New DPF coupling required

danb1979 · 12-08-2024, 10:16 AM

MOT came through fully clear; but they mentioned that there's a slight rattle on cold start when I went to collect it and it's the coupling on the DPF (the rattle stops once warm etc)

It's this part: 18308589078

https://www.ebay.co.uk/itm/264482683646

Is it welded in; or is it fitted with clamps does anyone know? What would be the best way to get it fitted?

Wondering if we just leave it for now and let it develop, if that makes sense?

ian332isport · 12-08-2024, 11:05 AM

That needs to be welded in. I wouldn't expect that coupling to cause a rattle though.

There's a flexible bellows inside that can split. This would certainly cause a leak and sound like a blowing exhaust.

un1eash · 12-08-2024, 11:47 AM

Depends which bit is rattling but sometimes putting a clamp around the mesh can stop the rattle.

3-GT · 12-08-2024, 12:34 PM

This might be helpful.

danb1979 · 12-08-2024, 01:49 PM

Cheers folks..

Think I'll let it develop for now and get it on the ramps in the New Year and see what it's doing

Simon89 · 12-09-2024, 04:28 AM

My wifes 116d has started blowing from this DPF flexi joint, something to sort out in 2025.

TurboWeasel · 12-13-2024, 02:40 PM

I saw that on RealOEM and thought surely it can't be clamped on for easy replacement, and I was right

As above, you could try putting a couple of jubilee clamps around it to crimp in the problem areas a bit, but if the noise goes when hot, probably leave it until it gets unbearable

12-08-2024, 10:16 AM	#1
danb1979 Permanently broken... 2624 Rep 2,776 Posts Drives: 2015 F31 325D M Sport touring Join Date: Feb 2022 Location: Preston, Lancashire - UK iTrader: (0)	New DPF coupling required - how is it fitted? MOT came through fully clear; but they mentioned that there's a slight rattle on cold start when I went to collect it and it's the coupling on the DPF (the rattle stops once warm etc) It's this part: 18308589078 https://www.ebay.co.uk/itm/264482683646 Is it welded in; or is it fitted with clamps does anyone know? What would be the best way to get it fitted? Wondering if we just leave it for now and let it develop, if that makes sense? __________________ My car: 2015 F31 325D M Sport Touring in Glacier Metallic Silver - Keeping it OEM 'Plus' Project: https://f30.bimmerpost.com/forums/sh....php?t=1982298
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12-08-2024, 11:05 AM	#2
ian332isport Major 716 Rep 1,158 Posts Drives: F31 340i Shadow Edition Join Date: Jun 2018 Location: UK iTrader: (0)	That needs to be welded in. I wouldn't expect that coupling to cause a rattle though. There's a flexible bellows inside that can split. This would certainly cause a leak and sound like a blowing exhaust.
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12-08-2024, 11:47 AM	#3
un1eash Major 545 Rep 1,066 Posts Drives: M235i Join Date: Jan 2015 Location: Midlands, UK iTrader: (0)	Depends which bit is rattling but sometimes putting a clamp around the mesh can stop the rattle.
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12-08-2024, 12:34 PM	#4
3-GT Lieutenant 356 Rep 605 Posts Drives: BMW 320d GT Join Date: Jun 2020 Location: Wales iTrader: (0)	This might be helpful. Attached Images
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12-08-2024, 01:49 PM	#5
danb1979 Permanently broken... 2624 Rep 2,776 Posts Drives: 2015 F31 325D M Sport touring Join Date: Feb 2022 Location: Preston, Lancashire - UK iTrader: (0)	Cheers folks.. Think I'll let it develop for now and get it on the ramps in the New Year and see what it's doing
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12-09-2024, 04:28 AM	#6
Simon89 First Lieutenant 127 Rep 354 Posts Drives: GLC43 Join Date: Oct 2018 Location: York iTrader: (0)	My wifes 116d has started blowing from this DPF flexi joint, something to sort out in 2025. __________________ Current: 16' X256 AMG GLC43 Previous: 13' F30 330D XDrive
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12-13-2024, 02:40 PM	#7
TurboWeasel Lieutenant Colonel 1317 Rep 1,651 Posts Drives: BMW 330D Join Date: Nov 2022 Location: UK iTrader: (0)	I saw that on RealOEM and thought surely it can't be clamped on for easy replacement, and I was right As above, you could try putting a couple of jubilee clamps around it to crimp in the problem areas a bit, but if the noise goes when hot, probably leave it until it gets unbearable
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