Yamaha - Lower Unit Assembly - Gearcase & Drive System - F115 - 68V-45300-12-8D

Overview

On a Yamaha F115, the lower unit is responsible for delivering power from the engine to the prop with smooth, consistent performance. This assembly is built to restore that reliability, helping your outboard run efficiently whether you're cruising, fishing, or making longer runs. If your current unit is worn, noisy, or not shifting properly, replacing it brings back clean operation and dependable performance on the water. Built to handle marine conditions, it’s designed for long-term durability and steady performance.

Key Features

• Complete Gearcase Assembly – Restores smooth and efficient power transfer.
• Durable Marine Construction – Designed to withstand corrosion and harsh environments.
• Consistent Performance – Supports smooth shifting and reliable operation.
• OEM Yamaha Fitment – Engineered to factory specs for proper alignment and function.

Engine & Boat Compatibility

Compatible with Yamaha F115 outboard models.

FAQ

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

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

Q: Has this part been updated or replaced?
A: Yes, this unit has been superseded by 68V-45300-14-8D.

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

Q: Is installation difficult?
A: It’s typically an advanced repair and may require professional installation.

• Supersessions
  68V-45300-10-8D, 68V-45300-11-8D, 68V-45300-13-8D, 68V-45300-14-8D, 68V-45300-14-8D
• Engine Application
  • F115