I get all my dealer specific parts from
www.silverstatefordparts.com its a dealer in Nevada, fabulous prices and if its something they dont have , they will hunt it down at a dealer who does have it in stock at reasonable price and give you their number to save extra shipping , great folks.
I refuse to buy at the local dealers, they all charge 3 times list and more on everything . I dont care how much shipping is, by the time you figure in no tax and paying roughly 1/5 to 1/3 the price for the part , I come out WAYYY ahead ordering in. and it's not just the Ford dealers, it's all of them around here, except for , ironically, the Mercedes dealer that charges less than discount parts houses , even for items like factory filters over gumby brand filters. They REALLY know how to treat their customers ( and theres a LOT of old Mercedes running around this backwater in nice shape too)