MerCruiser Water Shutter 60930, also known as a water flapper, acts as a flexible check valve for your exhaust system. It allows exhaust to exit freely while the engine is running but closes when the engine is off to prevent water from back-flowing and causing catastrophic engine damage or corrosion.
- Acts as a flexible check valve to stop water return
- Fits numerous MerCruiser sterndrive exhaust systems
- Installed downstream of the flexible union between elbow and Y-pipe
- Crucial for preventing water-related engine damage
- See your manual for specific application instructions
