This product has been superseded by: 65N-45300-01-NA

Yamaha - Lower Unit Assembly 150 HP - Drivetrain Component - 65N-45300-00-NA

Overview

When a lower unit starts showing wear or takes a hit, you feel it right away in how the boat handles. This Yamaha lower unit assembly is built to bring that smooth, steady power transfer back to your 150 horsepower outboard. It’s designed to bolt up clean and run true, whether you’re cruising offshore or working the shoreline. Solid construction and proper alignment make a noticeable difference the moment you get back on the throttle.

Key Features

• Smooth Power Delivery – Transfers engine power cleanly to the propeller for consistent performance.

• OEM Precision Fit – Lines up exactly with Yamaha 150 horsepower outboards for straightforward installation.

• Corrosion-Resistant Build – Holds up well in both freshwater and saltwater environments.

• Heavy-Duty Internal Design – Built to handle long runs, load, and everyday marine use.

Engine & Boat Compatibility

Compatible with Yamaha outboards designed for 150 horsepower applications that utilize this lower unit assembly for drivetrain performance and power transfer.

FAQ

Q: What are signs a lower unit is going bad?
A: You might notice grinding noises, trouble shifting, vibration, or milky gear oil from water intrusion.

Q: Do I need to break in a new lower unit?
A: It’s a good idea to run it moderately at first and check fluid after initial use to make sure everything is seated properly.

Q: Is this suitable for saltwater use?
A: Yes, but regular flushing and gear oil checks are key to keeping it in good shape long term.

Q: Can I install this myself or should I use a shop?
A: If you’re comfortable with outboard rigging and alignment, it’s doable, but many prefer a shop for proper setup and sealing.

• Supersessions
  65N-45300-01-NA, 65N-45300-02-NA, 65N-45300-02-NA