XK8 / XKR 1996-2002 (all 4.0 V8 models). XJ8 / XJR 1997-2002 (all 3.2 and 4.0 V8 models). XJ6 / XJ12 / XJR 1994-1997 (all 3.2 and 4.0 models). ORIGINAL JAGUAR PART. This design of fuel cap was fitted to all pre-2000 models, however it is also suitable for later cars as follows.