I was thinking of getting some PIAA bulbs. Are the Fogs H13 as well?

 

The owners manual says 9145 bulbs.
Personally, I just took the whole assembly out and put in driving lights.

 

they are also known as h10

 

Keep the wattage down around stock or you will melt the housings. Those foglight housings are CHEEP.

 

Another reason why I no longer use them.

 

9145 / H10
They work fine for me. I've gotten flashed by other drivers and even cops when I used my foglights. FWIW I did not notice any hazing that other people have mentioned.

I'd very much prefer HIDs all around or LEDs if available. Incandescents and halogens should be all phased out by the next decade even for home applications.