The ST073903AV Replacement Filter Element is a 4-micron air filter cartridge for Campbell Hausfeld compressors, designed to trap dust and particulates before they reach the pump. This genuine Campbell Hausfeld part is listed as the replacement filter element for several models, including FP070000AV and the HS4000/HS222201AJ series, and it is sold as a single element per package. For best results, install this filter in compatible Campbell Hausfeld units to maintain clean airflow and protect compressor components from contamination.
