Yamaha - Lower Case Packing - Lower Unit Seal Component - 6L5-45315-A0-00

Overview

This is one of those small sealing parts that does a big job inside the lower unit. When packing starts to wear out, you’ll usually see it in the form of gear oil leaks or water getting where it shouldn’t be. It’s not something you want to ignore, because once contamination starts, it can lead to bigger issues fast. Replacing it during service keeps everything sealed up tight and running the way it should.

Key Features

• Reliable Sealing Function – Helps maintain proper sealing between lower unit components to prevent leaks.
• Protects Internal Components – Keeps water out and gear oil in for consistent lubrication.
• Corrosion-Resistant Material – Designed to hold up in harsh marine environments.
• Factory-Spec Fitment – Matches Yamaha tolerances for proper sealing and installation.
• Essential Service Component – Ideal for lower unit rebuilds or routine maintenance.

Engine & Boat Compatibility

Designed for Yamaha outboard engines with compatible lower unit assemblies. Commonly used across a range of small to mid-size outboards on fishing boats, skiffs, and utility vessels. Always confirm part number compatibility before installation.

FAQ

Q: What happens if this packing fails?
A: You can get gear oil leaks or water intrusion, which can damage internal gears if not addressed.

Q: How do I know it needs replacing?
A: Signs include milky gear oil, visible leaks, or loss of lubrication inside the lower unit.

Q: Should I replace this during a lower unit service?
A: Yes, it’s a good idea anytime the lower unit is opened up or serviced.

Q: Is installation complicated?
A: Not usually, but proper seating and clean surfaces are important for a good seal.

Q: Can saltwater use affect this part?
A: Over time, yes—regular maintenance helps catch wear before it becomes a problem.

• Supersessions
  6L5-45315-00-00