1989 300te. There is a 'high pressure hose' that runs to the steel tubing back to the rear suspension. The 'high pressure hose' is in the front of the engine compartment. I need to find out the proper name / # of this part, as I am trying to find a used one. The one that is currently in my car was made at a shop and I believe it is the cause of a loud whinning sound as the engine revs....it is soooo annoying during highway driving. I want to p/u a used one to see if, in fact, it's the cause...a new one, I am told, is upwards of $200.