Q:

What is a plenum gasket?

A:

Quick Answer

The plenum gasket is a paper or rubber that creates a seal between the upper intake manifold and lower intake manifold. The plenum gasket is also known as the intake manifold gasket or caterpillar gasket.

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What is a plenum gasket?
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Full Answer

When pulling out the intake manifold, this gasket is almost always damaged. It is externally fragile and practically impossible to reuse without creating a vacuum leak. Since removing the intake manifold is expensive and time-consuming, it is highly recommended that the plenum gasket be replaced every time the intake manifold is removed. The intake manifold is a part of the engine that supplies a precise mixture of air and fuel to the cylinders.

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