Sad picture of broken plastic parts. Unpack the repair kit with the parts you need. I found it on ebay under "Jaguar S-Type headlight adjuster 1999-2007". It contains 10 little parts. Most of those parts will be broken on your headlight. However, I did not use those 4 "sprockets: in the kit, as my old ones were not broken and I could not see how to replace them anyway. But those other 6 parts where utterly broken on my headlight, while other white plastic parts were perfectly OK.