There are three o-rings used on the oil pressure switch ass'y (on most Zs:)
1 on the "Plug, oil pipe" P/N 670B2015 - 15mm]
1 under the "Oil Pipe" P/N 670B2018 - 18mm
1 on the oil pressure switch P/N 92055-055
(nil size given for this one in the IPB, but Partzilla and others give it as 19.5 X 1.5mm) - guess this is the one you need info on?
Current Project
1968 Norton P11A Desert Sled
Other bike (and daily ride)
2004 Yamaha FZR 600
Previous Bikes
78 Z1-R (resto)
91 Zephyr 750
73 Mach IV (Resto)
78 Z1-R
78 Z1-R (stolen)
76 Z900
76 Z650
73 Mach IV
72 Mach III
