
Sierra 18-0578 Marine Timing Cover Oil Seal for Mercruiser
Stern Drive Features:
- Durable construction
- Non-corrosive
- Hard-wearing oil seal
Sierra 18-0578 Marine Timing Cover Oil Seal for Mercruiser
Stern Drive Specifications:
- Outer Diameter: 3.100″
- Shaft Size: 1.800″
- Width: 0.500″
- Replaces: Mercury Marine 26-67388












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