2026 Yamaha Outboards V6 4.2L 300 hp
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Sand N Sea Marine Group | Stuart, FL
When heading out for a day of coastal or offshore fishing, reliable power and dependable performance are paramount. The Yamaha V6 4.2L Outboard is consistently recognized as one of the most trusted engines on the water, blending legendary reliability with modern engineering advancements.
Unmatched Power and Performance from the Yamaha V6 Offshore ...
[read more]When heading out for a day of coastal or offshore fishing, reliable power and dependable performance are paramount. The Yamaha V6 4.2L Outboard is consistently recognized as one of the most trusted engines on the water, blending legendary reliability with modern engineering advancements.
Unmatched Power and Performance from the Yamaha V6 Offshore Engine
The renowned power output of this 300 hp outboard makes it an exceptional choice for serious anglers. The advanced 4.2-liter displacement is engineered to deliver substantial torque, providing effortless pulling power whether you are trolling or navigating open waters.
Advanced Engineering and Build Quality
Yamaha incorporates state-of-the-art materials into the core of this powerful engine. Key design features include:
- Plasma-Fused Cylinder Walls: These walls boast strength exceeding steel, allowing for larger cylinder bores without increasing overall size. This results in enhanced power delivery and increased displacement while maintaining a lighter weight profile.
- Micro-Textured Cylinders: The unique internal surface design helps minimize friction loss across the engine cycle, significantly boosting performance and improving long-term reliability of your Yamaha V6 outboard.
- Lightweight Construction: Every component has been optimized for maximum efficiency. This weight reduction ensures top operational performance without ever compromising durability or structural integrity.
Superior Efficiency and Modern Controls
Modernizing the experience, this powerful engine features integrated digital electric steering and advanced fuel management systems that enhance both control and gas hours.
Optimized Fuel Economy
For maximum efficiency when running your 300 hp V6 outboard, Yamaha utilizes electronically controlled throttle valves paired with Precision Multi-Point Fuel Injection. This system constantly monitors atmospheric conditions and engine status through multiple sensors, ensuring a perfect mix of air and fuel at all times.
Precision Control for Fishing
Control on the water is enhanced dramatically by integrated technology:
- Digital Electric Steering: Provides responsive handling that makes maneuvering in tight spots or adjusting heading simple.
- Sub-Idle Trolling Speeds: Features like Pattern Shift automatically adjust engine speed to achieve precise trolling rates, allowing you granular control from slow idling up to full throttle power.
- Autopilot Functionality (Helm Master EX): This advanced system allows users to set a target speed or heading and maintains it autonomously, adjusting for wind and current changes while providing incredible peace of mind during long days offshore.
Key Specifications Summary
Whether you need the engine for local coastal trips or extended deep-sea fishing excursions, this 4.2L Yamaha V6 outboard is built to perform.
Engine and Performance Details
- Displacement: 4.2 Liters
- Maximum Horsepower Output: 300 HP (at specified RPM)
- Fuel Type Recommendation: Octane Grade 89 Gas
- Alternative Shaft Lengths Available: Options include 25”, 30”, and 35” to match various boat configurations.
Operational Features
- Steering System: Integrated Digital Electric Actuation for precise, responsive control.
- Fuel Management: Precision Multi-Point Fuel Injection ensures optimal fuel efficiency under all load conditions.
- Serviceability: Designed with easy access and robust components to maintain reliable operation year after year in demanding offshore environments.
