A complete ADIP-type air dryer assembly with mounting brackets, rated 12V-90W, designed to remove moisture and contaminants from a truck's compressed air brake system before they reach and damage critical components. It includes serviceable components such as a desiccant cartridge kit, purge valves, a heater and thermostat kit, and a wire harness. It's a Bendix AD-IP style aftermarket replacement, cross-referenced to Bendix/OEM numbers 065612, 109465, and 109477.