: Companies like BMW use specific part numbers starting with 23 00 , such as specialized hex bolts or gasket rings
If you can tell me a bit more, I can find exactly what you need:
: In North American master specifications (CSI MasterFormat), Section 23 23 00 covers Refrigerant Piping . A "piece" in this context refers to specialized hardware like refrigerant split patterns or factory-coated fabrication parts.