560 intake boot below
 

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.