CAMPBELL ST073907AV Poly Filter Replacement

ST073907AV Poly Filter Replacement is a direct-replacement inlet air filter element engineered for Campbell Hausfeld and Powerex equipment. It fits common filter housings with a 4.38" outside diameter, 3" inside diameter, and about 4.75" overall height, and it captures particulates with a 5-micron filtration rating. The unit ships with a foam pre-filter wrap to extend element life by pre-clearing larger particles. As an OEM-equivalent replacement for the ST073907AV part number, it is intended to protect downstream compressors and blowers from dust and debris picked up at the intake, helping maintain efficiency and longevity of the unit. The ST073907AV replacement is widely sold as a Campbell Hausfeld/Powerex compatible part and is offered by aftermarket suppliers as a direct fit for models using this ST-number. For Powerex specifically, the ST073907AV is described as an inlet air filter element for enclosed scroll units such as OPT100 and OPT150 pumps.