Given the format, here are a few possibilities of what it could be, but none are confirmed without context:
While the full string matches media identifiers, the suffix (often prefixed with "K-") is a well-known model number for a specific kitchen fixture produced by Kohler . 1919gogo-5664 - 0
Below is a creatively constructed but plausible long-form article structured around the keyword as if it were a genuine artifact or identifier. Given the format, here are a few possibilities