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Old 12-06-2012, 10:33 AM
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Jason5driver Jason5driver is offline
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Join Date: May 2007
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Mein Auto: E39 hamster w/ pin-wheel
Originally Posted by Dnormand View Post
I purchased a CCV kit for my 2001 BMW 525i. Installing it, for a moderately experienced DIYer, was a bit frustrating. I was able to find 3 video segments on Youtube that did a good job of providing step by step (look up M54 Crankcase ventilation). I have 2 issues for the forum - one a question and the other a comment/suggestion.

The new oil separator(OS) has a small port that was unplugged upon receiving it. Official BMW records say that port is "required" for my model year car. My old OS is not have it so I am thinking just plug it up. What should I do and if needed where does it bloody connect to?

In order to connect the breather hose (valve cover to OS) I used a heat gun to soften the OS side due to it being very stiff. I actually broke the first OS trying to connect this one. (urrrrgggg!) Sometimes these aftermarket kits require a little finagling right?

Responses appreciated. Here is what I am talking about.
#6 in the diagram is plugged in the newer I6 face-lifted E39 models (525i, and 530i).
The vacuum hose at #6 is ONLY used on the older I6 E39 models, (ex. 528i's).

Save your money and just get the Cold Weather CCV version as a kit, and buy the (2) additional hoses needed.

You should also buy the New Oil dipstick tube as well...

Link to different parts...

Link to my thread:

Link to Cold Weather CCV kit at (BMW Dealer in Peabody, Mass. - best price I have found for the kit):

Another great place to purchase parts (another BMW dealer, but in Ohio):

Originally Posted by Mark@EAC View Post
Ok now check this out.
http://bmwfans***91;/img] ******** LINK B...oil_separator/

You can see now that the "kit" is made up of numbers 1,2 and 3.

To complete the "kit" to include all insulated hoses you would need:
11 61 7 532 629 Vent hose (insulated)
11 61 7 504 536 Return Pipe (insulated)
which are numbers 4 and 7 in the diagram I posted above.

If memory serves me correctly you do not need part 6 on a 5 series.

That does not apply to the e39 and there is no place to plug it into the CCV.

Thanks guys!

Last edited by Jason5driver; 12-06-2012 at 10:49 AM.
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