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Mercury 45 Hp Base Gasket
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Sierra

Exhaust Manifold Gaskets


Exhaust manifold gaskets are constructed from proven, hi-temperature composites, capable of reaching over 500 degrees Fahrenheit. The gaskets do not include harmful asbestos materials, which give off harmful fumes when heated. Gaskets are capable of withstanding higher heat and exhaust pressures, which are commonly found in the marine environment.

 

In past years, gasket manufacturers have relayed on asbestos to be the primary fiber material found in gaskets due to its ability to handle heat over long periods of time. Today, Sierra utilizes armid fibers, in addition to their composite blend of material, creating a gasket that meets or exceeds the demands of the seals recommend by the engine manufacturer.

 

Each exhaust manifold gasket ensures factory matched footprint of exhaust ports, allowing exhaust to flow freely through the manifold, avoiding damage from blocked ports. The typical thickness of each gasket is 1/16".

 

The exhaust manifold gasket comes as a complete set with precise CAD cut gasket to eliminate hand cutting or trimming for proper alignment. It is recommended during installation to clean both surfaces to the bare metal and apply a thin layer of high-temperature silicone sealer on the surface side to ensure the ultimate seal.

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Sierra Exhuast gaskets
by Wayne from Aberdeen, South Dakota on April 30, 2012
Work just fine.
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