Part is the Driver or Passenger Side Door Control Module Computer or ECM for a 1997 to Mid 2001 (To VIN A21852) Jaguar XK8 and XKR. It will NOT fit the XK8 built after VIN A21852. Jaguar Part Number is LJA2120AJ/XXX. Part carries a limited 30 day warranty - ALL SALES FINAL - NO REFUNDS EXCHANGE ONLY IF DEFECTIVE