Dear Forum,
2005 XJ8L - What size to replace the two O-Rings within the Fuel Line Connector at the Injector Rail, please?
Regards,
Ray

 

If they are not damaged and are nitrile rings, I would re-use them. I have done that in the past on multiple vehicles w/o issues. If I can avoid reusing them I do, but sometimes its near impossible to find exact replacements in a timely fashion.

If it is damaged, I would go to an online supplier, such as Gaudin, and look through their expanded diagrams and see if the carry the o-rings you are looking for. I have gone this route as well successfully - drawback is that your car sits for a week minimum while you wait for parts to show up.