Yamaha Pinion – 6T5-45551-00-00

OEM Yamaha Pinion Gear for Smooth, Precise Gearcase Function

The Yamaha - Pinion - 6T5-45551-00-00 is a genuine factory-engineered gear designed to deliver accurate and consistent power transfer within your Yamaha outboard’s lower unit. As a foundational part of the gearcase assembly, this pinion engages directly with the forward and reverse gears, ensuring responsive acceleration and clean shifting under load.

Manufactured to Yamaha’s exact specifications, this pinion is made from high-strength materials for long-term reliability in challenging marine environments.

Key Features

Authentic Yamaha Component

Engineered to match Yamaha’s performance standards and ensure seamless part replacement.

Precision Fitment

Machined for tight tolerances, promoting smooth gear engagement and reduced vibration.

Durable Marine Construction

Built to withstand saltwater corrosion, impact, and thermal cycling.

Compatibility

Part Number: 6T5-45551-00-00

Designed for select Yamaha outboard motor lower units.

Always verify fitment using your outboard’s model number and official Yamaha parts diagram.

Ideal Use Cases

Lower Unit Repairs

Perfect for restoring gear performance after wear, misalignment, or damage.

Preventative Gearcase Maintenance

Helps maintain optimal drivetrain efficiency and prevents downstream damage.

Professional and DIY Applications

Suitable for both certified marine technicians and experienced boat owners performing rebuilds.

Why a Quality Pinion Matters

The pinion gear initiates power transfer from the driveshaft to the propeller’s gear system. If worn or damaged, it can cause gear slippage, chattering, or even catastrophic failure of the lower unit. The Yamaha - Pinion - 6T5-45551-00-00 offers OEM assurance of durability, fit, and long-term performance—backed by Yamaha’s engineering.

Frequently Asked Questions

How do I confirm this pinion fits my Yamaha outboard?

Reference your model’s parts diagram or consult a Yamaha-certified service tech to ensure compatibility with part number 6T5-45551-00-00.

What are common signs of a worn pinion gear?

Indicators include unusual gear noise, choppy shifting, or metallic particles in the lower unit oil.

Is professional installation required?

While experienced DIYers can install it, correct torque and gear alignment are critical—professional service is recommended for best results.