Yamaha - Lower Unit Assembly - Outboard Drive System - 68S-45300-32-8D

Overview

When your lower unit starts wearing out, you’ll notice it in how the boat handles and how smooth the power feels. This 68S-45300-32-8D assembly is built to bring that smooth, dependable performance back. It transfers power cleanly from the engine to the prop, keeping everything running the way Yamaha intended. For T50 and T60 setups, this is the kind of OEM replacement that keeps you on the water without second guessing your gear.

Key Features

• Genuine Yamaha Assembly – Built to factory specifications for exact fit and dependable operation.
• Smooth Power Transfer – Ensures consistent propulsion from engine to propeller.
• Heavy-Duty Marine Construction – Designed to handle both everyday use and demanding conditions.
• Corrosion-Resistant Design – Helps protect internal components in saltwater environments.
• Superseded Part Support – Replaced by updated part number 68S-45300-34-8D.

Engine & Boat Compatibility

T50 – Model Range
T60 – Model Range

FAQ

Q: What are signs my lower unit needs replacing?
A: Grinding noise, vibration, water in gear oil, or poor shifting are common signs.

Q: Can I rebuild instead of replacing it?
A: You can, but a full assembly is usually faster and more reliable long term.

Q: Is this difficult to install?
A: It’s straightforward for experienced techs, but proper alignment is important.

Q: Will this improve performance?
A: Yes, especially if your current unit is worn—it restores smooth operation.

Q: Is this safe for saltwater use?
A: Yes, just keep up with flushing and routine maintenance.

• Supersessions
  68S-45300-30-4D, 68S-45300-30-8D, 68S-45300-31-4D, 68S-45300-31-8D, 68S-45300-33-8D, 68S-45300-34-8D, 68S-45300-34-8D, 6C6-45300-30-4D