Sierra 18-2052 Outer Propeller Shaft Oil Seal for Mercury Marine Outboards

The Sierra 18-2052 is a precision-engineered outer propeller shaft oil seal designed as a direct replacement for Mercury Marine and Chrysler/Force outboard motors. This critical seal prevents water intrusion and oil leakage in the lower unit, ensuring reliable performance and protecting internal components from damage.

Key Specifications:

• Inside Diameter (Shaft Size): 0.875" (22.2mm)
• Outside Diameter: 1.314" (33.4mm)
• Width: 0.322" (8.2mm)
• Replaces Mercury Marine OEM part number 26-69189

Features and Benefits:

• Manufactured to meet or exceed OEM specifications for reliable fit and function
• Designed with line cutting edge for improved sealing performance
• Compatible with Mercury, Mariner, Chrysler, and Force outboard engines ranging from 25-75 HP
• Backed by Sierra's manufacturer warranty for quality assurance

This seal is a critical maintenance component for proper lower unit operation. Sierra Marine engine parts are manufactured by SeaStar Solutions, a trusted name in marine replacement parts with extensive cross-compatibility across multiple engine brands and models.