Sierra 18-0526 Oil Seal for Mercury Mariner Outboard Engines

The Sierra 18-0526 is a precision-engineered oil seal designed for Mercury and Mariner outboard engines. This aftermarket replacement seal is manufactured to meet or exceed OEM specifications, providing reliable protection for shafts and bearings in marine applications.

Key Specifications:

• Shaft Size: 0.750 inches
• Outer Diameter: 1.379 inches
• Width: 0.256 inches
• Replaces Mercury OEM part number 26-48443

Features and Benefits:

• Durable construction with metal outer ring and flexible sealing lip
• Prevents oil and grease leakage from critical engine components
• Protects shafts and bearings from water, dirt, and debris intrusion
• Designed to withstand harsh marine environments
• Direct OEM replacement for easy installation

Sierra Marine parts are engineered to deliver dependable performance and long service life in demanding marine conditions. This oil seal provides essential protection to keep your outboard engine running smoothly.