The Denso 2W93-AA fuel injectors on my '06 XK8 has a plastic retainer ring for the top O ring; the one that goes into the fuel rail.
I broke several of these; the kit I got does not includes them.
I have searched a little, but no luck, and not exactly sure what to call these retainer rings....other than retainer rings.
Anyone happen to know what these are called and where I can get a set of eight??

Thanks.