Blind and Can't Count!

[84 332i]

Recently I purchased a cylinder head for an S52 Block. I checked Real OEM and it looks like to me the part numbers should be something like 11121703637 or maybe 11121740003. These two numbers I chose at random from several 3.2 or 3.0 liter possibilities (I think). I can't seem to confirm nor find the part number on the head I bought. All I have found on my head is number (1738400) that I can't match to Real OEM's numbers. Also at the front of my head it has (2.5). Is this a 2.5 liter head? 3.0 head? 3.2 head? These numbers just don't add up to me. What have I got? what am I missing? Am I looking in the wrong place or what? I'm really lost here! Please help! :help

[Tronix]

I believe on the intake side of the head there is one sensor port for OBD I 3.0 and two sensor ports for OBD II 3.2.

[JETninja]

The head for all M50/S50/M52/S52 engines are the same except for that sensor port. It's the valves/cams etc that make up the differences....

[84 332i]

Ok!, So what have I got? Where on this head do I find the part number? :dunno Also Does the 2.5 number on the intake side front mean this is a 2.5L head?

I still need some help here. Can anyone confirm what I have? Please!?

[ParadigmGuy]

That's the casting number for an M50/M52 head.

[uzi e30]

I looking for 11121703637 head .
How can I know for sure that this is what I'm looking for ?

on the head have a namber 1738400

thank you