Pay in 4 interest-free payments of $6.50 Learn more
Ships within 48 hours · Estimated delivery Aug 4 - Aug 9
Clean both the housing and the cover surfaces thoroughly
Verify your part number before ordering
You may need to remove other components for access
Reconnect the battery and check for leaks and proper operation once the boat is in the water
Post-installation squealing usually indicates incorrect tension
Exhaust Water Shutter Kit – Fits MerCruiser 3.0-4.2L (Replaces Mercury/MerCruiser 807166A3, Sierra 18-2732-9) 4.4HP Clean both the housing andProduct Details This Exhaust Water Shutter Kit is designed for MerCruiser 3. 0L, 3. 6L, and 4. 2L inboard and sterndrive engines from model years 19941997. It functions as a flexible check valve, preventing water from flowing back up the exhaust system and into the engine. This kit is a direct interchange for several part numbers, including Mercury MerCruiser 807166A3, Sierra 18 2732 9, GLM 89170, and Mallory 9 42802. Designed for direct replacement,
