basic power industries
177 Fulford Dr.
Harkers Island, NC 28531
(252) 504-3355

Flappers and Shutters


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MER45586


Exhaust Shutters, Mercruiser Inline 4, 6 and 3.7L

Exhaust Shutters, Mercruiser Inline 4, 6 and 3.7L

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

$34.95




GLM89250


Flapper Exhaust Protector for 4 Inch Thru Hull Outlet

Flapper Exhaust Protector for 4 Inch Thru Hull Outlet

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 up the exhaust should you run aground suddenly.

$23.95




GLM89260


Flapper Exhaust Protector for 5 and 6 Inch Thru Hull Outlet

Flapper Exhaust Protector for 5 and 6 Inch Thru Hull Outlet

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

$36.95





MER25-43809


Grommet-Exhaust Flapper Pin, Mercruiser

Grommet-Exhaust Flapper Pin, Mercruiser

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

$1.95




MER60931


Retainer, Water Shutter, Mercruiser

Retainer, Water Shutter, Mercruiser

Retainer for MER60930 Water Shutter

$12.95




MER60930


Shutter Exhaust Flapper 3 Inch Butterfly Design for Mercruiser 73-up 60930

Shutter Exhaust Flapper 3 Inch Butterfly Design for Mercruiser 73-up 60930

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 because it flaps on each side of the center rather...

$31.95





BPI89160


Shutter Flapper Exhaust Y Pipe 3 Inch for Mercruiser 99370A2

Shutter Flapper Exhaust Y Pipe 3 Inch for Mercruiser 99370A2

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 from backing into the Riser & Manifold.

$18.95




MAL9-42801


Shutter Flapper Exhaust Y Pipe 3 Inch for Mercruiser 99370A2

Shutter Flapper Exhaust Y Pipe 3 Inch for Mercruiser 99370A2

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 from backing into the Riser & Manifold. Where...

$16.95




MER99370A2


Shutter Flapper Exhaust Y Pipe 3 Inch for Mercruiser 99370A2

Shutter Flapper Exhaust Y Pipe 3 Inch for Mercruiser 99370A2

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 from backing into the Riser & Manifold.

$28.95





SIE18-2733


Shutter Flapper Exhaust Y Pipe 3 Inch for Mercruiser 99370A2

Shutter Flapper Exhaust Y Pipe 3 Inch for Mercruiser 99370A2

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. It's purpose is to keep water from backing into the...

$19.95




GLM89175


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

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

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...

$43.95




MER807166A1


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

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

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...

$69.95





MER807166A2


Shutter Water Exhaust Flapper Y Pipe Mercruiser V6 1 Piece Manifold

Shutter Water Exhaust Flapper Y Pipe Mercruiser V6 1 Piece Manifold

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 converted to the two piece manifold and your application...

$64.95




MER807166A3


Shutter Water Flapper Exhaust Y Pipe for Mercruiser 807166A3

Shutter Water Flapper Exhaust Y Pipe for Mercruiser 807166A3

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 backing into the manifold and engine swivel design and...

$74.95




SIE18-2732


Shutter Water Flapper Exhaust Y Pipe for Mercruiser 807166A3

Shutter Water Flapper Exhaust Y Pipe for Mercruiser 807166A3

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 backing into the manifold and engine swivel design and...

$49.95





BPI9-42800


Water Shutter, Mercruiser 4 Cylinder-Small Block V8

Water Shutter, Mercruiser 4 Cylinder-Small Block V8

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

$19.95







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Basic Power Industries, Inc.• 177 Fulford Dr, Harkers Island, NC 28531-9520, US • +1-252-504-3355