df["type_code"] = split_codes["type_code"] # M6, M8 df["auc_code"] = split_codes["auc_code"] # Auc, Btc df["serial_part"] = split_codes["serial_part"] # 4s0101
If you possess a physical item with this marking, follow these steps:
Extracted from 4s0101 →
: Often produced by HELLA (OEM) or directly as a genuine BMW part.
“M6 Auc 4s0101” is not a standard industry-wide phrase. It is almost certainly an . The most rational interpretation for a practical engineer or buyer is:
, though they note electrical items are typically non-returnable.
The three letters are unusual. They are not standard material codes (like “SS” for stainless steel or “AL” for aluminum). Possible interpretations: