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Shutter Water Exhaust Flapper for Mercruiser 4 Inch Y Pipe V6 V8 807166A1


  • Part #: GLM89175

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4 Inch Water Shutter that fits many Mercruiser applications.
It is 2-1/2" wide and 6-1/8" long
This valve has a butterfly action and comes with 2 grommets. Sold as Each.
If your flapper currently has square grommets that hold it in, and a 4 inch Y-Pipe, then this is the correct flapper (except 4.3L with 1-Piece Manifold System)
If your current flapper is held in with round grommets, then you need BPI89170 or MAL9-42802

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