i think u may be right on the color of the plastic impeller...when my waterpump was going (not completely gone but was leaking here and there causing me to go thru alot of water/coolant) the dealer replaced it since my car was covered under used car warr...i asked about them getting a metal impeller pump but that wasn't gonna happen...the service did tell me however that it was a better pump and mde of white plastic...if i can get another 70k on this one im happy...

99 expedition eddie bauer, 5.4 v8, k&n drop-in, 3" magnaflow catback and gas mileage that makes the contour look like a hybrid