Man I really dont know, I think just under the transmission or to the side of it. I went to a shop that Harry@ZTuner works out of a few months back and they put it up on the lift and he said "You're having clutch pedal issues due to a clip missing from right here". I guess it just holds the line in place so it doesnt kink and prevent pressure. My pedal is a BITCH sometimes to push in.