Cobra Marine Exhaust Y-Pipe Water Shutter Flappers – Replaces Mercruiser 807166A1 – Set Of 2

If you own a Mercruiser stern drive, you probably know about these.

They're the exhaust shutter flappers that go inside the Y-pipe to keep water from surging back up into your engine.

This is a set of two, brand new from Cobra Marine, and they directly replace the Mercruiser part number 807166A1.

Over time, these rubber flappers can deteriorate or break off, and if they do, you risk engine damage.

So, it's a good idea to replace them if they're looking rough.

They come with a 1-year warranty.

Simple, affordable insurance for your boat's engine.

Made by Cobra Marine.