I am trying to purchase the anti roll bar and 5 other parts that are needed, but I the part numbers I received from the Jag dealer aren't comming up on any of the Jag part websites.

Here are the numbers:
xr82657 Bar-anti roll
xr819697 insulator
xr81834 Bracket-A/Roll B
xr855185 Link-Anti Roll
xr848057 Nut Flange

Any help would be appreciated.
JohnG

 

Those are the correct part numbers.
Search them on www.jaguarparts.com and you will find them.