OK, home from work and I see this thread... now to put you all out of your misery 
Yes it is OEM checker plate, but not the one for the post-07 Defender. After a few posts on UK forums it seems that most people have the checker plate from pre-07 Defenders fitted.
There are 3 differences in the checker plate kits:
1. Part number (Silver - the black is a different part)
(<07) STC7667
(>07) LR005230
2. Length. The pre-07 goes all the way back past the aerial, the post-07 stops short (and must also be a little narrower as the 07 bonnet is slightly wider - I've just discovered)
3. (Most importantly) The cost. Strangely the new model's costs a lot more and you get less
So because I got the pre-07 checker plate which needs a hole drilled near the A-piller and because the Mantec snorkel will hinder the drill access the checker plate goes on first, the snorkel second.
MY15 Discovery 4 SE SDV6
Past: 97 D1 Tdi, 03 D2a Td5, 08 Kimberley Kamper, 08 Defender 110 TDCi, 99 Defender 110 300Tdi[/SIZE]
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