Yamaha Outboards 350HP | LF350USA2

Yamaha LF350USA2 Outboard: The Current-Generation 350HP V6 Counter-Rotating Offshore Powerhouse with a 30-inch Shaft

Command the most demanding offshore conditions with the all-new Yamaha LF350USA2 outboard. This groundbreaking 350-horsepower V6 engine redefines big power in a remarkably lightweight package. Precisely engineered for exhilarating speed and immense torque, the LF350USA2 is the definitive choice for a wide range of large offshore vessels. Its counter-rotating (left-hand) rotation makes it the perfect companion for a standard rotating (F350USA2) outboard in multi-engine setups, ensuring balanced steering and optimal boat handling.

The LF350USA2 is built around a newly upgraded 4.3-liter V6 engine block. This ensures not only incredible durability but also class-leading fuel efficiency. With an ultra-long 30-inch (U) shaft length, this model is perfectly suited for boats requiring a deeper shaft for optimal performance, often seen on larger center consoles, catamarans, or specialized multi-engine applications. This provides superior propeller immersion, enhancing both thrust and stability. The “USA2” designation signifies its state-of-the-art integrated Digital Electric Steering (DES) and full Helm Master EX® compatibility. This integration represents Yamaha’s latest advancements in intelligent boat control, offering an unparalleled level of precision and convenience. This model thus establishes a truly dominant and sophisticated presence on your transom, now often available in striking new color options.

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Redefining Offshore Performance: Power, Efficiency, and Control in Harmony

The Yamaha LF350USA2 represents a significant leap forward in outboard technology. Its new 4.3L V6 platform delivers a superior power-to-weight ratio. This makes it over 65 pounds lighter than its closest competitor while still producing formidable 350 horsepower. This lighter weight translates to improved boat performance and efficiency. It also broadens the range of boats it can power.

Beyond its impressive power, the LF350USA2 offers extraordinary integrated boat control. The integrated Digital Electric Steering (DES) eliminates external steering pumps and hydraulic lines. This results in a cleaner, uncluttered transom and exceptionally precise steering. When paired with Yamaha’s Helm Master EX® system, boaters gain access to intuitive joystick control, advanced autopilot features, and innovative SetPoint™ modes. These collectively redefine the offshore experience. For instance, maintaining position over a fishing spot becomes remarkably easy. The LF350USA2 also features modern aesthetic and functional refinements, ensuring your boat not only performs exceptionally but also commands attention.

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Key Features of the LF350USA2: Engineered for the Demands of the Open Water

Explore the advanced technologies, robust engineering, and meticulous design details. These factors establish the Yamaha LF350USA2 as a premier choice for high-performance offshore applications.

Counter-Rotating (Left-Hand) Rotation

The “LF” in LF350USA2 signifies its counter-clockwise (left-hand) rotation. This makes it an essential component in multi-engine installations. It perfectly balances the torque of a standard rotating (F350USA2) outboard. This leads to superior handling and efficiency.

New 4.3L V6 Engine Block

The heart of the LF350USA2 is its entirely new 4.3-liter V6 engine block. This is a significant upgrade from previous 350hp models. It features larger intake and exhaust valves. It also boasts an 81mm electronic throttle valve. This boosts airflow and combustion. Consequently, it delivers robust torque across all RPMs.

Exceptional Power-to-Weight Ratio

Weighing in at approximately 642 pounds (291 kg), the LF350USA2 boasts the best power-to-weight ratio in its class. This lighter design significantly improves boat performance. It also enhances fuel economy. Furthermore, it expands the range of suitable boat applications.

High-Output Charging System

Power all your sophisticated onboard electronics with unwavering confidence. The LF350USA2’s advanced charging system produces up to 70 gross amps. More importantly, it delivers over 30 net amps at idle. This is nearly double the output of comparable outboards. This robust power ensures your batteries remain charged, even with multiple demanding accessories.

30-inch (U) Shaft Length

The “U” in LF350USA2 indicates its specific 30-inch (762mm) shaft length. This “ultra-long” shaft is designed for boats requiring slightly deeper transom height. This is often necessary for optimal performance on larger boats or in specific twin or triple engine setups. It provides versatile mounting options.

