Hi everyone. I am looking for a left-hand valve cover for a 1994 Ford Ranger V6 4.0 liter engine. I would buy a very good used one or a new one. I can't seem to find one anywhere. Could someone please help me out?

 

They haven't made them since 1998, last 4.0l OHV was in 2000 Ranger

And they are thin steel so rusted out over the years, pretty much all of the "on-the-shelf" parts are gone to replace the rusted out ones, after 24 years
Wrecking yard is your best bet

All 1990-2000 4.0l OHV engines would use the same valve covers, that engine was used in Rangers, Mazda B4000s, Explorers and Aerostar vans

There can be slight differences in whats on the top of valve covers on each side, but they will all bolt to the head and seal it as that part never never changed

car-part.com
is a good place to search local wrecking yards for used parts