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)