Screw plug for S54 head needed

[impulse!]

Hi everyone,

This week I am resurrecting an old project from 2017 because my parents are selling the house! (and it's long overdue)

When I got my engine back from the machine shop there were two screw plugs that I never got back, I've pointed it out in red in the image below. I ordered part #11127838066 and that turned out to be the one by the blue arrow and not the one I needed. I could not find these called out on realoem or any other info on them otherwise. A part number would be perfect but any info would be appreciated because these things are a show stopper right now.

[mrgizmo04]

Don't see any images. First post in 4 years, congrats!

Sent from my SM-S911U1 using Tapatalk

[impulse!]

Whoops! I added photos to the original post. I think the last time the car was running the old forum was still around.

[Slideways]

They could come with the entire head. You might need to find a pair from a bad cylinder head or call someone who services these cylinder heads regularly.

[bmwfnatic]

The S62 comes with a very similar looking plug at the back of the head. Don’t take this as the truth, just a suggestion!

https://www.realoem.com/bmw/enUS/showparts?id=DE91-EUR-10_1997_E39_BMW_M5&diagId=11_2650#11117545229

Part 16 in the diagram linked above.

[Slideways]

The S62 comes with a very similar looking plug at the back of the head. Don’t take this as the truth, just a suggestion!

https://www.realoem.com/bmw/enUS/showparts?id=DE91-EUR-10_1997_E39_BMW_M5&diagId=11_2650#11117545229

Part 16 in the diagram linked above.

Good find and worth a try. A part like this could be similar to the oil pressure relief valves found in the cams. BMW does not have a part number for those for the S54, but the S62 ones supposedly work on the S54 cams.

[impulse!]

Thanks for the suggestions, that S62 part isn't the one because M10 is going to be too small. I went to the hardware store to pick up some screws with different thread sizes and pitches to at least find out what thread I'm dealing with. The best fit was a M12x1.25 but it would start to get stuck after a few rotations. Monday morning I am going to make a few phone calls to shops that deal with s54 heads specifically, so hopefully I will have some useful information to share tomorrow.

[Ryan_R]

I have a pair of those. If you need them shoot me a message and I can get them out to you.

[eacmen]

Thanks for the suggestions, that S62 part isn't the one because M10 is going to be too small. I went to the hardware store to pick up some screws with different thread sizes and pitches to at least find out what thread I'm dealing with. The best fit was a M12x1.25 but it would start to get stuck after a few rotations. Monday morning I am going to make a few phone calls to shops that deal with s54 heads specifically, so hopefully I will have some useful information to share tomorrow.

oil drain plug is M12x1.5 maybe they used the same pitch here?