L322 L322 M62 Cabin heating issues

So I've had this issue for a while, though it's been less noticeable during summer.
Either way, with the thermometer moving south I need to sort it.

So yeah...
No (well, some) heat in the cabin. Coolant is recently changed, thermostat seems to be functioning as it should. So from what I've read the likely culprit of the matter is the heater control valve.
Seems reasonably easy to try out, either way.

Being a BMW in disguise I'm guessing there is a BMW-part number to be found? Maybe even a strict Bosch(?) article number?
Anyone knows?
Genuine LR-part seems (as ever) ridiculously expensive, so I'd rather not. And while there's someone on YT saying that the chinese parts are alright I'd also rather not.

Thanks in advance!

Never had an issue with my ebay heater control valves I'm sure iv posted the part number or ebay link when I did mine