Firewall DME Harness Grommet

[drum4fun27302]

Maybe this would work?

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F140938481527

[Codym42]

Is this what you guys are looking for? 51711972464 is the 52 mm grommet. Double check this diagram:

http://www.realoem.com/bmw/enUS/showparts?id=AF93-USA-04-1990-E30-BMW-318is&diagId=41_0167

I had considered buying a new one. But, at $24, I just cut a slit that came from the one in my m42 powered car. I also have an m3 firewall cover to go on. Hopefully water and wind noise doesn't come in.

[AllydNYC]

I'm still in need of a M20 grommet. Anyone?

[Klug]

I'd really be interested in seeing that e34 m50 DME box setup in the front.

I ended up cutting a m20 grommet, slid it over the harness then silicone'd it in with no issues. Granted I used that e36 or whatever firewall cover to cover it all up.

[ba114]

Ive got same issue. Toying with the idea of getting that expanding foam and just filling the hole with that but find a way to keep it nice and tidy. I mean really if you have completely rebuilt shit there shouldn't be a reason to ever remove it and it can easily be removed.

I'm looking at expanding foam too as i currently dont have anything and dont fancy water running down the wires into the dme...

[Northern]

Mine was slit in half to get on the 24v harness, but now I also ripped a big piece off.

I think some sort of generic grommet is the way to go.

Thinking about something like this:

https://www.mcmaster.com/#push-in-grommets/=15ucmg8

I would anticipate modification, which seems like a lot for ~$20.

Otherwise maybe stacking two sizes of these:

https://www.mcmaster.com/#push-in-grommets/=15ucoj9

[ThatOneEuroE30]

Ive got same issue. Toying with the idea of getting that expanding foam and just filling the hole with that but find a way to keep it nice and tidy. I mean really if you have completely rebuilt shit there shouldn't be a reason to ever remove it and it can easily be removed.

[ForcedFirebird]

Can't cut them. Gotta pull the pins out of the ECU connector and feed the bare wires through.

[Luke_M]

I used a cut M20 grommet but still had problems with water coming in the glovebox. I used some silicone and problem was solved. Probably not the best solution, especially with no grommet at all but it's has been fine for 3 years.

Bonus: In theory it should clean up with no damage to the paint to should I ever pull it out.

[nrubenstein]

The 24v dme plug is the same dimensions as the 318is, and similar width to the early model. The late model m20 connector is larger.

Roughly a 55mm hole in mine.

[ForcedFirebird]

I'll measure it today to confirm 100%. I can tell you that I've confirmed that the M50/S50 DME plug fits through in the same manner as a late model. Electrically, the M3 has a standard round C101.

The 24v dme plug is the same dimensions as the 318is, and similar width to the early model. The late model m20 connector is larger.

[nrubenstein]

I have early and late model. I was on the understanding the m3 is based on the 1985 chassis, they have a smaller hole. When swapping in a late model (iS engine) into an early model, the hole has to be opened up.

Would be great if you could verify, I have them.

I'll measure it today to confirm 100%. I can tell you that I've confirmed that the M50/S50 DME plug fits through in the same manner as a late model. Electrically, the M3 has a standard round C101.

[ForcedFirebird]

Normal round hole, same as any late model. Edit: IIRC, around 2" diameter.

I have early and late model. I was on the understanding the m3 is based on the 1985 chassis, they have a smaller hole. When swapping in a late model (iS engine) into an early model, the hole has to be opened up.

Would be great if you could verify, I have them.

[nrubenstein]

The m3 has the small hole in the firewall, like an early model, right?

Normal round hole, same as any late model. Edit: IIRC, around 2" diameter.

[GG///M3]

Sucks in a forum like this it's so hard to find pics with decent info. Fail


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