Yamaha - Gear - Lower Unit Drivetrain Component - 6L2-45560-10-00

Overview

When gears inside the lower unit start wearing down, you’ll notice it right away—noise, rough engagement, or slipping under load. This is one of those parts that takes constant stress every time you run the motor. I’ve worked on plenty of units where a worn gear was the root of the problem. Replacing it brings things back to smooth, solid operation and helps avoid bigger damage down the line.

Key Features

• Precision-Cut Gear Teeth – Ensures smooth engagement and efficient power transfer.
• High-Strength Construction – Built to handle torque and load without premature wear.
• Factory-Spec Fitment – Designed to match Yamaha lower unit tolerances for proper alignment.
• Restores Drivetrain Performance – Helps eliminate slipping, noise, and rough operation.
• Wear-Resistant Surface – Engineered to withstand continuous contact and high-speed rotation.

Engine & Boat Compatibility

Designed for Yamaha outboard engines with compatible lower unit gear systems. Commonly used across small to mid-range outboards on fishing boats, skiffs, and utility vessels. Always confirm part number compatibility before installation.

FAQ

Q: What are signs that this gear is worn or damaged?
A: Grinding noises, slipping under load, or metal in the gear oil are common signs.

Q: Can this part cause shifting problems?
A: Yes, worn gear teeth can affect how smoothly the unit engages and holds gear.

Q: Is this a simple replacement?
A: It requires opening the lower unit, so it’s usually done during a rebuild or major service.

Q: Should I inspect other parts at the same time?
A: Definitely—bearings, seals, and other gears should be checked while everything is apart.

Q: Can water intrusion damage this gear?
A: Yes, water in the gear case reduces lubrication and can lead to rapid wear.

• Supersessions
  6L2-45560-00-00