Econoride is a value air-spring brand built to OEM dimensions for direct, no-fuss replacement. We stock Econoride rolling-lobe, convoluted and cab/seat air springs (air bags) for Volvo VNL, Mack Twin-Y, Freightliner Cascadia, Kenworth, Peterbilt and International, plus common trailer suspensions. Cross-references include Firestone W01-358-series and Automann 566.ER numbers (for example, replaces A16-21077-001). Quality suspension air bags at an economy price, in stock and shipped same day.