CDI Electronics 18-99536 Lower Unit Fill Tube Adapter for Mercury

The CDI Electronics 18-99536 is a lower unit fill tube adapter specifically designed for Mercury and Mercruiser marine outboard and sterndrive applications. This essential service tool provides a secure, leak-free connection when filling or draining lower unit gearcase lubricant.

Key Features:

• Designed specifically for Mercury and Mercruiser lower unit drain/fill ports
• Enables proper gearcase oil filling and drainage during maintenance
• Durable construction for repeated professional or DIY use
• Works with standard gearcase filler pumps and bottles
• Essential tool for lower unit service and maintenance

This adapter is a must-have tool for anyone performing routine lower unit maintenance on Mercury or Mercruiser outboards and sterndrives. Proper lower unit lubrication is critical for protecting gears and extending the life of your marine drive system.