I'm switching to Mobil 1 5w30 synt.anyone know the factory oil filter part # to an 03-04 4.0L 4runner v6?? and also how many qt. does this baby take!

 

You can find the part number printed clearly on the outside of your oil filter, and the capacity is listed in your owner's manual.

I don't have one so I can't help you further, but that should help you find what you are looking for.

~ Fred