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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 12-03-2014, 12:42 PM   #1
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Join Date: Nov 2010
Location: Cincinnati
Posts: 30
My Ride: '03 325i
"while you're at it" parts for intake manifold gasket replacement

Just in case someone plans to do this job soon:
I got into a conversation with Mike Speer at Pelican Parts about doing my intake manifold gasket.

It seems like e46 owners fall into two classes: those who have had vacuum leaks or bad gaskets, or those who will. So I decided that I'll do the intake manifold gasket, plus anything else under there that I don't ever want to look at again.

Since I'd already done the CCV last year, and the oil filter housing gasket recently, I left those parts off my list.

So here's the parts Mike came up with:

Intake gasket set 11-61-1-436-631-m30
throttle housing gasket 13-54-7-504-728-m30
vacuum hose 3.5x7.5mm 11-65-7-803-732-m9 (since I can't seem to find decent metric tubing at the local auto parts store)
sealing grommet for ICV 11-61-1-437-453-m30
Intake lower boot: 13-54-1-435-627-m36
water pipe under intake manf: 11053010705-210-m9
water pipe back of water pump 11-53-7-502-525-m9
vacuum nipple, 3.5mm 11-61-1-437-560-m16
vacuum nipple, 7mm 11-61-1-727-176-m9

About $200 worth of parts, but saving a thousand or so in labor.
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Old 12-03-2014, 12:52 PM   #2
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Join Date: Jan 2013
Location: California
Posts: 1,055
My Ride: '06 IR 330ci zhp
GAS Disa upgrade?
New starter?
Clean out ICV
Clean MAF
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Old 12-03-2014, 12:58 PM   #3
Zero. Leaks.
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Join Date: May 2008
Location: NYC
Posts: 23,684
My Ride: 2002 330i
Since you have the space

Alternator voltage regulator

Last edited by Solidjake; 12-03-2014 at 12:58 PM.
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Old 12-03-2014, 04:18 PM   #4
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Join Date: Aug 2012
Location: Riverside, CA
Posts: 1,109
My Ride: 325Ci 530i 750iL
More parts to replace

Air Distribution Manifold o-rings

DISA o-ring

Power steering reservoir

Air filter housing o-ring


Last edited by BaliDawg; 12-03-2014 at 04:38 PM.
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Old 12-03-2014, 10:37 PM   #5
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Join Date: Nov 2012
Location: Washington
Posts: 443
My Ride: 2000 328I sedan
I changed all of my injector and air distribution manifold o rings, I was surprised how bad they looked when I pulled the old ones out.

Here's some distribution manifold O-rings

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