Okay for anyone who needs to know, Ford doesn't sell internal parts for the fuel reg.. Parts were discontined in 2005 ( part # 9K061). Whole fuel reg is 380 bucks. Called IH and with some help found the repair kit with the spring, valve, seal and plug. Plug was different, used my old one. IH part number is 1830915C91 and cost $7.31 plus tax. Truck runs great, idles a bit higher at about 650 instead of 600 and doesn't stall when throttling down.:woot::woot: