These packing Air Piston O-Rings fits the High Performance HP-BC. They are also known to fit a much older HP-E model.
iwata Airbrush Conversion Kit 0.40 mm This convenient conversion kit will convert your iwata High Performance HP-C and HP-BC from the standard .30 mm to a larger .40 mm. The conversion kit includes the following parts: I-080-4 Fluid Nozzle 0.40...
iwata Airbrush Fluid Needle 0.20 mm fits the following models: High Performance Plus Series HP-A+ HP-B+ HP-SB+ High Performance HP-A Hi-Line HP-AH HP-BH Conversion option for: HP-CH
iwata Airbrush Fluid Needle 0.20 mm This 0.20 mm Fluid Needle fits the following models: High Performance HP-B HP-SB
iwata Airbrush Fluid Needle 0.30 mm Fits the following airbrush models: High Performance Series HP-C HP-BC Conversion option for: HP-BC2 High Performance Plus Series HP-C+ HP-BC+ Hi-Line Series HP-CH Conversion option for: HP-AH HP-BH Kustom Series K-CH