Fast, secure attachment Large rectangular rubber sleeve plus a black, coated spring-steel frame creates a tight seal over the outboard water inlet. Quick snap-on connection reduces leaks during flushing and maintenance. Durable, wear-resistant materials ensure repeated use and reliable attachment. Improved engine protection Two large rectangular rubber “ear” covers fully shield the inlet area to minimize water loss while flushing. The design helps maintain proper cooling flow during maintenance and reduces the risk of overheating or cavitation during service. Better corrosion prevention and cleaning Dual water-inlet design increases water flow through both inlets to flush salt, sand, and silt more effectively. Regular flushing with clean water reduces corrosive damage and helps extend the life of the outboard. Simple, tool-free installation Slide the rubber cup over the top edge of the inlet slot. Attach the male plug directly to a standard hose for immediate use. Enables fast, on-deck maintenance without special tools. Materials and compatibility Construction: large rubber sleeve with black, coated spring-steel frame; wear-resistant components for long life. Connection: male plug fits standard garden or washdown hoses. Function: designed for flushing and protecting outboard motor water inlets during maintenance. Practical use scenarios 1. After a saltwater trip: attach the flushing cup and run fresh water through both inlets to remove salt and sand before storage, reducing corrosion risk. 2. Routine maintenance at the dock: secure the sleeve over the inlet and flush the cooling system while servicing spark plugs or lower unit components. 3. Pre-storage flushing: use the dual-inlet flow to clear silt and debris from the cooling passages before long-term storage. Why you need it Reduces leaks during flushing and maintenance, saving time and preventing messy work. Improves water flow through both inlets for more thorough cleaning. Protects the outboard from corrosion and debris, supporting longer engine life with minimal effort.