So a customer calls me on the phone....

Me to parts monkey: I need a ACDELCO D1906 ign module
Parts monkey: whats it for?
Me: Doesn't matter, need ACDELCO D1906
PM: I need to know the vehicle.
Me: 1964 Plymouth Valiant 170 CID slant six
PM: That car doesn't show up as using that part.
Me: I know that, that's why I gave you the part number.
PM: I need to Know the vehicle before I can find the part.
ME: HUH!!!!!!!
I too try to look up my own part numbers before I go. I have to drive to other towns to get to any part stores. My favorite is one of the o'reilly's where the guys know and help, real car guys, and that's where I go 99% of the time.