Sierra 118-4221 Thrust Washer for Marine Lower Units

The Sierra 118-4221 is a precision-engineered thrust washer designed for marine outboard and sterndrive lower unit applications. This critical component helps maintain proper shaft alignment and absorbs axial thrust loads in the gearcase assembly, ensuring smooth operation and extended service life of your marine drive system.

Key Features:

• Precision-manufactured to OEM specifications for reliable fit and performance
• Durable construction designed to withstand harsh marine environments
• Essential component for lower unit rebuilds and maintenance
• Helps prevent excessive shaft play and bearing wear
• Quality Sierra replacement part for professional or DIY marine mechanics

Sierra International is a trusted name in marine replacement parts, offering quality components that meet or exceed original equipment standards. This thrust washer is an essential item for proper gearcase assembly and should be replaced during lower unit rebuilds to ensure optimal performance and reliability.