Flappers and Shutters

3" Water Shutter that was used on V-6 & V-8 Mercruiser applications with center riser manifolds from 1982 thru 1987. It's purpose is to keep water...

Pair (2 Flappers) of Exhaust Water Shutter Flapper for 4 Inch Y pipe used on Mercruiser. This includes a pair (2 Flappers). Fits into the "Y" Pipe on...

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...

Flapper for Thru-Hull using a 3 Inch Exhaust Outlet on Inboard Applications. Used on the outside of the boat on the exhaust outlet to prevent the...

Exhaust Flapper with Clamp Fits Inboards with 4" Exhaust Outlet . Used on the outside of the boat on the exhaust outlet to prevent the rush of water...

Water Shutter, Exhaust fits Fits: Mercruiser 4 cyl - V8 SB with a 3 Inch OD. Exhaust Pipe. Replaces: Mercruiser 60930

Exhaust Shutter OEM: MercuryReplaces: Mercury 60930 For 1982-98 most 4-cyl 1983-89. also crosses with:Sierra: 18-2727 Mallory: 9-42800 UPC:...

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...

Water Shutter Exhaust Flapper Kit For V6 Engines 1996-99 For Original One Piece Exhaust Manifold Y-Pipe These are wider and have a flat tip....

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...

Exhaust Flapper with Clamp Fits Inboards with 4" Exhaust Outlet . Used on the outside of the boat on the exhaust outlet to prevent the rush of water...

Exhaust Flapper Valves with Clamps Fits Mercruiser with 5" and 6" Flapper valves

Grommet for Water Shutter (Flapper Valve) on Mercruiser Note: 2 Required Per Flapper

Water Shutter for Exhaust on Mercruiser Inline Engines with a 2.5 Inch OD Exhaust Pipe.

3 Inch Flapper Water Shutter Butterfly Design for various Mercruiser 1973 and newer with a 3 Inch diameter Y pipe. We call this the butterfly design...

Retainer for MER60930 Water Shutter

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...

Water Shutter Kit for Mercruiser V6 with 1 piece Y-Pipe manifolds. Only fits Y pipe used with original 1 piece exhaust manifold. IF you have...

Exhaust Water Shutter Flapper for 4 Inch Y pipe used on Mercruiser. Fits into the "Y" Pipe on most V-6 & V-8 engines to help prevent water from...

3" Water Shutter that was used on V-6 & V-8 Mercruiser applications with center riser manifolds from 1982 thru 1987. It's purpose is to keep water...

Exhaust Water Shutter Flapper for 4 Inch Y pipe used on Mercruiser. Fits into the "Y" Pipe on most V-6 & V-8 engines to help prevent water from...

Water Shutter that was used on V-6 & V-8 Mercruiser applications with center riser manifolds from 1982 thru 1987 with the 3 Inch Diameter Y Pipe....