Outfit your semi truck to be Ready for the Road Ahead with clean and reliable AC, with the Robinair A/C Recycling Spin-On Filter Dryer. Thanks to its direct connection to the high-pressure line, this replacement component is able to help filter refrigerant to remove contaminants such as dirt, debris, and metal. Crafted with specially-blended materials for maximum acid and moisture removal. FleetPride is your First Click in Heavy Duty .