944s2cab Posted 4April, 2019 Report Share Posted 4April, 2019 After trying to find the O ring size for late one piece OPRV, (part no. 999 707 144 40) I bought a couple and took some measurements, so here for anyone looking for the info, here are the dimensions, OD 16mm ID 12.4mm Thickness 1.8mm after checking, there are two O ring sizes one which is correct, the other should be OK 1.78x12.42mm and 1.8x12.5mm Link to comment Share on other sites More sharing options...
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