Yamaha - Lower Unit Assembly - Gearcase & Drive System - F115 - 68V-45300-34-8D

Overview

On early Yamaha F115 models, the lower unit is what keeps your power consistent and your ride smooth. This assembly is designed to restore proper power transfer from the engine to the prop, helping your outboard perform reliably on the water. If your current unit is worn, noisy, or not shifting cleanly, replacing it brings back that steady, dependable operation you expect whether you're cruising or fishing.

Key Features

• Complete Gearcase Assembly – Restores smooth power transfer and lower unit performance.
• Durable Marine Construction – Built to handle corrosion, wear, and marine conditions.
• Smooth Shifting Performance – Helps maintain consistent gear engagement and operation.
• OEM Yamaha Fitment – Engineered to factory specs for proper alignment and reliability.

Engine & Boat Compatibility

• F115TXRA - 2002

FAQ

Q: What are signs the lower unit needs replacement?
A: Grinding noise, vibration, shifting issues, or water in the gear oil.

Q: Is this a complete lower unit assembly?
A: Yes, it’s a full gearcase assembly designed for direct replacement.

Q: Will this improve performance?
A: If your existing unit is worn or damaged, it will restore smooth operation and efficiency.

Q: Is installation difficult?
A: It’s a more advanced repair and typically handled by experienced technicians.

Q: Is this a genuine Yamaha part?
A: Yes, it’s built to Yamaha specifications for proper fit and long-term reliability.

• Engine Application
  • F115TXRA - 2002