Description Freightliner Receiver Drier Replaces OEM: A22-63994-001 Description: Receiver Drier Application: Freightliner Trucks Diameter: 4″ Length: 7″ Type: Block Style Inlet Size: Stat Seal #8 Outlet Size: Stat Seal #8 Material: Steel Refrigerant Type: R134a O-Ring #1: 0131 Note: Freightliner Coronado Reference Numbers 7566, 088645-00,  07-0621A, A22-63994-001