OEM Mercury / Quicksilver Water Shutter Assembly 99370A2

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OEM Mercury/Quicksilver water shutter assembly for MerCruiser sterndrive exhaust systems. Controls internal exhaust water flow Includes stainless steel plate and spring-mounted piv ot Helps prevent water intrusion into engine cylinders during shutdown Fits select MerCruiser Alpha and Bravo engines, including many 4.3L to 7.4L models Direct replacement for original 99370A2 exhaust shutter May fit a variety of MerCruiser V6 and V8 applications. Confirm fitment using your engine serial number. Show more