Washer fluid reservoir filter

[Gooseacre]

I tried posting this in stock exchange but no joy yet.

I need to replace the smaller filter from the reservoir (the one for the headlight washers). The larger one (for the windscreen washers) is fine. I have found a picture on realoem but only for a reservoir that is at the front left of the engine bay behind the headlights. My s54 reservoir is at the back right. Is s50 and s54 different?

Might need to frig a homemade solution if I can't find one. My local stealer was going to call me back a week ago but has not yet!

[Southernboy]

A small piece of nylon tights makes a good filter...