I need to replace two or three of the pink diaphrams on my '88 560sl. They are behind the instrument cluster and glove box... and control the vents.

Anyone know a good source for these? I tried to replace "only" the rubber valve-thinggy on my wife's 300e and it didn't work. Now I can't find the receipt to order the entire diaphram for my car.

By the way, I couldn't find them on the online catalog... here on this website.

Thanks!!
Michael B.