If I remember I replaced mine 2 yrs. ago, when I did my clutch. Its blue in color, and its an Internal type. Ford went to internal Slave cylinders about 1991 or so. I think you have to remove bell-housing. unless I cannot remember if there is an access hole. I do not think there is. Little spendy, got mine from Ford dealer, but glad I remembered to do it while I was in there.