Sierra 18-9787 Lower Unit Fill Tube Import for Small Gearcases

The Sierra 18-9787 Lower Unit Fill Tube (Import) is a purpose-built flush and fill tool designed for small marine gearcases that use the standard 10 oz. tube-style gear lube package. Whether you're servicing an outboard or stern drive at home or at the dock, this tool simplifies the gear lube change process for the DIY boater.

Key Features:

• Flush and fill tool specifically designed for small gearcases requiring a 10 oz. tube package
• Includes the appropriate lower unit fitting for import engine applications
• Ideal for at-home, do-it-yourself marine maintenance
• Clamshell packaged for convenient retail display and storage
• Compatible with import brand lower units — see fitment guide for specific engine models

The Sierra 18-9787 is the import-specific version of Sierra's lower unit fill tube line, designed to mate with the gear lube fill ports found on import-brand outboard engines. It pairs with Sierra's 10 oz. gear lube tube packages for a complete, mess-free lower unit service. Sierra's lifetime warranty on lower unit fill tubes reflects the brand's commitment to long-lasting marine maintenance tools.