E12 fan clutch inside sleeve diameter

E28 technical advice asked and given! Troubleshooting, modifications and more.
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buzby
Posts: 466
Joined: Feb 10, 2009 8:21 PM
Location: Auburn, CA

E12 fan clutch inside sleeve diameter

Post by buzby »

Understand not E28 related but I am asking if anyone has one of these fan clutches laying around, BMW PN 11521260459.

I need the inside diameter of the bearing sleeve. Checking out part number cross reference in the after market and looks like this will also fit my Triumph Stag. Beck/Arnley 130-0052.

The Stag inside bearing sleeve is 15/16".

Fan clutch also fits E23, E9, E24 (early) and E3.

Will purchase a genuine BMW one if it will fit. If someone has one and can take photos of each side (has to be a BMW one) that will help. Want to confirm that the BMW one has a machined boss for the fan on the side that does not have the angled fins.

Thanks.

Dave
Last edited by buzby on Sep 04, 2011 9:21 AM, edited 1 time in total.
Mike W.
Posts: 27200
Joined: Feb 12, 2006 12:00 PM
Location: California Whine Country

Post by Mike W. »

The early bolt on fan clutch? They never came on E21's, but on M30 BMWs from about 73 -79, plus later E23s. I've got 3 or 4 of them, I'll try to take some measurements and pics tomorrow.
buzby
Posts: 466
Joined: Feb 10, 2009 8:21 PM
Location: Auburn, CA

Post by buzby »

Yes, the bolt on fan clutch.

Thanks for checking.

E-mail pics to dave_stringer@att.net
buzby
Posts: 466
Joined: Feb 10, 2009 8:21 PM
Location: Auburn, CA

Post by buzby »

Mike,

Thanks for pointing that out about the E21, changed to E12, slight typo error.

Here is the list of models that this PN fits.

http://www.realoem.com/bmw/partxref.do?part=11521260459

Dave
Mike W.
Posts: 27200
Joined: Feb 12, 2006 12:00 PM
Location: California Whine Country

Post by Mike W. »

Depending on what I measured, and things are a slip fit, not a press fit, I came up with dimensions ranging from .932-.938. Or right around 15/16. Which it's closer to than any standard metric size. I only got a pic from one side, but I do also have the hub and washer pictured which should give you a little more idea of what it looks like.

Image

In a shameless plug, I would be more than happy to sell one of my collection if you're interested, $35 shipped for the clutch alone, or $45 for the clutch, hub and washer.
buzby
Posts: 466
Joined: Feb 10, 2009 8:21 PM
Location: Auburn, CA

Post by buzby »

Hi Mike,

The sleeve ID is the same, thanks for checking.

Need a picture of the other side of the coupling if at all possible?

Thanks,

Dave
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