Sierra 118-0525 Oil Seal for Mercury Mercruiser Marine Engines

The Sierra 118-0525 is a precision-engineered oil seal designed specifically for Mercury and Mercruiser marine engines. This critical component features a durable construction with an outer circular metal portion and an interior flexible sealing member that work together to protect engine shafts and bearings from contamination while preventing lubricant leakage.

Key Specifications:

• Outer Diameter (O.D.): 0.628 inches
• Shaft Size: 0.390 inches
• Width: 0.124 inches
• Manufactured to meet or exceed OEM specifications

OEM Cross-References:

• Mercruiser Stern Drive: 26-41374, 26-45587
• GLM: 85380

Sierra marine engine parts are built with high-quality materials designed to withstand harsh marine environments and provide reliable, long-lasting performance. This oil seal acts as a physical barrier that keeps dirt, water, and foreign debris out while retaining essential lubricating oil where it belongs, ensuring optimal engine protection and performance.