Yamaha - Lower Case Packing - Lower Unit Sealing - 6E0-45315-A0-00

Overview

Anytime you’re working on a lower unit, sealing it back up properly is everything. This packing sits right where the lower case needs to stay watertight, and if it’s worn or reused, you’re asking for trouble. I’ve seen clean gear oil turn milky fast just from a bad seal in this area. Replacing it is a simple step that helps protect everything inside the lower unit from water intrusion.

Key Features

• Watertight Seal Performance – Helps keep water out of the lower unit to protect internal components.
• Compression-Ready Material – Designed to seal properly under torque without breaking down.
• Maintains Gearcase Integrity – Supports proper lubrication by preventing contamination.
• OEM Fitment Design – Matches original specifications for correct placement and reliable sealing.

Engine & Boat Compatibility

Designed for Yamaha 2-stroke outboard engines with standard lower unit gearcases. Commonly used on smaller horsepower motors found on skiffs, jon boats, and general-purpose fishing boats.

FAQ

Q: What happens if this packing fails?
A: Water can enter the lower unit, leading to contaminated gear oil and potential internal damage.

Q: Can I reuse the old packing during service?
A: It’s not recommended—once compressed, it usually won’t seal properly again.

Q: How do I know if water is getting into my lower unit?
A: Milky or cloudy gear oil is a clear sign of water intrusion.

Q: Is installation difficult?
A: It’s straightforward, but surfaces need to be clean and properly aligned for a good seal.

Q: Should I replace this during lower unit repairs?
A: Yes, it’s standard practice anytime the lower case is opened up.

• Supersessions
  6E0-45315-00-00