Gaskets Mount Kits etc.

Grommet - Exhaust Flapper Pin, Mercruiser

MER25-43809


Grommet - Exhaust Flapper Pin, Mercruiser

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

$1.95
Gasket Elbow Riser Mercruiser Dry Joint Fresh Water Cooled

MER27-864549A02


Gasket Elbow Riser Mercruiser Dry Joint Fresh Water Cooled

Riser Elbow gasket Mercruiser Dry Joint Exhaust with closed cooling - block off gasket It fits GM V6 and V8 engines with Dry Joint Exhaust Manifold...

$39.95
... more info
Replacement Available
Gasket, Elbow Riser, Mercruiser, Dry Joint Raw Water Cooled 02-up

MER27-864850A02


Gasket, Elbow Riser, Mercruiser, Dry Joint Raw Water Cooled 02-up

Riser Elbow gasket Mercruiser Dry Joint Exhaust with standard cooling - restrictor gasket It fits GM V6 and V8 engines with Dry-Joint Exhaust...

$35.95
... more info
Replacement Available
Exhaust Shutters, Mercruiser Inline 4, 6 and 3.7L

MER45586


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.

$41.95
Shutter Exhaust Flapper 3 Inch Butterfly Design for Mercruiser 73-up 60930

MER60930


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...

$31.95
... more info
Replacement Available
Retainer, Water Shutter, Mercruiser

MER60931


Retainer, Water Shutter, Mercruiser

Retainer for MER60930 Water Shutter

$18.95
Shutter Water Exhaust Flapper for Mercruiser 4 Inch Y Pipe V6 V8 807166A1

MER807166A1


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...

$69.95
... more info
Replacement Available
Shutter Water Exhaust Flapper Y Pipe Mercruiser V6 for 1 Piece Manifold System

MER807166A2


Shutter Water Exhaust Flapper Y Pipe Mercruiser V6 for 1 Piece Manifold System

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...

$64.95
Shutter Water Flapper Exhaust Y Pipe for Mercruiser OEM 807166A3

MER807166A3


Shutter Water Flapper Exhaust Y Pipe for Mercruiser OEM 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...

$74.95
... more info
Replacement Available
Kit Manifold Conversion for 1-piece 4.3L V6 Mercruiser to 2-piece 864293A02

MER864293A02


Kit Manifold Conversion for 1-piece 4.3L V6 Mercruiser to 2-piece 864293A02

Kit to convert older style 1-piece Riser/Manifold to newer style 2-piece center rise manifolds and risers. Converts 1 engine. Conversion Kit...

$229.95
... more info
 Limited Availability - Please Call 
Shutter Flapper Exhaust Y Pipe 3 Inch for A Mercruiser 99370A2

MER99370A2


Shutter Flapper Exhaust Y Pipe 3 Inch for A 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...

$28.95
Gasket Riser for Mercruiser 3.7L 224 cid with Cast Iron Manifold 27-856705

OSC0879-G


Gasket Riser for Mercruiser 3.7L 224 cid with Cast Iron Manifold 27-856705

Exhaust Riser Gasket for a 3.7L Mercruiser. It fits Osco # 0879 riser 3.7L with cast iron manifold Replaces: Mercury Marine Quicksilver original...

$8.00
Riser Mounting Kit for Mercruiser 90880A 2 Cast Iron Manifolds

OSC0879-MK


Riser Mounting Kit for Mercruiser 90880A 2 Cast Iron Manifolds

Riser Mounting Kit fits Mercruiser # 90880A 2; Barr # MC-20-90880; Osco # 0879; GLM # 51170; Mallory # 9-40550 risers. Replaces: Sierra # 18-8500;...

$10.95
Spacer Mounting Kit for Mercruiser OSC1851

OSC1851MK


Spacer Mounting Kit for Mercruiser OSC1851

Spacer mounting kit fits Osco # 1851 Spacer

$39.95
Riser Mounting Kit for Mercruiser OSC2076 Riser

OSC2076MK


Riser Mounting Kit for Mercruiser OSC2076 Riser

Mounting Kit for Osco # 2076 Riser Replaces: Sierra # 18-8551; Mallory # 9-40585 Osco Manifolds and Risers come with a 3-year limited warranty (PDF)!

