Boost pipe seals

BMW33 · 03-14-2023, 01:02 PM

Hi All,

Just a quick question, I'm looking to replace the rubber seals (o rings) on the boost pipes intercooler side and intake manifold, as I can see a slight weep of residue. Would any one happen to know their sizes? Are all three the same or different? Any one any experience with using aftermarket seals or is it best to stick with the genuine ones.

If anyone could point me in the right direction would massively be appreciated thankyou.

E90 lCI 325d 2011

adammcf · 03-24-2023, 05:06 AM

Best bet is to go genuine. I've changed mine a couple of times by looking up the part numbers on realoem and then ordering from CotswoldsBMW in the classified section.

You'll need to change the car below to your model -
https://www.realoem.com/bmw/enUS/par...6-E91-BMW-330d

Andy198712 · 03-24-2023, 06:15 AM

Does just replacing the seals work or is the pipe connection that wears?

adammcf · 03-27-2023, 04:36 AM

On mine it was just the seals. The pipes were as good as new after a cleanup. I did have to change my orange intercooler pipe once however as the extra boost my car is making split the connectors on mine.

Mo5inx · 03-30-2023, 02:51 PM

Had mine welded on my 335d at gkr. Been over a year now no leaks at all. Welding the ends is your best bet

03-14-2023, 01:02 PM	#1
BMW33 Private 5 Rep 90 Posts Drives: Bmw 3 series e90 Join Date: Jul 2016 Location: lancashire iTrader: (0)	Boost pipe seals Hi All, Just a quick question, I'm looking to replace the rubber seals (o rings) on the boost pipes intercooler side and intake manifold, as I can see a slight weep of residue. Would any one happen to know their sizes? Are all three the same or different? Any one any experience with using aftermarket seals or is it best to stick with the genuine ones. If anyone could point me in the right direction would massively be appreciated thankyou. E90 lCI 325d 2011
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03-24-2023, 05:06 AM	#2
adammcf Private First Class 18 Rep 193 Posts Drives: 330D Join Date: Jul 2016 Location: Northern Ireland iTrader: (0)	Best bet is to go genuine. I've changed mine a couple of times by looking up the part numbers on realoem and then ordering from CotswoldsBMW in the classified section. You'll need to change the car below to your model - https://www.realoem.com/bmw/enUS/par...6-E91-BMW-330d
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03-24-2023, 06:15 AM	#3
Andy198712 Major 145 Rep 1,009 Posts Drives: 2010 E91 325d Join Date: Mar 2017 Location: Cornwall iTrader: (0)	Does just replacing the seals work or is the pipe connection that wears?
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03-27-2023, 04:36 AM	#4
adammcf Private First Class 18 Rep 193 Posts Drives: 330D Join Date: Jul 2016 Location: Northern Ireland iTrader: (0)	On mine it was just the seals. The pipes were as good as new after a cleanup. I did have to change my orange intercooler pipe once however as the extra boost my car is making split the connectors on mine.
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03-30-2023, 02:51 PM	#5
Mo5inx New Member 10 Rep 26 Posts Drives: Bmw 330d m sport Join Date: Aug 2017 Location: Keighley iTrader: (0)	Had mine welded on my 335d at gkr. Been over a year now no leaks at all. Welding the ends is your best bet
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