Yamaha - Lower Case Packing - Lower Unit Seal Component - 6L2-45315-A0-00

Overview

Seals inside the lower unit don’t get much attention until something starts leaking, but they’re critical to keeping everything protected. When this packing wears out, you can end up with water getting in or gear oil leaking out—both bad news for the gears inside. I’ve seen small seal failures turn into major repairs just from being ignored too long. Replacing it during service keeps the lower unit sealed tight and running the way it should.

Key Features

• Reliable Sealing Function – Helps keep gear oil contained and prevents water intrusion.
• Protects Internal Components – Maintains proper lubrication for gears and bearings.
• Corrosion-Resistant Material – Built to withstand exposure to harsh marine environments.
• Factory-Spec Fitment – Designed to match Yamaha tolerances for proper sealing and installation.
• Ideal for Routine Service – Commonly replaced during lower unit maintenance or rebuilds.

Engine & Boat Compatibility

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

FAQ

Q: What are signs this packing needs replacing?
A: Milky gear oil, visible leaks, or loss of lubrication are common indicators.

Q: Can this cause damage if left unchanged?
A: Yes, water intrusion or oil loss can quickly damage gears and bearings.

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

Q: Is installation difficult?
A: It’s usually straightforward, but surfaces need to be clean and properly seated.

Q: Does saltwater use affect this part?
A: Over time, yes—regular inspection helps catch wear before it becomes an issue.

• Supersessions
  6L2-45315-00-00