Omega Seamaster Quartz 196.0088 parts help

Hello! I'm trying to find the right parts to replace a lost or broken crown on a watch I bought this year. I took it to a shop to check the damage and they said I'd need a new crown, pipe and stem but they wouldn't be able to get the parts for me. From my own research, I've found the catalogue with the crown number in but I'm struggling to find the correct stem and pipe numbers. Any help is appreciated.

Catalogue here: https://www.cousinsuk.com/PDF/products/6347_Omega 196.0088 MD Case.pdf

Hello Matt,

The case tube is 090ST0193.