ac pf52 filter without checkvalve?

[NICKG]

just bought a pf 52 and it does not appear yto have a check valve? what gives? i also noticed the" hecho in mexico" are these real ac parts?

 

[salvageV6]

Barely.

You gotta love NAFTA, NOT!

 

[BLACK6PACK]

I just put one in my car and did the blow through test. I didn't get any blowby.