This sale is for an ECU from a 1998 Toyota Tacoma with a 4 cylinder 2.7L 3RZ-FE engine & automatic transmission. Part # on the ECU is 89661-04530. This may also fit Toyota Trucks, or other Toyota vehicles with the same engine. Please ensure your part number matches this one. This Particular ECU was removed from a good running 1998 Tacoma with 4wd. From my research this was used in 02/98 - 07/98 Production Tacomas. Please see "condition description" for further details.