Seems like such a simple thing, the O-ring at the base of the distributor.
I saved the original when i tore it down, it's the red one, feels like silicone rubber to me.
The Bosch distributor kit came with a new black one, with the classic high profile peak. I ordered one each aftermarket but the E -eurotrash sent 2 from the same aftermarket supplier (frustrating) I was trying to figure out ALL my options and they screwed me.
My OCD is paralyzed by choices like this.... Will the best part please step forward.
Does anyone know what Porsche is selling these days?? I would doubt that it's the red silicone anymore.
After much thought I put the Bosch "O-ring" on.... Good enough for the next 10 years.
EngiNerding