Air filters are essential components within the engine air intake system of passenger cars and commercial vehicles. Located between the air intake and the throttle body, these filters prevent particulate contaminants like dust, pollen, and road debris from entering the engine, protecting critical internal components from premature wear. Maintaining a clean air filter ensures optimal engine performance, fuel efficiency, and exhaust emissions. These filters are constructed from pleated paper, synthetic fiber, or foam materials and are characterized by their filtration efficiency and airflow rate. Examples in this category include MAN air filter 51.08301-0016, Scania part number 2829529, and Hengst E428L01. Proper air filtration is a vital part of regular vehicle maintenance within the Engine Parts > Filters section.