USED Electronic Control Module For Adaptive Cruise Control. See #1 In Illustration. This Part Is NOT Often Available USED, Thus Backordered, Because They All Get Water Damaged and/or Crash Damaged!! FITS 2004-2005 XJ8 VDP XJR up to VIN G34526 and 2003-2006 XK8 XKR and 2003-2005 Stype From VIN M45254. C2C17748 C2C13816 2W939AA12AA 2W939AA12BB C2C23960E 2W939AA12BD 2W939AA12BE (C2C23960)