B Series B16 B18 B20 AC Fittings Adapters For Custom Line Air Conditioning A/CB Series B16 B18 B20 AC Fittings Adapters For Custom Line Air Conditioning These fittings are being sold so that the customer may create their own custom AC line tuck kit. Especially for customers that may have an RHD car! Includes all fittings necessary to successfully build your own tuck kit. Evaporator fitting adapters. Dryer fitting adapters. Condenser fitting adapters. Compressor fitting adapters. Rubber Grommets.