This product has been superseded by: 64M-45300-03-NA

Yamaha - Lower Unit Assembly 150-200 HP - Drivetrain Component - 64M-45300-02-NA

Overview

When a lower unit starts acting up on these mid-range Yamahas, you’ll notice it right away—rough shifting, noise, or just not running clean. This assembly is built to bring everything back to smooth, reliable operation with proper gear engagement and steady power to the prop. It’s the kind of replacement you go with when you want to eliminate guesswork and get back on the water with confidence. Once it’s installed, the difference in handling and response is hard to miss.

Key Features

• Smooth Power Transfer – Delivers consistent propulsion from engine to propeller.

• OEM Yamaha Fitment – Designed to factory specifications for proper alignment and installation.

• Heavy-Duty Gearcase Design – Built to handle demanding use and mid-to-high horsepower loads.

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

Engine & Boat Compatibility

• Compatible with Yamaha 150-200 HP outboards

FAQ

Q: How do I confirm this fits my exact engine?
A: Match your model number or serial number before ordering, since variations exist between years and trims.

Q: What are signs the lower unit needs replacement?
A: Grinding noises, slipping gears, or water contamination in gear oil are common signs.

Q: Can I install this myself?
A: If you’re experienced with outboard work, yes—but proper alignment and sealing are critical.

Q: Is this suitable for saltwater use?
A: Yes, just keep up with flushing and gear oil maintenance to extend its lifespan.

• Supersessions
  64M-45300-00-NA, 64M-45300-01-NA, 64M-45300-03-NA, 64M-45300-04-NA, 64M-45300-04-NA