I'm wondering if it matters if u get the pcv valve aftermarket from rockauto site pretty cheap and have the same part number as the Nissan dealer pcv valve which cost about 20 bucks where the aftermarket valve is 4 bucks? I have a 98 maxima with 74000 miles. I'm doing a tune up and im getting all the necessary parts on rockauto.

 

The ones from rockauto are just fine. But they are easy to clean IF it is plugged up, so you could save yourself a few bucks.

 

Agreed ...