| Condition | NEW | |
| Year | 2026 | |
| Make | Yamaha Outboards | |
| Model | V6 4.2L 300 hp | |
| Vehicle Type | Outboard | |
| Category | Four Stroke | |
| VIN | 6KFN1025411 | |
| Engine | F300NCB2 | |
| Propulsion | Single Outboard | |
| Propulsion Type | Powered | |
| Number of Engines | 1 | |
| Engine Type | YAMAHA | |
| Engine Power | 300 HP | |
| Engine Information | F300NCB2 | |
| Fuel Type | Gas |
| Engine | |
| Engine Type | V6 |
| Engine Power | Prop Shaft: 300hp at 5500 rpm |
| Displacement | 4.2L |
| Bore | 3.78 in (96 mm) |
| Stroke | 3.78 in (96 mm) |
| Compression Ratio | 10.3:1 |
| Throttle | Full RPM Range: 5000 ~ 6000 rpm |
| Steering | Integrated, Electric Actuation | Angle (maximum): 32° from center, either direction |
| Exhaust | Through Propeller |
| Ignition | TCI Microcomputer |
| Oil Type | Recommended: Yamalube® 4M (See owner's manual) |
| Lubrication | Wet Sump |
| Cooling | Recommended: Thermostatic Control |
| Gear Ratio (Primary) | 1.75:1 |
| Gear Shifter | Forward, Neutral, Reverse |
| Induction | EFI |
| Spark Plug | |
| Spark Plug | LFR6A-11 |
| Electric | |
| Starter | System: Electric |
| Alternator Output, Maximum | Output at W.O.T.: 50 - 70 Amp |
| Fuel System | |
| Fuel System | Ethanol Blend Limit: 10% Maximum |
| Fuel Type | Recommended: Octane 89 | Recommended Filtration: Yamaha 10-Micron Fuel / Water Separating Filter (external) |
| Dimensions | |
| Length | Shaft: 25" - 30" - 35" |
| Dimensions | Degree of Tilt: Mechanical 67°, Digital Electric Steering 69°, Bolt-on steering 70° | Degree of Trim: -3° through +16° | Mounting Centers: 28.5" |
| Capacities | |
| Oil capacity | 6.3L/6.0L |
| Weights | |
| Weight | 551 lbs (250 kg) /562 lbs (254 kg) /588 lbs (265 kg) |
| Features | |
| Features | Intake: 24 | C.A.R.B. Rating: 3-Star |
| Warranty | |
| Warranty | Limited 3-Year Pleasure, 3-Year Government, 1-Year Commercial |
| Engine Power | 300 HP |
A tangerine sunrise alights the shore as you load up the gear for a morning of coastal fishing. Your buddies are rearing to go—as are your twin V6 Offshore outboards. Known for their power, efficiency and outstanding 96 percent reliability,** Yamaha’s V6 4.2-liter outboards are some of the most trusted V6’s on the water. They’re also some of the nimblest, with integrated digital electric steering. This makes them more responsive than ever. Our V6 Offshore outboards have proven once again that even a trusted favorite can take an exciting turn.
Our V6 4.2-liter F300 is a reliable, offshore favorite—and it's only getting better. It now features a fresh, new cowling design (with engine-mounted Propeller Indicator Lights if rigged with Helm Master® EX), new integrated digital electric steering*, rerouted exhaust for enhanced reverse thrust and is available in Yamaha gray or pearlescent white. It’s destined to be a top choice offshore for years to come.
Features may include:
Recommended fuel: 89 Octane
Shaft lengths available: 25”, 30” and 35” (30" and 35” on F300 DEC only)
Alternator output: up to 70 ampPower and Performance
4.2 Liter Big Bore DisplacementYamaha’s 4.2-liter V6 Offshore outboards feature plasma-fused sleeveless cylinder walls, which are 60 percent harder than steel. That means larger cylinder bores for increased displacement, resulting in more power and torque, without increasing outer cylinder dimensions. It also results in dramatically lighter weight and better cooling, and “micro-textured” cylinder walls that help decrease friction loss, and further increase performance and enhance reliability.
Fuel EfficiencyFor maximum power and efficiency, electronically controlled throttle valves work in concert with Precision Multi-Point Fuel Injection to ensure a precise mix of air and fuel. In addition, six individual sensors constantly provide vital atmospheric and engine conditions to the Engine Control Module (ECM), which makes adjustments for performance.
Light WeightFrom the top of the cowling to the tip of the propeller shaft, every ounce of weight-savings has been realized for maximum performance without sacrificing durability.
Convenience and Control
Precise and Convenient TrollingSpeed Control with Pattern Shift automatically bumps engines into and out of gear to achieve sub-idle trolling speeds. Helm Master EX with Autopilot even allows you to set a target speed as low as 0.25 mph. This cues the system to auto-adjust RPM and shifting to achieve that target speed—all while adjusting for conditions such as wind or current. This provides incredible control of trolling speed—from in-gear idling to slowing to a crawl.
More Functionality / SecurityHelm Master EX includes Autopilot with Heading/Course Hold, 10+ automated modes for fishing and relaxing, in-mode joystick adjustability and the expanded ability to control up to five outboards. There’s even an optional theft-deterrent system, Y-COP®, which disables the ignition and fuel systems while docked.
Top Speed and Smooth ShiftingOur Saltwater Series II™ HP Propeller can boost top-end speed up by nearly 2 mph in lighter-weight applications. It’s also equipped with our patented Shift Dampener System (SDS®) for smoother, quieter shifting.
Estimate Payments
Payment calculations are just estimates. Rates and terms vary day to day. Not an agreement, informational purposes only. Contact dealer for current rates, terms, and payment plans, etc.
Advertised pricing excludes applicable taxes title and licensing and are subject to change without notice. Pricing may exclude any added parts, accessories or installation unless otherwise noted. Sale prices include all applicable offers. Not all options listed available on pre-owned models. Contact dealer for details.
