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Discussion Starter #1
All,

I've searched around a bit, but was unable to find the actual sizes... BMW P/N's were quoted, but not sizes.

Does anyone know what the actual oil cooler o-rings size is?

Looks like mine are weeping a bit, and wanted to replace them...
 

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Discussion Starter #3
Do you know if 13.4 is od or id?

Probably end up measuring parts and check calcs...
 

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At $1.72 each why bother? Just order them from your local dealer. Most dealers can get any part overnight'd without us paying for shipping.
 

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Discussion Starter #5
Because if they are nitrile/buna, however cheap they are is too expensive.

I would prefer viton, particularly Mil-83248-C1 if possible, as it will meet the temps and is formulated specifically for hot compression set resistance.
 
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