I had to poke around a little and it is what I thought. These are imported by Lilland Global and the part number is SUDG-21. Rock Auto is out of stock and so is everywhere else. Bet EClassics doesn't have them in stock either.... But if they do, for $33, I'd chance it.
They might be imported and sold by someone else under another name too.
FWIW Lilland Global is an importer not far from here in East Syracuse Used to be a radiator shop, but it was bought by some Asian folks and they import and distribute parts. They don't make anything.