Talking about the rubber flaps that slide in a slot inside the door window opening to seal and wipe your side windows and prevent rattling.
I've replaced these on a couple of AD trucks, always with extreme difficulty - or in the case of my current panel truck I wasn't able to get them in at all. I thought, no way were factory assemblymen going through this much hassle to install these! Now I find that many vendors are selling generic extruded rubber seals that bear no resemblance to originals. What many are selling has a T-shaped base. When I chiseled my old rubbers out, they had a Y-shaped base.
I did some research and found that Classic Parts sells the original-style y-shaped seal. And at $5.95 it's not like they're expensive. I bought some and they slip right in effortlessly. If you're replacing your window sweeps do yourself a favor and get this type.
Below is a photo profile of the original style, Classic Industries style, and the generic style that most places sell. Notice how huge the t-style base is; no way will it fit in the door slot without extreme measures!
