4.3L V6 Offshore F350
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.
Meet the Lineup
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
350 HP
Engine Comparison
| Weight † | 286 kg (629 lbs) / 291 kg (642 lbs) / 296 kg (653 lbs) |
|---|---|
| Full Throttle RPM Range | 5000 ~ 6000 rpm |
| Fuel Induction System | EFI |
| Recommended Engine Oil | Yamalube® 4M (See owner's manual) |
| Engine Type | V6 |
| Displacement | 4.3L |
| Bore x Stroke | 96 x 98mm (3.78 x 3.86 in) |
| Prop Shaft Horsepower | 350 @ 6000 |
| Alternator Output at W.O.T. | 50 – 70 amp |
| Compression Ratio | 11.0:1 |
| Recommended Fuel | Octane 89 |
| Recommended Fuel Filtration | Yamaha 10-Micron Fuel / Water Separating Filter (external) |
| C.A.R.B. Rating | 3 Star |
| Exhaust | Through Propeller (Except in Reverse Under 2500 RPM) |
| Intake | 24 |
| Ignition | TCI Microcomputer |
| Spark Plug | ILMAR7E-9 / Iridium |
| Starting System | Electric w/ PTT |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 7.9 L/ 7.6 L |
| Recommended Cooling | Thermostatic Control |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | 1.75:1 |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | 25" - 30" - 35" |
| Degree of Tilt | 69° |
| Degree of Trim | -3° through +16° |
| 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 |
† Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).
350 HP
Compatible Controls
Compatible Gauges
Prop Selector
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visit yamaha prop selector
| Boat Model: Engine: Bulletin: |
Bennington 25QSBA F350XSA View |
|---|---|
| Boat Model: Engine: Bulletin: |
Regal LX6 F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Tidewater 3100 Carolina Bay F350XSA2 / LF350XSA2 View |
| Boat Model: Engine: Bulletin: |
Freeman 37 VH LF350USA2 / F350USA2 / LF350USA2 / F350USA2 View |
| Boat Model: Engine: Bulletin: |
World Cat 325 CC LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Regal 38 SAV LF350XSA2 / F350ESA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Bennington 27QXSBWAX2 LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Key West 291FS F350XSA2 / LF350XSA2 View |
| Boat Model: Engine: Bulletin: |
Sea Pro 322 Offshore F350XSA2 / LF350XSA2 View |
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Sea Fox 368 Commander LF350USA2 / F350ESA2 / F350USA2 View |
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Sea Hunt Ultra 255 SE F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Southport 33 DC LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Godfrey XP 2500W F350XSA View |
| Boat Model: Engine: Bulletin: |
Cobia 301 CC LF350XSA / F350XSA View |
| Boat Model: Engine: Bulletin: |
Cobia 320 CC LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Pathfinder 2400 TRS F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Pathfinder 2600 TRS F350XSA2 View |
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Pathfinder 2500 Hybrid F350XSA View |
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Pathfinder 2600 HPS F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Pursuit S328 Sport LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Pursuit DC326 LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Pursuit OS355 LF350XSA2 / F350USA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Pursuit DC365 LF350XSA2 / F350USA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Cobia 240DC F350USA2 View |
| Boat Model: Engine: Bulletin: |
Grady White 285 Freedom LF350XSA4 / F350XSA4 View |
| Boat Model: Engine: Bulletin: |
Grady White 307 Freedom LF350XSA4 / F350XSA4 View |
| Boat Model: Engine: Bulletin: |
Grady White 326 Canyon LF350XSA4 / F350XSA4 View |
| Boat Model: Engine: Bulletin: |
Grady White 306 Canyon LF350XSA4 / F350XSA4 View |
| Boat Model: Engine: Bulletin: |
Grady White 325 Freedom LF350XSA4 / F350XSA4 View |
| Boat Model: Engine: Bulletin: |
Grady White 235 Freedom F350XSA4 View |
| Boat Model: Engine: Bulletin: |
Grady White 236 Fisherman F350XSA4 View |
| Boat Model: Engine: Bulletin: |
Jupiter 32 LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Pursuit OS 325 LF350USA2 / F350USA2 View |
| Boat Model: Engine: Bulletin: |
Pathfinder 2400 Open F350XSA2 View |
| Boat Model: Engine: Bulletin: |
World Cat 325 DC LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Berkshire Sport CL9 DC Twin LF350XSA / F350XSA View |
| Boat Model: Engine: Bulletin: |
Regulator 30 XO LF350USA2 / F350USA2 View |
| Boat Model: Engine: Bulletin: |
Regulator 34CC LF350XSA2 / F350ESA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Sea Hunt Gamefish 30 CB F350XSA2 / LF350XSA2 View |
| Boat Model: Engine: Bulletin: |
Warrior V208 F350USA View |
| Boat Model: Engine: Bulletin: |
Twin Vee 400 GFX2 LF350XSA2 / F350XSA2 / LF350XSA2 / F350XSA2 View |
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Sportsman Open 302 F350XSA2 / LF350XSA2 View |
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Caymas 30CT LF350USA2 / F350USA2 View |
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Bay Rider 269 F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Grady White 300 Marlin LF350XSA4 / F350XSA4 View |
| Boat Model: Engine: Bulletin: |
Grady White 336 Canyon LF350XSA4 / F350USA4 / F350XSA4 View |
| Boat Model: Engine: Bulletin: |
Grady White 255 Freedom F350XSA4 View |
| Boat Model: Engine: Bulletin: |
Regulator 24 XO F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Parker 2420 F350USA2 View |
| Boat Model: Engine: Bulletin: |
Cobia 285CC LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Hewes Redfisher 21 F350XSA View |
| Boat Model: Engine: Bulletin: |
Hurricane 24CC F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Godfrey SP 2700 SFLC F350XSA View |
| Boat Model: Engine: Bulletin: |
Hurricane SD 2600 F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Warrior V238 F350USA View |
| Boat Model: Engine: Bulletin: |
Cobia 350 CC F350XSA2 / F350USA2 / LF350XSA2 View |
| Boat Model: Engine: Bulletin: |
Tidewater 2500 Carolina Bay F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Bennington 27RXSBWAT2 F350XSA/LF350XSA View |
| Boat Model: Engine: Bulletin: |
Bennington 27QSBAX2 LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Regulator 31 LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Pair Marine 27 CC LF350XSA2 / F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Aloha Patriot F350XSA2 View |
| Boat Model: Engine: Bulletin: |
Pair Marine 24 Deep Vee F350USA2 View |
| Boat Model: Engine: Bulletin: |
Cobia 285 Open LF350XSA / F350XSA View |
| Boat Model: Engine: Bulletin: |
Grady White 345 Freedom LF350XSA4 / F350USA4 / F350XSA4 View |
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WHITE
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GRAY
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CLASSIC
Gallery
LIGHTEST
IN ITS CLASS
The new, 4.3L V6 Offshore F350 offers the best power-to-weight in its class, coming in more than 65 pounds lighter than comparable outboards.
Features & Benefits
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.
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.
A new clutch dog design, machined with more teeth, increases torque transfer from powerhead to propeller.
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.
Iridium spark plugs work together with Yamaha’s new fuel injection control mapping to produce a lengthened injector duration for more power.
Helm 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.
A 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.
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.
RELIABILITY & DURABILITY
