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)