Yamaha Pinion – 6BX-45551-00-00

Genuine Yamaha Pinion Gear for Smooth, Reliable Gearcase Operation

The Yamaha - Pinion - 6BX-45551-00-00 is a factory-original pinion gear designed to deliver smooth, precise power transfer within your Yamaha outboard’s lower unit. As a critical gear in the drivetrain, this pinion ensures optimal engagement with the forward and reverse gears, helping maintain efficient propulsion and reliable performance.

Constructed to exacting Yamaha specifications, this gear guarantees a precise fit and enduring durability, even under demanding marine conditions.

Key Features

OEM Yamaha Quality

Manufactured to Yamaha’s strict standards for maximum reliability and seamless integration.

Precision-Machined for Gear Efficiency

Provides consistent meshing with matching gears for smooth and quiet gearcase performance.

Built for Harsh Marine Environments

Crafted from high-strength metal and treated for corrosion resistance.

Compatibility

Part Number: 6BX-45551-00-00

Designed specifically for use in compatible Yamaha outboard lower units.

Refer to your engine’s service manual or parts diagram to confirm fitment.

Ideal Use Cases

Gearcase Rebuilds or Repairs

Essential when replacing worn or damaged gearset components in the lower unit.

Restoring Performance

Helps restore clean gear shifts and eliminate grinding, slipping, or unusual noises.

Preventative Maintenance

Replacing this pinion as part of routine lower unit service can extend the lifespan of the entire drivetrain.

Why Gear Integrity Matters

The pinion gear is responsible for initiating the gear sequence that transfers engine power to the propeller. A worn or damaged pinion can lead to slipping, harsh gear shifts, and internal damage to your outboard’s lower unit. Using a Yamaha - Pinion - 6BX-45551-00-00 ensures your gearcase operates smoothly and efficiently—exactly as Yamaha intended.

Frequently Asked Questions

How do I know if this pinion gear fits my outboard model?

Cross-reference your Yamaha outboard’s model number with the part number in the official Yamaha parts diagram or consult your technician.

What are signs that my pinion gear needs replacement?

Common symptoms include noisy shifting, metal shavings in lower unit oil, slipping gears, or difficulty engaging forward/reverse.

Can I install this pinion gear myself?

While mechanically inclined users can attempt installation, we recommend professional service due to the precision required for gear alignment and torque.