$6.95
Riser Mounting Kit for Mercruiser

OSC3320-MK


Riser Mounting Kit for Mercruiser

Mounting Kit For 3" Spacer with 3" Riser on Mercruiser Replaces: Barr # MC-20-93320A3P; GLM # 53331; Sierra # 18-8554; Mallory # 9-40582

$22.95
Riser Mounting Kit for Mercruiser using 3 Inch Spacer Block and 4 Inch Riser

OSC3320-MK-X


Riser Mounting Kit for Mercruiser using 3 Inch Spacer Block and 4 Inch Riser

Mounting Kit For 3" Spacer with 4" Riser on Mercruiser Replaces: Barr # MC-20-93320A3P; GLM # 53430; Sierra # 18-8555; Mallory # 9-40583

$22.95
Riser Mounting Kit, 6" for Mercruiser

OSC3322MK


Riser Mounting Kit, 6" for Mercruiser

Mounting Kit for 6" Spacer with 4" Riser on Mercruiser Replaces: Barr # MC-20-93322A3P; GLM # 53361; Sierra # 18-8556; Mallory # 9-40584

$7.95
Riser Mounting Kit for Mercruiser OSC4354 Riser

OSC4354-MK


Riser Mounting Kit for Mercruiser OSC4354 Riser

Mounting Kit fits Osco # 4354 risers on Mercruiser Replaces: Barr # MC-20-44354P; GLM # 53400; Sierra # 18-8505; Mallory # 9-40578

$17.95
End Cap Gasket for Mercruiser

OSC48043


End Cap Gasket for Mercruiser

End Plate Gasket fits Osco # 60252 & Osco # 54870 end caps

$4.00
Riser Gasket for Mercruiser

OSC5538-G


Riser Gasket for Mercruiser

Riser Gasket fits Osco # 5538 risers on Mercruiser Replaces: Mercury Quicksilver # 27-39915; Barr # MC47-27-39915; Sierra # 18-2819; Mallory # 9-61423

$5.00
Exhaust Mounting Kit for Mercruiser

OSC5538-MK


Exhaust Mounting Kit for Mercruiser

Mounting Kit fits Osco # 5538 risers Replaces Barr # MC-20-55538P; Sierra # 18-8508; Mallory # 9-40571

$7.95
Manifold Mounting Kit for Mercruiser

OSC560-MK


Manifold Mounting Kit for Mercruiser

Mounting Kit fits Osco # 5603, Osco # 5604 manifolds Replaces: Sierra # 18-8509; Mallory # 9-40572

$12.95
Manifold Plate, Stainless Steel, for Mercruiser

OSC60207


Manifold Plate, Stainless Steel, for Mercruiser

Stainless Steel Plate with a weep hole used on log style Mercruiser manifolds prior to 1983. The Plate is sandwiched between 2 Osco # 6351-G gaskets...

$10.95
Manifold End Plate Mounting Kit for Mercruiser

OSC60252-MK


Manifold End Plate Mounting Kit for Mercruiser

End Plate Mounting Kit for a Mercruiser. This is for the End Plates on the Ford and GM log style Manifolds prior to 1983. The kit contains the Gasket...

$7.95
Riser Mounting Kit for Mercruiser OSC6325 Riser

OSC6325-MK


Riser Mounting Kit for Mercruiser OSC6325 Riser

Mounting Kit fits Osco # 6325 risers Replaces: Barr # MC-20-60426P; Sierra # 18-8552; Mallory # 9-40586

$7.95
Riser Gasket for Mercruiser OSC6351 Riser

OSC6351-G


Riser Gasket for Mercruiser OSC6351 Riser

Riser Gasket for a Mercruiser application. It is used with riser Osco # 6351 and riser Osco # 6771. (same as GLM31520)

$6.95
Riser Mounting Kit for Mercruiser OSC6351 Riser

OSC6371-MK


Riser Mounting Kit for Mercruiser OSC6351 Riser

Riser Mounting Kit for Mercruiser V8s with log style manifolds, and some inline 6 cylinder, all prior to 1982. It is for riser Osco # 6351 and Osco #...

$7.95
Mounting Kit, for Risers: OSC6351, OSC6771

OSC6371-MK-SP


Mounting Kit, for Risers: OSC6351, OSC6771

Riser Mounting Kit fits Osco # 6351, GLM # 51120, and Osco # 6771 Risers. Includes Osco # 60207 stainless plate with weep hole, (2) Osco # 6351-G...

$16.95
Manifold Mounting Kit for Mercruiser OSC7114B, OSC7214, OSC7234B, OSC7235B Manifolds

OSC7214-MK


Manifold Mounting Kit for Mercruiser OSC7114B, OSC7214, OSC7234B, OSC7235B Manifolds

Mounting Kit For a Mercruiser Center Riser Manifold. It fits a small block GM from 1983 & up using Osco # 7114B, Osco # 7234B, Osco # 7235B...

$12.95
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