oil filter1001555805 Engine Oil Filter / Filter Element – ​​Construction Machinery – Factory Direct Supply

A filter is a component that uses filter media (such as filter paper) to remove impurities from fluids or gases. In an automotive context, these are essential engine components. They are categorized by function into types such as oil filters, fuel filters (including gasoline filters, diesel filters, oil-water separators, and hydraulic filters), air filters, and cabin air filters. Engines typically utilize three types of filters—air, oil, and fuel—collectively known as the "three filters"; when the cabin air filter is included, the group is commonly referred to as the "four filters." These components are responsible for filtering media within the lubrication and combustion systems, as well as the engine intake air and the vehicle's cabin air circulation system. Filters serve as the first line of defense in vehicle maintenance and passenger protection; safeguarding the engine begins with the regular replacement of high-quality filters.