[The Wog]

I believe the N62 is a DOHC engine, not sure it has "lifters".

That will come as news to a lot of people selling N62 lifters.

 

[The Wog]

Ok, I'm wrong.

I think direct DOHC on valve actuation is rare. It would be normal to interpose a hydraulic lash adjuster (ie upside down lifter). Having rockers is more unusual though. But thankfully they do - it makes BMWs about the easiest car to replace valve seals. They can be done without the massive hassle that comes with removing cams and chains.