To help you find what you are looking for we have a search / Find it Box--Read below to find out how to use the Find It Box...

Search for your needs with plain text, OEM part numbers, DESCRIPTION, or our part number, like(mercruiser manifold), (Suzuki trim motor), (velvet drive kit), etc. If you have difficulty in finding your need, please call us and a tech will assist you. Alternatively, click on a category picture below and drill down. For VELVET DRIVE parts, enter VD in search box

177 Fulford Dr.
Harkers Island, NC 28531
(252) 504-3355
Check Your Order Status
(Tracking Information)

Shopping Cart  [more]

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


  • Part #: GLM89175

Add to Cart:

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

Copyright © 2021 Basic Power Industries.