Alternator part # Apr 21, 2004 9:11:32 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Eric on Apr 21, 2004 9:11:32 GMT -5 For Trooper vehicles manufactured from 8/1997 to 8/1998, the alternator part number is F4000-137424. catalog.overnightautoparts.com/?year=1998&make=IS&imageField.x=54&imageField.y=11 $280.27 Remanufactured