Sterndrive exhaust water shutter 807166A1 acts as a check valve to keep following seas or water from washing back into the exhaust system and into the engine. Designed for select MerCruiser sterndrives, this shutter is essential for preventing corrosion and damage when the engine is not running or at low RPM.
- For select MerCruiser sterndrive and inboard engines
- Acts as a check valve to prevent water backflow into exhaust
- Shutter is 2.48 in. diameter at cross pin (hinge pin)
- Essential for protecting the engine from water damage
- See your manual for specific applications and instructions
