Glossary of Auto Terms

DriverSide's Car Dictionary has the most comprehensive definitions of automotive terms. This auto glossary can help you decipher what your mechanic is fixing and what the purpose or function of the particular auto part or accessory is for. We have taken the mystery out of automotive service jargon, so that you don't have to.



The measurable restriction of exhaust gas flow through the exhaust system--picture a garden hose with a knot in it. Not good. Your main concern here is a clogged catalytic converter.

See Also:
Air Cleaner Intake
Air Filter
Fuel Filter
Exhaust Gases

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