Sierra 18-0021 Gear Housing Seal Kit for Yamaha Outboard Motors

The Sierra 18-0021 Gear Housing Seal Kit is assembled in Sierra's Illinois factory and designed specifically for Yamaha outboard motor lower units. This kit replaces Yamaha OEM part number 688-W0001-22-00 and provides all the essential seals needed for gear housing maintenance and repair.

Key Features:

• OEM quality engineering for specific applications with precise fit, form and function
• Complete seal kit for comprehensive gear housing service
• Premium marine-grade materials for harsh saltwater environments
• Manufactured in the USA to strict quality standards
• Backed by Sierra's industry-leading warranty

This gear housing seal kit ensures proper sealing and protection of your Yamaha outboard's lower unit, preventing water intrusion and gear oil leakage. Essential for routine maintenance or rebuilds of the gear case assembly.