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Thread: A/C belt 12.5 x 810

  1. #1
    Join Date
    Jul 2013
    Location
    CT
    Posts
    434
    My Cars
    1989 325i 4 Door 5sp

    A/C belt 12.5 x 810

    Have you all found these belts at local auto parts stores or is the size a german/beemer thing? Would prefer not to mail order just the belt...


    https://www.bavauto.com/bmw-belt-125x810
    Last edited by somecarguy; 06-11-2018 at 10:25 PM.

  2. #2
    Join Date
    Mar 2012
    Location
    Hopewell Junction, NY
    Posts
    2,639
    My Cars
    1987 325iS...edan
    If you're stuck, 12.5mm is about a half inch and 810mm is about 32 inches. My carquest gave me an XL Gates belt which-surprise-was too large. I ended up ordering the belt online with some other stuff.
    Interested in vintage cars? Ever thought about racing one?
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  3. #3
    Join Date
    Feb 2018
    Location
    Anderson SC
    Posts
    62
    My Cars
    2000 BMW 528i
    Not trying to hijack this thread, I subbed because I'm having issues with my ac belt. I have completely removed the adjuster bolt in order to get the most adjustment out of it but it's still not even close to going on. I pulled the belt sizes off of realoem, the alt belt and power steering both fit ok. The ad belt is a no go. Is there a different size I need?

    Sent from my SM-N920P using Tapatalk

  4. #4
    Join Date
    Jul 2013
    Location
    CT
    Posts
    434
    My Cars
    1989 325i 4 Door 5sp
    My owner's manual calls for 12.5x810 which is damn close to 1/2"x32" as mentioned above, which I just had NAPA order for me. Will pick up and install today, let you all know how it fits.

  5. #5
    Join Date
    Mar 2012
    Location
    Hopewell Junction, NY
    Posts
    2,639
    My Cars
    1987 325iS...edan
    Jamie, without being too blunt if the belt seems too small I'd research the next size up with the same width.
    Interested in vintage cars? Ever thought about racing one?
    Info, photos, videos, and more can be found at www.michaelsvintageracing.com!


    Elva Courier build thread here!

  6. #6
    Join Date
    Feb 2018
    Location
    Anderson SC
    Posts
    62
    My Cars
    2000 BMW 528i
    Quote Originally Posted by ELVA164 View Post
    Jamie, without being too blunt if the belt seems too small I'd research the next size up with the same width.
    Thanks, I guess I'm going to go and buy a longer belt. I think I've pulled all of the adjustment I can pull out of it. It's still way too short.

    Sent from my SM-N920P using Tapatalk

  7. #7
    Join Date
    May 2010
    Location
    Officially in Tampa
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    2,137
    My Cars
    87 Cabrio & 87 ETA
    With so many of our cars having replacement compressors it's quite common to need a non standard belt. Most parts stores and certainly any import part specialty store will carry belts in metric sizes. Each size is about 10mm from the next and that's usually enough to get the belt on and tight even if you have to lever it on with a screw driver
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