Have you called main dealer parts?

My local are generally very helpful and will happily look at engine diagrams to find the parts and superceded part numbers. 2015 Range Rover Autobiography 4.4 SDV8

Hi Gary,

No. That's tomorrows mission ! I have the drawing showing it from the workshop manual which just gives an item Number but not a part number, so a main dealer should have the same, I hope !