Yamaha LF350ESA 350HP Outboard – 35in Shaft, Counter Rotation
Quiet by design, Yamaha LF350ESA runs on 350 horsepower. Counter rotation balances torque against a matched twin engine. A fit for offshore center consoles and sport boats. Boaters pick it for a straightforward, low-maintenance setup.
- 350 horsepower, ready to run
- Shaft length 35 inches
- Counter-rotating gears for twin engines
- Built for sustained offshore running
- Balances torque on twin installs
Description
Navigating towering multi-engine transoms requires the extreme 35-inch reach of the counter-rotating Yamaha LF350ESA to maintain absolute propeller bite. The upgraded 4.3-liter V6 translates fly-by-wire throttle inputs into explosive acceleration, pushing extra-deep transom cruisers safely over aggressive ocean swells. Verifying your exact twin-engine bracket ensures this 35 inch ultra long shaft counter rotating outboard aligns securely without causing dangerous water pump starvation.
Eradicate dangerous port-side tracking instability permanently by pairing this specialized left-hand gearcase with your primary starboard engine. You pilot massive commercial vessels safely across treacherous coastal inlets while the built-in Digital Electric Steering system executes flawless directional changes. Engineers cast the 263 kg ultra-long lower unit using specialized anti-corrosion marine aluminum alloys. This structural barrier stops galvanic decay completely when repowering large offshore vessels for daily saltwater exposure.
Key Features of Yamaha LF350ESA
- Counter-Rotating Gearcase: Cancels the massive lateral thrust of a starboard engine, keeping twin-engine performance hulls tracking perfectly straight underway.
- 35-Inch Ultra-Long Shaft: Reaches incredibly deep beneath towering offshore transoms, preventing water pump starvation in heavy ocean chop.
- Integrated Digital Electric Steering (DES): Eliminates messy external hydraulic cylinders and pumps, delivering sports-car-like handling and zero steering fatigue during long runs.
- 4.3-Liter DOHC Block: Breathes massive volumes of clean air efficiently, generating 350 horsepower effortlessly to lift heavy fiberglass hulls onto plane.
- Digital Electronic Control (DEC): Translates hand movements into instant electronic commands, eliminating mechanical cable slop during precise marina maneuvering.
- Variable Camshaft Timing (VCT): Shifts intake timing dynamically to boost low-end and midrange torque, maximizing acceleration for heavy offshore boats.
- 70-Amp High-Output Alternator: Generates massive electrical current continuously, keeping deep cycle house batteries fully charged for heavy-duty marine electronics.
- 1.75:1 High-Speed Gearcase: Spins aggressive high-pitch propellers efficiently, translating massive big block torque directly into forward vessel momentum.
- Hydraulic Power Trim: Adjusts the running angle dynamically via the binnacle switch, optimizing bow attitude across aggressive offshore swells.
- Clean Four-Stroke Combustion: Burns fuel highly efficiently without oil mixing, easily meeting strict local waterway emissions regulations and EPA standards.
Why Choose Yamaha LF350ESA
This advanced 35-inch block acts strictly as a high-end fly-by-wire power plant designed for the port side of dual-engine applications demanding extreme shaft lengths. Substituting a mechanical control model sacrifices electronic shifting entirely. Upgrading your digital throttle syncing network is mandatory for smooth engine communication.
- Verify your twin-engine transom bracket accommodates a 35-inch shaft length safely.
- Link the DEC module to your master binnacle to synchronize shift commands perfectly.
- Navigate restricted coastal fisheries legally utilizing advanced four-stroke combustion.
Ideal Application and Vessel Fitment
This 350-horsepower drive-by-wire block is engineered strictly for extra-deep transom offshore vessels, massive luxury pontoons, and large coastal cruisers demanding a 35-inch shaft. Operating as the port-side drive equipped with integrated DES, it translates electronic throttle data instantly, keeping performance hulls tracking perfectly straight at high cruising speeds. It thrives in competitive offshore environments where balancing massive thrust requires precise fly-by-wire power without sacrificing absolute reliability.
Warranty, Support and Maintenance
Authorized recreational operation receives a 3-Year Limited Pleasure Warranty alongside exceptional factory support. Registered commercial applications fall under a strict 1-Year Commercial Warranty with separate terms applied to the block. Scheduled maintenance requires replacing gearcase lubricants and changing oil filters at manual-specified intervals. Always save all physical service records. Your engine serial number acts as the only way to source exact genuine replacement parts. For product details and order support, Mulmotor offers assistance before your purchase is placed.
Yamaha 350HP LF350ESA Specs
| Brand | Yamaha |
| Full Model Code | LF350ESA |
| Country of Origin | Japan |
| Engine Family/Series | V6 Offshore (Gray Counter Rotation) |
| Engine Type | V6 60° / 24-Valve DOHC / 4-Stroke |
| Displacement | 4.3 Liters (4256 cc) |
| Horsepower | 350 HP @ 6000 RPM |
| Full Throttle RPM Range | 5000 - 6000 RPM |
| Fuel Induction System | EFI (Electronic Fuel Injection) / VCT |
| Alternator Output | 70 Amps (Gross) |
| Gear Ratio | 1.75:1 |
| Shaft Length | 35" (Ultra-Long) |
| Dry Weight | 263 kg (580 lbs) |
| Bore x Stroke | 96 x 96 mm |
| Starting & Steering System | Electric w/ DES (Digital Electric Steering) |
| Trim/Tilt Method | Power Trim & Tilt |
| Oil Capacity | 6.3L (with filter) |
| Recommended Fuel | 89 Octane |
| Standard Warranty | 3-Year Pleasure / 1-Year Commercial |
| Application | Port-side engine for multi-engine offshore hulls and luxury day boats (30' - 40'). |














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