A GMB metal one. Go here and get it.

GMB Water pump

or go to Napa and get a Dura pro. The older Ford pumps with the black impellars are the ones with issue. Not sure if this was an issue on your car. If it's ealier than 99 they might have used the same material. Look for black pieces in the resevoir.

-'96 SE MTX 3L -'98 SVT 1,173 of 6,535 -'05 Mazda 6s, loaded, g/f's ride -Need a 96-00 manual on CD? PM or email me