Authentic Campbell Hausfeld ST073903AV replacement air intake filter element for Campbell Hausfeld compressors, including models HS4000 and HS222201AJ. The element uses paper media to trap dust and debris in the intake stream, helping protect the pump and maintain performance. It measures 4-3/8 inches in outer diameter, 3 inches in inner diameter, and 2-3/8 inches tall. The OEM replacement filter element ST073903AV is documented in Campbell Hausfeld parts catalogs as the replacement part for the air intake, confirming compatibility and correct fitment.
