Shift lever O-ring Size

[montmil]

I'm replacing a pesky, leaking shift lever shaft O-ring on the 1981 R65. Old seal out and new seal on hand.

My question concerns an O-ring I found mounted on the shifter shaft and located on the interior -trans side- face of the shift shaft lever. This O-ring is outside of the oil seal. I do not see this O-ring on the parts fiche. There is a machined recess on the shift shaft for the O-ring so my assumption is that it belongs there and is not a PO's idea of leak control.

Shift shaft is #4 in the diagram. The O-ring would be hidden from view in this drawing. Failing locating the exact size, I'll just mix n' match with my metric ring supply... hopefully.

http://www.realoem.com/bmw/showparts.do?model=0364&mospid=47851&btnr=23_0269&hg=23&fg=05


Gracias for any input.     Monte

[Bob_Roller]

There's no o-ring on the shifter shaft, just the oil seal that goes into the transmission case .

[montmil]

There's no o-ring on the shifter shaft, just the oil seal that goes into the transmission case .

Thanks, Bob. Than must be a PO's touch.