web page
web page

I got my EGR parts from Car Quest at about 35 for a EGR valve for a 5.7 hemi while the dealer wanted 65.+ bucks for it. It's been in service now for 47K miles and no problems. So I'd say the one from the aftermarket are good enough?

Not saying I think it's the egr valve on your car, I have no idea really. Ours threw a code and I posted it here and was told it meant EGR which turned out to be right.

Did you check for codes if your car has them in 94?