Quote:
Originally Posted by C.Doner
When I did my ip gasket job on the euro the part numbers that i got from Phil,the dealer, and Bosch were all different. I measured them with my digital calipers and they were different by a couple of tenths of a mm in both ID and OD. I wouldn't use anything that wasnt from Bosch directly for euro versions. The Bosch service person told me that the gaskets for different engine groups may not be interchangable.
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I'd bet they are the same parts but variations in rubber molded o-rings would allow for a tolerance like that. The fact is that none of these are "custom made" they are stock metric o-rings and they are made to within 1MM sizes of varying thicknesses. A couple of tenths of a mm is just the dimensional tolerance of a rubber part.