Firestone Level Command II Standard Duty Single Analog Air Compressor System Kit (WR17602158)Brand Firestone Part Number 2158 Category Suspension Air Compressor Systems Condition Brand New Original Manufacturer Packaging Firestone manufactures and provides air springs for all vehicles. We began developing air suspension for passenger cars and trucks more than 70 years ago. We continue to be innovative in product design, material selection and customer service so we can provide you with a better ride and safe load carrying capabilities.