i am changing the opti out and i read on the install page that i needed a new opti spark seal... wth is this? i didnt see any seals or ne thing come off, can i get one at an autozone or something???

 

just the seal that goes in the timing cover to keep oil from coming out

 

The opti seal is pressed into the timing cover, easy to replace, pop out old one, gently tap in new one. Definately replace it. Auto Zone sells the seal but in a kit, you have to buy the timing cover gasket kit, like $12-$15.