Scott,There is no "part number" that I know of. What you want is VW Bug or Buss window gasket material (not kit, as that already comes pre-cut which is what you DON'T want) and the locking strip. It should be vintage late '60s or early 70s as I recall. There is a special spreading tool to help insert the locking strip that I can photo for you and you would also need an angled awl to help guide it through. Another person to help would be needed too. There are YouTube videos on how to install it that help, but I didn't use the "string theory" system to help pull it through, the angled awl worked fine. My boat is a 1970 series 1 Vega. Hal