Filters are automotive parts that purge a fluid or gas of pollutants, impurities, or undesired substances. Filters can include, among other things, oil filters, air intake filters, cabin, petrol filters, and transmission filters when referring to automobiles. These filters' job is to make sure that the oil, air, fuel, or transmission fluid going to the engine and other parts of the car is clean and free of contaminants. This helps the car last longer and operate better.