The door cards are falling off my dad's X300. I've dealt with this on my car so it should be easy, but those little plastic bush things (called "Panel Grommet Studs" by Jaguar) are causing me some confusion:



The parts manual identifies it as "AGU2388J" (and "KZC100007" is the piece that fits into it):



So I was poised to order a set of full set of AGU2388J, when I decided to double check with my own order for years ago and saw:

16 DOOR TRIM CLIP PN:KZC100007 @ £0.33 each
16 INTERIOR TRIM BUSH PN:KZV100010 @ £0.72 each

KZV100010 is another, very similar plastic trim bush. It's pictured as white (not translucent) and the head is more curved than the example in my photo above.

British parts (where I purchased them from) list both KZV100010 and AGU2388J as X300 parts. KZV100010 is listed specifically as "Door Casing interior bush", while AGU2388J is "Interior Exterior Fixing Bush".

Now I don't know which ones to get. Evidently, I used KZV100010 on my car, probably inadvertently, but they've worked fine. Lifting door cards are a common X300 problem, and the original bushes never held that well. Is KZV100010 an improved revision or something?