Oil pressure switch O ring - what size?

[benji]

Hello all.

I think i've found the source of my leak https://www.aulro.com/afvb/images/imported/2013/03/268.jpg; but it seems a pain to get to https://www.aulro.com/afvb/images/imported/2013/03/269.jpg.

Does anyone know what size the oring is for the oil pressure switch; or even if it's metric or imperial.

I thought it was the sump for a while, and even the rear main seal (which havn't been ruled out); but at 2500rpm oil is pi@#ing out from the pressure switch.

Sorry; it's a GEMS if that matters.

Regards, Benji.

[PeterAllen]

You may need to replace the whole unit as I have seen references to faulty switches previously. I think the o ring is STC 3372 for Gems

[benji]

Awesome!
Thankyou so much, I should be able to chase that up.

[BusinessConnected]

I could never find/fit a Ring that would stop the leaks....
Replaced my Front Covers instead... fixed all the issues obviously...