u'll have to get down close and inspect it. if u can't find anything on in in small stamping that says ford or oem then odds may have been replaced w/ a aftermarket one from autozone or advance auto. or if there is a distinct difference in the colors of the aluminum of the waterpump and the houseing on the motor. if the pump is brighter than it may have been replaced.but u can't be for sure about that. if u are mechanically inclined u can get a new one for $70 at AZ w/ a lifetime warranty and just go ahead and change it. i've done 3 of them for myself and friends.
