These are reproductions of one of the most sought after parts in S&S history. So many restorers and custom builders have asked us to see if we could scrounge one of these covers for them, that we finally decided to make a limited run of them just to get some peace. The original tooling has been lost in the mists of time, so we reproduced the pattern and had these reproduction covers sand cast just like the originals. They are available only in an as-cast version, and it's really hard to tell them apart from the real deal. S&S Nostalgic Air Horn Cover fits L-Series carbs for Harley-Davidson motorcycles. S&S Part #: 17-0026