I'm looking for the copper gaskets (washers) that go on either side of the banjo fitting to the brake master cylinder. According to the parts diagram these are part numbers:

904-355-904-00 (MC side)
904-355-902-00 (banjo outside)

I measure the old ones to be

*904-00 OD=0.740'' ID=0.400'' (roughly 3/4 x 3/8, or 19x10 mm)
*902-00 OD=0.750'' ID=0.495'' (roughly 3/4 x 1/2, or 19x13 mm)

I can't find these sizes anywhere. Does anyone know where to get equivalent replacements?

Thanks,

I'll bet those are still available thru Porsche. If not try McMaster-Carr or Bell Metrics.

dealer