This product has been superseded by: 67C-45300-14-8D

Yamaha - Lower Unit Assembly - Complete Drive System - 67C-45300-12-8D

Overview

The lower unit assembly is a critical component of your Yamaha outboard, designed to transfer engine power to the propeller while supporting smooth gear engagement and reliable propulsion. It houses essential drivetrain components such as gears, shafts, and bearings, ensuring efficient operation and precise control on the water. Built to OEM specifications, this assembly delivers durability, corrosion resistance, and long-lasting performance in harsh marine environments.

Key Features

• Complete Drive System – Transfers engine power to the propeller for efficient propulsion.
• Smooth Gear Operation – Supports consistent shifting and dependable performance.
• OEM Yamaha Construction – Engineered to factory standards for precise fit and reliability.
• Corrosion-Resistant Design – Built to withstand saltwater exposure and demanding marine conditions.

Engine & Boat Compatibility

• Compatible with Yamaha outboards that utilize this lower unit assembly for drivetrain and propulsion functions.

FAQ

Q: What does a lower unit assembly do?
A: It transfers engine power to the propeller and houses the gears that control movement and direction.

Q: Why is this component important?
A: It is essential for propulsion, gear shifting, and overall boat performance.

Q: What are signs of a failing lower unit?
A: Grinding noise, difficulty shifting, or reduced performance can indicate issues.

Q: Is installation difficult?
A: It typically requires proper alignment and mechanical knowledge but is designed for direct fit replacement.

Q: Is this an OEM Yamaha part?
A: Yes, it is manufactured to Yamaha’s original equipment standards.

• Supersessions
  67C-45300-10-4D, 67C-45300-11-4D, 67C-45300-12-4D, 67C-45300-13-8D, 67C-45300-14-8D, 67C-45300-14-8D