Which injector is right?

[Cole94]

I'm looking at two...

And

They are on rockauto:
https://www.rockauto.com/en/catalog/ford,1994,explorer,4.0l+v6,1119631,fuel+&+air,fuel+injector,6224

Which is right? I've never had the injectors out, and I would like to not have to take it apart to see which one it is.
OR, are they both the same with minor design differences?

 

[410Fortune]

Top injector is new Ford or SMP
bottom injector is re manufactured "economy". The reman unit has a plastic cap on it for shipping
Otherwise same wiring, flow and fit

 

[Cole94]

Thank you. The blue cap threw me off.

 

[410Fortune]

That's what I figured!! You = smart to ask