Ignition parts- which brand?

[AndWhyNot]

I've got a 2001 V40 T4 that's doing its best to resist being kept on the road.

Its history shows coils & plugs have been changed in last ~30k but some of the current issues I'm having suggest that coils certainly and plugs maybe worth changing.

I know the cars are very particular about having OE parts fitted but I haven't been able to find out who the maker is/ was.

Any pointers to find this info and avoid being back in the same position in another few months?

[E-bmw]

NGK are the only plugs I would ever use in any car.

As for coils, why not have a look at those fitted & see what they are, most likely Bosch if I were to guess.

[AndWhyNot]

Thanks

Plugs are less of a concern at this time, just trying to get the info ahead of when it's needed. Coils (well, one of them) seem to be the current problem, identified by switching the coils and watching the misfire follow. Previous owner or their garage has saved a couple of quid by fitting Cambiare which have failed prematurely, as seems to be typical on this model with anything that's non-OE.