Water Shutter Kit – Fits MerCruiser 3.0-4.2L Sterndrive & Inboard (Replaces MerCruiser 807166A3, Sierra 18-2732-9) 150-175HP Most applications use two seals

Most applications use two seals installed back-to-back

Remove the nuts or bolts securing the carburetor to the intake manifold and carefully detach it

Does this kit fit newer Johnson 4-stroke motors

ensuring proper engine firing

Center the hydrofoil on the anti-ventilation plate (the flat plate above the propeller)

Water Shutter Kit – Fits MerCruiser 3.0-4.2L Sterndrive & Inboard (Replaces MerCruiser 807166A3, Sierra 18-2732-9) 150-175HP Most applications use two sealsProduct Details This Water Shutter Kit is an essential exhaust system component designed to prevent water from entering the engine. It is engineered for MerCruiser 3. 0L to 4. 2L inline sterndrive and inboard engines manufactured between approximately 1994 and 1997, including D3. 0L VM 183 I L5, D3. 6L VM 219 I L6, and D4. 2L 220 IDI VM 254 I L6 models. The kit serves as a direct replacement for MerCruiser part 807166A3 and interchanges with Sierra 18