Sierra 18-1363 Marine Lower Unit Thrust Bearing

The Sierra 18-1363 is a precision-engineered thrust bearing designed for marine lower unit applications. This critical component manages axial loads and maintains proper propeller shaft alignment in outboard and sterndrive lower units.

Key Features:

• Manufactured to OEM specifications for reliable performance
• Precision-ground surfaces for smooth operation and extended service life
• High-quality materials resistant to marine environment corrosion
• Direct replacement thrust bearing for easier maintenance and repair
• Designed to withstand high thrust loads from propeller operation

Sierra marine parts are engineered to meet or exceed original equipment standards, making this thrust bearing an excellent choice for lower unit rebuilds and routine maintenance. Proper installation ensures optimal gear case performance and longevity.