2026 Yamaha Outboards In-Line Four Mechanical 150 hp 20 in

In-Line Four
Digital: 200 hp, 150 hp | Mechanical: 200 hp, 150 hp
Tiller: 200 hp, 150 hp
Tampa bay. Lake Superior. The St. Johns River. Wherever you watch the sun rise you’re likely to find a Yamaha In-Line Four. They’re perfect for all kinds of water—and boaters. For more than a decade Yamaha In-Line Fours have been the go-to for boaters who need light, nimble,  compact power. The F200 and F150 are available in mechanical, digital with integrated steering, and now Power-Assisted Tiller models. Their proven reliability, unparalleled performance, and versatile technology make them perfect for a broad range of boat styles, hulls, and applications. It’s no wonder that year after year, Yamaha’s In-Line Fours increase in popularity.

150 HP
The In-Line Four 150 is one that started it all and it’s more popular than ever. Powerful, light, and compact, it’s mechanical or digital compatible and uses integrated steering, making it more streamlined and responsive than ever before.

• Comes with integrated electro-hydraulic steering for digital models and integrated hydraulic steering for mechanical models
• Only 509 pounds (20” shaft DEC model)
• Available in 20” or 25” shafts
• Powerful 50-amp alternator (2.8-liter digital) or 35-amp alternator (2.7-liter mechanical)
• Digital F150 available in signature Yamaha gray, pearlescent white, and classic white
• Mechanical F150 available in signature Yamaha gray

Features may include: 

Impressive Power-to-Weight

• A proven 16-valve DOHC In-Line design, with four valves per cylinder maximizes efficiency and power. It also streamlines design, giving the F200 impressive power-to-weight.

Optimum Power

• Precision Multi-Point Electronic Fuel Injection and long-track intake system combine to maximize power and fuel efficiency across the line of In-Line Fours.

Better Charging

• With up to 50-amp alternators, our In-Line Fours provide plenty of power for a range of electronics, which comes in handy, now that they're all compatible with digital controls.

Quick Acceleration

• A 10mm Offset Crankshaft allows for larger intake volume design. Four tuned intake tubes boost torque in low and mid-speed ranges for quick acceleration.

Powerful Hole Shot

• The Composite Intake Manifold is a lightweight, compact design, making these engines very versatile. Long Tube Intake Tracks are tuned to increase airflow, boosting low-end and midrange torque. This means a more powerful hole shot and increased acceleration. Even with all this responsive power, an air silencer box and surge tank reduce air intake noise and air turbulence for smoother operation.