This newly made air cleaner pressure sensor is tailored for PC series excavators. It keeps checking pressure changes inside the air filter assembly all the time. It can timely remind operators of filter blockage issues to carry out cleaning or replacement work promptly. This part effectively protects engine intake systems and extends engine service life greatly. Adopting durable raw materials and fine sealing craft, it maintains stable performance in harsh working conditions. Produced per original technical standards, it owns high detection accuracy, easy installation and long service life for daily equipment maintenance.