USED ADAPTIVE DAMPING MODULE. SEE #1 OR #2 IN ILLUSTRATIONS (MODULE LOCATED IN DIFFERENT LOCATIONS IN THE VARIOUS MODELS!). FITS 1997-2006 XK8 XKR, 1998-2003 XJ8 XJR. **PLEASE BE SURE TO HAVE THE PART# OFF OF YOUR ORIGINAL UNIT & THE CODE OFF OF THE VCAT LABEL IN THE TRUNK!!** LJA1970AB00D LJA1970AC00D (LJA1970AC)