i stated that it goes to the vacuum box, but what I see inside the black box is the air filter. Wrong connection?I recently bought a 1995 300D W124. I don't know what this part is so I can order it. I know I can get the info here. The car is hard shifting on all gears, could it be this? I see it goes tp the vacuum box, but it could be a wrong connection, I bought it like this.