Re: 91 MTX - there is a small "U" shaped water hose (5/8" dia.?) located approx. 4" to the right of the oil filter on the front of the engine. It exits and enters the block at fittings about an inch apart. Does anyone know the part number of this hose? I can't find it in any of my reference books. TIA Andy (Kris' husband) '91+ White '93 Ultra Red ATX