This fitting installs in the engine bay eliminating the HICAS solenoid and attaches the high pressure steering hose to the the hose attached to the steering fluid reservoir. Using this fitting will allow for the elimination of all of the fluid filled lines that run to the back of the car as part of the HICAS system on 1990-1993 TT models. This component is included with our HICAS Eliminator kit as a second option to the conventional fluid re-circulation banjo fitting that installs in the back f the car.