so i went to change out my radiator no the 2004 sti, when i realized that it has no cap to it. am i missing something here. i am confused as to what is going on with this. so is their suppose be no cap. or is it just like that
I'd send it back and get the right one. The stock system is designed with 2 caps and 2 vent tubes to the resevoir. The bugeyes only have one vent since there is only the cap on the resevoir attached to the manifold. You'll end up leaking coolant once it gets warm unless you plug the second line. Won't be much but over time it will be noticable.