Yamaha - Lower Unit Assembly - Drivetrain - 200 - 225 - 250 - 300 - 60X-45300-10-NA

Overview

When you’re running bigger VZ motors, the lower unit takes a beating—especially if you’re running hard or in rough water. Once you start hearing noise or feeling that rough engagement, it’s usually time to stop patching and replace it. This assembly is built to bring everything back to smooth, solid performance. Install it right, and you’ll feel that clean power transfer the first time you throttle up.

Key Features

• Complete Lower Unit Assembly – Provides a full replacement for worn or damaged drivetrain components.
• Smooth Power Transfer – Delivers consistent propulsion from engine to propeller.
• Corrosion-Resistant Construction – Built to handle saltwater and harsh marine environments.
• Factory-Spec Fitment – Matches Yamaha specifications for proper alignment and installation.
• Heavy-Duty Internal Components – Designed to withstand high horsepower loads and long-term use.

Engine & Boat Compatibility

VZ200RTLR – 2007
VZ225HTLR – 2007-2009
VZ225TLR – 2005-2006
VZ225TLRB – 2003
VZ225TLRC – 2004
VZ225TLRD – 2005
VZ250FTLR – 2007-2009
VZ250TLR – 2005-2006
VZ250TLRB – 2003
VZ250TLRC – 2004
VZ250TLRD – 2005
VZ300BTLR – 2007-2009
VZ300TLR – 2005-2006
VZ300TLRC – 2004
VZ300TLRD – 2005

FAQ

Q: What are signs my lower unit needs replacing?
A: Grinding noise, hard shifting, water in gear oil, or loss of power are the most common signs.

Q: Do I need to add gear oil before using this?
A: Yes, always fill and check gear oil before running the engine.

Q: Is this a direct bolt-on replacement?
A: It’s built to factory specs, but you should confirm shaft length and setup before installing.

Q: Can I reuse my existing propeller with this unit?
A: In most cases yes, as long as it matches the shaft and spline configuration.

Q: How can I extend the life of this lower unit?
A: Regular gear oil changes, checking seals, and avoiding impacts with debris will help it last longer.

• Supersessions
  60X-45300-11-NA, 60X-45300-11-NA