Oil filler cap O-ring?

ssokolich

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HI All,

My oil filler cap has a slight leak. Upon inspection I noticed there's no o-ring seal inside the cap. And it looks like it should have one. Does anyone know if it should? I've checked some BMW part sites for the diagram. And so far in the diagrams I've found I don't see an o-ring that is supposed to go into the cap.
 


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