2023 Yamaha 300HP For Sale – V6 4.2L – 30″ Shaft

2023 Yamaha 300HP For Sale – V6 4.2L – 30″ Shaft.

Availability: In Stock
Year: 2023
Make: Yamaha
Model: V6 4.2L 300HP – 30″ Shaft
SKU: 39982 Category:


2023 Yamaha 300HP For Sale – V6 4.2L – 30″ Shaft.


Engine TypeV6
Bore x Stroke3.78 x 3.78 in. (96 x 96mm)


Shaft Length30 in.
Weight562 lb. (254 kg)


Propshaft Horsepower300 HP at 5500 RPM
Full Throttle Operating Range5000 ~ 6000 RPM
Gear Ratio / Shift1.75:1 / Forward, Neutral, Reverse
Fuel InductionEFI
Alternator50 – 70 Amp
SteeringIntegrated, Electric Actuation
WarrantyLimited 3-Year Pleasure, 3-Year Government, 1-Year Commercial


Our 4.2-liter F300 is a reliable, offshore favorite—and its only getting better. It now features a fresh, new cowling design (with stern light if rigged with Helm Master® EX), new integrated digital electric steering*, rerouted exhaust for enhance reverse thrust and is available in Yamaha gray or pearlescent white. It’s destined to be a top choice offshore for years to come.

  • 4.2 Liter Big Bore Displacement: Yamaha’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 Efficiency: For 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 Weight: From 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.
  • Throttle Response & Acceleration: Yamaha’s Variable Camshaft Timing system advances and retards the angle of the intake camshaft to dramatically increase power and throttle response in the low- and mid-RPM ranges. This feature helps Yamaha’s new 4.2-liter big-bore V6 outboards deliver awesome hole shot and mid-range acceleration.
  • Responsive Electric Steering: The Yamaha V6 Offshore F300 and F250 are the industry’s very first offshore V6’s offered in digital models with built-in electric steering. This makes them incredibly responsive and also results in a cleaner bilge, with no pumps, hoses, hydraulic lines or connections.
  • Long Range Fuel Economy: Multi-Point Electronic Fuel Injection ensures a precise mix of air and fuel for combustion efficiency
  • Responsive Electric Steering: Built into the F300 and F250, digital electric steering is more responsive and precise and results in a cleaner bilge, with no pumps or hydraulic lines.
  • More Power: Plasma-fused cylinders result in larger cylinder bores for greater displacement, power, torque and reduced weight.
  • Hole Shot & Acceleration: Variable Camshaft Timing (VCT) boosts power and throttle response in the low- and mid-RPM ranges.
  • Charging Power: Our V6 4.2-liter outboards feature up to 70 amps of total alternator output—ample charging for an array of on-board electronic devices.
  • Precise and Convenient Trolling: Speed 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 / Security: Our digital V6 Offshore models are compatible with Helm Master® EX boat control system. Helm Master EX offers functionality including Autopilot with Heading/Course Hold, 10+ automated modes for fishing and relaxing, in-mode joystick adjustability, the expanded ability to control up to five outboards and more. There’s even an optional theft-deterrent system, Y-COP®, which disables the ignition and fuel systems while docked.
  • Top Speed and Smooth Shifting: Our new 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.
  • Fast, Easy Tilting: A new, Yamaha exclusive, TotalTilt™ performs a quick, full trim up or down with the fast, double-tap of a button. This makes trailering quick and easy and is handy when a complete up or down tilt is needed.
  • Powerful, Precise Maneuvering: Thrust Enhancing Reverse Exhaust keeps exhaust bubbles away from the propeller below 2500 RPM and when in reverse. This means the prop bites only clean water, which results in outstanding reverse thrust and control—especially when backing down on fish and when maneuvering around docks.
  • Compatible with mechanical (25” shaft) or digital controls including new Helm Master® EX
  • Recommended fuel: 89 Octane
  • Shaft lengths available: 25”, 30” and 35” (30″ and 35” on F300 DEC only)
  • Alternator output: up to 70 amp
  • Engine Type: V6
  • Displacement: 4.2L
  • Bore x Stroke: 96 x 96mm (3.78 x 3.78 in)
  • Prop Shaft Horsepower: 300hp at 5500 rpm
  • Full Throttle RPM Range: 5000 ~ 6000 rpm
  • Alternator Output at W.O.T.: 50 – 70 Amp
  • Compression Ratio: 10.3:1
  • Fuel Induction System: EFI
  • Weight †: 254 kg (562 lbs)
  • Recommended Fuel: Octane 89
  • Recommended Engine Oil: Yamalube® 4M (See owner’s manual)
  • Recommended Fuel Filtration: Yamaha 10-Micron Fuel / Water Separating Filter (external)
  • C.A.R.B. Rating: 3-Star
  • Exhaust: Through Propeller
  • Intake: 24
  • Ignition: TCI Microcomputer
  • Spark Plug: LFR6A-11
  • Alternator Output: 50 – 70 Amp
  • Starting System: Electric
  • Lubrication: Wet Sump
  • Engine Oil Capacity: 6.3L/6.0L
  • Recommended Cooling: Thermostatic Control
  • Ethanol Blend Limit: 10% Maximum
  • Gear Ratio: 1.75:1
  • Gear Shift: Forward, Neutral, Reverse
  • Shaft Length: 30″
  • Degree of Tilt: Mechanical 67°, Digital Electric Steering 69°, Bolt-on steering 70°
  • Degree of Trim: -3° through +16°
  • Dry Weight with built-in DES: 30″ shaft 283 kg (624 lbs)
  • Dry Weight without built-in DES: 30″ shaft 261 kg (575 lbs)
  • Mounting Centers: 28.5″
  • Steering: Integrated, Electric Actuation
  • Steering Angle (maximum): 32° from center, either direction
  • Warranty: Limited 3-Year Pleasure, 3-Year Government, 1-Year Commercial.

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