How to identify a I head

[AnotherBm]

So i have an eta motor and am searching for an i head.

How do you identify an I head from all the rest. i dont want a seller to accidently sell me a eta head or w/e..

[reelizmpro]

Look for the last three digits "885" on the intake port side of the head. Oval intake ports, circular boss stamped "2.5" for early head and "2.5 / 2.7" for later 89 on up indicate an 885 head. Internally, it has dual valve springs and a "K" camshaft if it's out of a 325i. 88 Super ETA also has 885 head minus the dual springs and "K" camshaft. Should only read "2.5" since it was 88 only.