It appears that mine is soft to the touch. I figured rock hard and brittle at this point. So how long do they usually last or is it possible mine was replaced? I would like to R&R the intake, replace gaskets and those 8 seal rings. Not sure if I should order this part or not. Its not a cheap dealer part and I will only get MB rubber. Even Pelican has a lot rating on the one they stock.

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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car