.3L V6 F350 is the new knockout offshore.

• Recommended fuel: 89 Octane
• Shaft lengths available: 25”, 30” and 35”
• Alternator output: up to 70 amp

Features may include:

RESPONSIVE POWER

• It’s center-mounted 81mm electronic throttle valve is eight percent larger than the F300. Flanked by identical port and starboard intake manifolds, it creates a well-balance design, smooth air flow and responsive power.

INCREASED COMBUSTION

• A camshaft profile with a higher valve lift allows for longer opening duration for intake and exhaust. Combined with reimagined valve lifters, it creates precise clearance for increased combustion.

MAX TORQUE

• A new clutch dog design, machined with more teeth, increases torque transfer from powerhead to propeller.

CHARGING POWER

• Our 4.3L V6 Offshore F350’s 70-amp alternator produces more than 30 net amps per outboard at idle—nearly double that of Yamaha’s other comparable outboards.

MORE POWER

• Iridium spark plugs work together with Yamaha’s new fuel injection control mapping to produce a lengthened injector duration for more power.

OPTIMIZED CURRENT AND COOLING

• A new cowling exhaust port and stator fan keeps everything under the cowling nice and cool, maximizing available net charging power at all RPM, especially in the lower RPM ranges. The cooling effect is impactful enough to create more available current for the new 4.3L V6 F350 over the 4.2L V6 F300 at all RPM.