The Carrier P502-C163S Liquid Line Filter Drier is a solid-core filtration component designed to remove moisture, acids, and contaminants from refrigerant circulating through HVAC systems. It uses a desiccant blend of activated alumina and molecular sieve to absorb harmful moisture while filtering particles before refrigerant reaches sensitive components. Featuring 3/8-inch ODF copper... https://www.partshnc.com/p502-c163s-carrier-38-liqlinedrier-c163s