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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 12-06-2015, 08:50 AM   #1
jrwestham
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Join Date: Dec 2015
Location: uk
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My Ride: e46 318i
E46 318i vaccuum pipes

Whilst under the bonnet of my e46 I noticed that these vacuum pipes are deteriorating not sure what they are for but can they be replaced?
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Old 12-06-2015, 10:41 AM   #2
kdp8604
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Join Date: Mar 2015
Location: illinois
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My Ride: 04 325i
I believe they are replaceable. A video on you tube from 50skid showed them behind the intake manifold. I don't have that on my 325i, but you should be able to just pull them off of there and put new vacuum line on.
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Old 12-11-2015, 01:40 AM   #3
SilberVogel
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My Ride: 2002 330Ci Conv.
^ Correct; they can definitely be replaced. Over time, those vacuum lines become brittle and start to crack, developing into one of the many sources for vacuum leaks.

Part number for that hose used is #11727545323: https://www.fcpeuro.com/products/bmw...rp-11747797175.

If you're looking for a substitute hose, inner diameter should be 3.5 mm and the outer diameter should be 7.5 mm (2 mm wall thickness).
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