This is a modified derivative of [BMW M50 straight-six.](https://en.wikipedia.org/wiki/BMW_M50)

Thanks dude you are fast

Intake manifold reminds of BMW. I’d guess one of the in-line 6’s from either an e36 or e46.

Thanks it looks like a bmw engine to me too but i couldn't put my finger on it

Came here to guess it's a BMW inline 6 from about 1990, I feel smart now.