Thrust Enhancing Reverse Exhaust (TERE)

Achieve exceptional control and precision in reverse. Yamaha’s TERE system cleverly diverts exhaust gases away from the propeller. This occurs at low RPMs (below 2,500). As a result, the propeller bites clean water. This significantly increases reverse thrust. It also greatly improves maneuverability for tasks like precise docking or backing down on fish.

TotalTilt™ for Effortless Operation

Simplify engine tilting with Yamaha’s exclusive TotalTilt™ feature. A quick double-tap of the trim/tilt button initiates a full tilt up or down. This makes trailering, mooring, and prop inspection quick and effortless. (Note: TotalTilt™ may be factory-defaulted to “OFF” for user preference, allowing activation as desired.)

Enhanced Durability and Serviceability

Built to withstand the harshest marine environments, the LF350USA2 features heavy-duty construction. It incorporates an upgraded gearcase with a redesigned clutch dog. This ensures stronger torque transfer. Plasma-fused sleeveless cylinder technology provides exceptional strength and reduces friction. An improved water sensor and increased oil cooler capacity further boost reliability.

Modern, Sleek Design and Color Options

Inspired by the flagship XTO Offshore series, the LF350USA2 sports a fresh cowling design. It includes raised chrome graphics and a redesigned rear panel. A water-draining air duct and optimized cowling exhaust port keep components cool. This provides a clean, premium look while enhancing functionality. This “USA2” model is also explicitly available in traditional Yamaha gray, pearlescent white, or the new classic white finishes.

Technical Specifications: Yamaha LF350USA2

• Engine Type: 4-Stroke, 24-Valve, DOHC with VCT, 60° V6
• Prop Shaft Horsepower: 350 hp (257.4 kW) @ 5500 RPM
• Displacement: 4256 cm³ (4.3L)
• Fuel Induction System: Electronic Fuel Injection (EFI)
• Alternator Output: 70 A (Gross), 30+ A (Net @ Idle)
• Starting System: Electric Starter
• Steering: Integrated Digital Electric Steering (DES)
• Trim Control System: Power Trim and Tilt with TotalTilt™
• Gear Ratio: 1.75:1
• Shaft Length: U: 762 mm (30 inch)
• Dry Weight: Approx. 291 kg (642 lbs)
• Propeller Rotation: Counter-Clockwise (Left-Hand / Counter-Rotating)
• Recommended Fuel: Unleaded gasoline (minimum 89 octane)
• Controls: Digital Electronic Controls (DEC) – Required for full functionality and Helm Master EX compatibility.

Essential Accessories for Your LF350USA2

Maximize your outboard’s performance. Seamlessly integrate it with your boat’s systems. Use these genuine Yamaha accessories:

• Yamaha Helm Master EX® System Components: Complete your integrated control system. Get advanced joystick, autopilot, and SetPoint™ functionalities.
• Yamaha CL5 / CL7 Digital Displays: These premium touchscreen displays provide comprehensive engine data. They also offer intuitive system control.
• Yamaha Saltwater Series II® Propellers: Designed to complement the LF350’s power, these propellers optimize thrust and efficiency, especially in multi-engine setups.
• Yamaha 10-Micron Water Separating Fuel Filter: Provide superior protection for your fuel system. This ensures long-term engine health and performance.

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Command the Horizon with Unmatched Power and Elegance

The Yamaha LF350USA2 is more than just an outboard. It’s a meticulously engineered masterpiece. It is designed to deliver the ultimate offshore experience. With its class-leading power-to-weight ratio, counter-rotating design for balanced rigging, 30-inch shaft for versatile applications, integrated digital control, best-in-class charging, and refined aesthetics, this 350HP V6 Offshore engine is the definitive choice for boaters. They demand the highest level of performance, reliability, and sophistication for their offshore vessels.

Ready to transform your boating adventures with the ultimate in offshore power and control? Explore the Yamaha LF350USA2 today. Contact our marine experts for current pricing and availability. Let us help you equip your boat with the ultimate in offshore propulsion.