Alternator Bolt Size? - Bimmerfest - BMW Forums



Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 06-07-2017, 09:50 AM
ClutchTacos ClutchTacos is offline
Registered User
Location: Lancaster
 
Join Date: Jun 2017
Posts: 44
Mein Auto: 2000 Bmw 528i
Alternator Bolt Size?

I have a 00 528iA and I want to know what size volt is in the back of the 120amp Bosch alternator

Sent from my SM-G930V using Bimmerfest mobile app
Reply With Quote
Advertisement
  #2  
Old 06-07-2017, 10:00 AM
TX530i TX530i is offline
Registered User
Location: Cinco Ranch, TX
 
Join Date: Aug 2015
Posts: 75
Mein Auto: 2003 530i Sport, Tundra
http://www.realoem.com/

I don't know the bolt size, but this is a valuable resource. You should be able to find that bolt, its size and part number within your cars diagrams.
__________________
Reply With Quote
  #3  
Old 06-07-2017, 10:05 AM
TX530i TX530i is offline
Registered User
Location: Cinco Ranch, TX
 
Join Date: Aug 2015
Posts: 75
Mein Auto: 2003 530i Sport, Tundra
http://www.realoem.com/bmw/enUS/show...diagId=12_0657

Here are the two bolts in the diagram:

Hex bolt M10X125
Part Number 07119900630

Hex bolt with washer M10X125
Part Number 07119905523
__________________
Reply With Quote
  #4  
Old 06-07-2017, 10:28 AM
ClutchTacos ClutchTacos is offline
Registered User
Location: Lancaster
 
Join Date: Jun 2017
Posts: 44
Mein Auto: 2000 Bmw 528i
I'm talking about the bolt or screw in the back of the alternator where the positive lead is not the front

Sent from my SM-G930V using Bimmerfest mobile app
Reply With Quote
  #5  
Old 06-07-2017, 04:17 PM
mattmar1's Avatar
mattmar1 mattmar1 is online now
Wingnut
Location: Louisiana
 
Join Date: Dec 2014
Posts: 1,672
Mein Auto: 1999 5281 5 sp msport
take a quick run down to your local home center or auto parts store and match it up.
__________________
99 528i 5sp sport


be alert...the world needs more lerts
Reply With Quote
  #6  
Old 06-07-2017, 04:20 PM
ClutchTacos ClutchTacos is offline
Registered User
Location: Lancaster
 
Join Date: Jun 2017
Posts: 44
Mein Auto: 2000 Bmw 528i
I'm asking because I need to be able to take the bolt off because I'm replacing the alternator

Sent from my SM-G930V using Bimmerfest mobile app
Reply With Quote
  #7  
Old 06-07-2017, 06:55 PM
cn90 cn90 is offline
Officially Welcomed to the 'Fest
Location: Omaha NE
 
Join Date: Mar 2006
Posts: 14,351
Mein Auto: 1998 528i 5-sp 140K+
http://www.bimmerfest.com/forums/sho...d.php?t=414315
Reply With Quote
  #8  
Old 06-08-2017, 08:16 AM
crazy4trains's Avatar
crazy4trains crazy4trains is offline
Officially Welcomed to the 'Fest
Location: Milton, WV
 
Join Date: Mar 2011
Posts: 1,536
Mein Auto: 2002 530i Sport
Just go out there with your trusty socket set and throw a few different sockets on the nut. By the way, you need to remove a nut and not a bolt to remove the positive lead. It's probably somewhere between a 10 and 14 mm nut.
__________________
2002 530i
Reply With Quote
  #9  
Old 06-08-2017, 09:17 AM
ClutchTacos ClutchTacos is offline
Registered User
Location: Lancaster
 
Join Date: Jun 2017
Posts: 44
Mein Auto: 2000 Bmw 528i
Thank you cn90

Sent from my SM-G930V using Bimmerfest mobile app
Reply With Quote
  #10  
Old 06-08-2017, 09:44 AM
TX530i TX530i is offline
Registered User
Location: Cinco Ranch, TX
 
Join Date: Aug 2015
Posts: 75
Mein Auto: 2003 530i Sport, Tundra
Its 17mm
__________________
Reply With Quote
  #11  
Old 06-08-2017, 10:00 AM
crazy4trains's Avatar
crazy4trains crazy4trains is offline
Officially Welcomed to the 'Fest
Location: Milton, WV
 
Join Date: Mar 2011
Posts: 1,536
Mein Auto: 2002 530i Sport
Quote:
Originally Posted by TX530i View Post
Its 17mm
Or what he said.
__________________
2002 530i
Reply With Quote
  #12  
Old 06-08-2017, 11:07 AM
ClutchTacos ClutchTacos is offline
Registered User
Location: Lancaster
 
Join Date: Jun 2017
Posts: 44
Mein Auto: 2000 Bmw 528i
Mine was a 14mm

Sent from my SM-G930V using Bimmerfest mobile app
Reply With Quote
  #13  
Old 06-08-2017, 02:19 PM
TX530i TX530i is offline
Registered User
Location: Cinco Ranch, TX
 
Join Date: Aug 2015
Posts: 75
Mein Auto: 2003 530i Sport, Tundra
I installed mine last night and it had a plastic 17mm. Side note, I thought the nut might be metal with a plastic cover, but a magnet wouldn't stick to it.

The alternator is a 140 Amp, so I wonder if that makes a difference.
__________________
Reply With Quote
  #14  
Old 06-08-2017, 02:24 PM
ClutchTacos ClutchTacos is offline
Registered User
Location: Lancaster
 
Join Date: Jun 2017
Posts: 44
Mein Auto: 2000 Bmw 528i
Hmm I just took mine off 120 amp Bosch and it was 14mm haven't check the size of the new alternator

Sent from my SM-G930V using Bimmerfest mobile app
Reply With Quote
  #15  
Old 06-08-2017, 05:59 PM
cn90 cn90 is offline
Officially Welcomed to the 'Fest
Location: Omaha NE
 
Join Date: Mar 2006
Posts: 14,351
Mein Auto: 1998 528i 5-sp 140K+
This is funny b/c you guys are all over the place with alternator bolt sizes.
My 1998 528i alternator bolts are 16-mm type.

If you do a google search "m54 alternator diy bolts 16mm", then you will see the alternator bolts is 16mm.
Unless....something else is right...
Reply With Quote
Reply

See More Related BMW Stories


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 04:39 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms