Keep your Mercury 25/30 HP EFI FourStroke engine performing at its peak with this comprehensive 100 Hour Maintenance Kit. Specifically designed for Mercury FourStroke engines with serial numbers #1R154758 and above, this kit contains all essential components for thorough maintenance. The package includes a high-quality oil filter, water separating fuel filter, oil drain seal, and three gearcase drain seals. Regular maintenance using these genuine parts helps ensure smooth operation and reliable performance of your marine engine. This complete kit streamlines your maintenance process by providing all necessary replacement parts in one convenient package. Perfect for boat owners who want to maintain their engine's optimal performance and extend its lifespan through proper care.