My car died a few times under heavy braking, and I think it might be a vacuum problem. I noticed that the check valve for the brake booster vaccum line is connected to one of the smaller lines w/ electrical tape. Turns out the extrusion that allows the smaller line to fit has been broken off. If there's a vaccum leak here, would it kill the car? The dealer wants $44 for the whole assembly, which I think is a little much, is there any aftermarket option that is cheaper. Right now, I just re-tape the whole area w/ 2x the electrical tape, we'll see if this helps.