Yamaha - Driven Gear - Engine Power Transfer Component - 6H4-11537-01-00

Overview

When internal gears start wearing out, you’ll usually hear it before anything else—whining, grinding, or just not running as smooth. I’ve opened up motors where a worn driven gear was the root of the problem, especially on engines that have seen a lot of hours. It’s a critical part that keeps everything turning in sync under load. Once it’s replaced and set up right, the engine runs quieter and more consistent again.

Key Features

• Direct Power Transfer – Transfers rotational force between engine components for proper operation.
• Precision Gear Engagement – Designed for smooth meshing to reduce noise and wear.
• Hardened Gear Construction – Built to handle torque and resist long-term wear.
• OEM-Spec Fitment – Manufactured to Yamaha tolerances for correct alignment and function.
• Reliable Internal Operation – Supports consistent performance across varying engine speeds.

Engine & Boat Compatibility

Designed for Yamaha outboards with compatible internal gear and drivetrain assemblies. Commonly used across small to mid-size engines found on fishing boats, skiffs, and recreational vessels. Always verify compatibility with your specific engine before installation.

FAQ

Q: What are signs this gear is worn or failing?
A: Grinding noise, whining under load, or inconsistent performance are common indicators.

Q: Can a worn gear damage other components?
A: Yes, improper gear mesh can lead to additional wear on surrounding parts.

Q: Is this a difficult repair?
A: Internal gear work can be complex and usually requires proper tools and setup.

Q: What causes gear wear over time?
A: Normal use, lack of lubrication, or debris in the system can all contribute.

Q: Should I replace other parts during this repair?
A: It’s recommended to inspect and possibly replace related gears, bearings, and seals while the system is open.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

• Supersessions
  6H4-11537-00-00