Hey guys, does anyone know the original belt sizes / part #'s for the dual Alternator V-Belts on my 1983 300SD?

I'm asking because i replaced the alternator and the belts and one is tighter than the other, making me think that they are different sizes from each other and not the same size. When i replaced them I simply replaced them with the same # belt that was previously on them.

Your help is appreciated as i do not have any manuals or CD's etc.
Thanks in advance,

Adam

10 x 1037

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Thank You!
Fred
2009 ML350
2004 SL600
2004 SL500
1996 SL600
2002 SLK32
2005 CLK320 cabrio
2003 ML350
1997 C280 Sport

So... are BOTH belts the same size?

I installed new ones and the INTERIOR one is TIGHTER than the exterior one on the dual pulley. ?????

Yes, you should buy what's called a matched set.

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Thank You!
Fred
2009 ML350
2004 SL600
2004 SL500
1996 SL600
2002 SLK32
2005 CLK320 cabrio
2003 ML350
1997 C280 Sport

Which brand are you using? Some seem to fit better than others. Continental fit real nice.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Ya, what Hat said. I learned the hard way. Use Continetal. Belt problems go away.
Do not buy any American belts that "cross over" to the metric sizes; they don't.

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Thank You!
Fred
2009 ML350
2004 SL600
2004 SL500
1996 SL600
2002 SLK32
2005 CLK320 cabrio
2003 ML350
1997 C280 Sport

Well I used Gates on my SD, but they didn't fit right. I didn't care because I was selling it, but on a good car use Conti.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

So who carries Continental belts??

^^Online parts warehouses.

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83 SD

84 CD

Look above.

http://catalog.peachparts.com/ShopByVehicle.epc?q=&yearid=1983@@1983&makeid=63@@MERCEDES%2DBENZ@@63&modelid=6207@@300SD&catid=242346@@Drive+Belts&subcatid=242347@@Drive+Belts&applicationid=W0133-1715405&mode=PA

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1983 123.133 California
- GreaseCar Veg System

EXCELLENT! Thanks for the link! Thanks everyone for your help!

I ran across this same problem a few months ago. Gates brand, different batch numbers caused one to be longer than the other. If you bought them locally, and they have more in stock, look for comparable batch #'s.

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Sam

84 300SD 350K+ miles ( Blue Belle )

Check this link http://www.peachparts.com/shopforum/showthread.php?t=192846

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83 SD

84 CD