Tried to remove the passenger-side splash guard while changing my belt. Only succeeded in breaking two of the pins holding it on. (I eventually decided to leave it in place and work from above.)

Anyone have a part number for these, or at least a picture of a non-destroyed one?

It'* a splash guard retainer clip. Not sure on the part number but you should be able to buy them at autozone or other auto parts stores.

Do you know what the hole diameter is? Seems like 3/8" to me, but Pep Boys also had 1/4" ones.

I can't say off the top of my head, but 3/8 seems a bit big.

Oh well, I'm sure I'll find some 3/8" holes that need retaining. Thanks again.