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Old 01-17-2011, 12:41 PM
Graham E39 528i's Avatar
Graham E39 528i Graham E39 528i is offline
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Location: Camas, Washington
Join Date: Feb 2009
Posts: 206
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Mein Auto: BMW 760Li (2008)
This is what you do:
  • Get hold of the OEM o-ring
  • Measure the inside diameter (ID) & outside diameter (OD)
  • Try to establish whether the o-ring is SAE or metric
  • Match up the size with the sizes available on an engineering vendor site (like
  • If you want to use a different size or material, now is the time to decide
  • Order the o-rings

Piece of cake!


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