Need Help!!! s52 valve guides

[Wasefi]

So I took my s52 cylinder head to a Rob's Auto Machine in Hayward, which is a well known machine shop. I wanted to use Genuine BMW parts(Valve Guides/Stem Seals), so I call up a buddy of mine who happens to be a tech at BMW to help me out with parts and we discover that BMW has 3 different parts numbers but no specs on the actual parts. Has anybody else experienced this??

[MyE30]

i believe there is only one size available for the valve guides; however, i could be wrong. i know there are 3 sizes of valves for intake and exhaust: standard, oversized, +oversized. below are the standard intake and exhaust valve part numbers:

Intake valve: 11341739822
Exhaust valve: 11341739823

Don't quote me though. Check realoem.com, i'm sure there is some good info there.

[f4tj0n]

My head is over there as well. Hopefully I'll have mine back soon!

[Wasefi]

My head is over there as well. Hopefully I'll have mine back soon!

I could order the valve guides from BMW, but I did get the stem seals from bmw.