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Mercedes Part Number BM vs SA

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Old Oct 24, 2022 | 01:15 AM
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2014 GL550; 2010 GL450
Mercedes Part Number BM vs SA
I'm looking for front Lower Bumper trim for my GL550 which seems to have two part numbers with significant difference in price.
  • Part number 166 855 66 25 (SA) is listed as Exchange Trim Bumper with a core charge
  • Part number 166 855 78 25 (BM) is listed as Lower Cover also with a core charge
Does anyone know what the (SA) vs (BM) mean and whether ordering the cheaper (SA) part will get me the same item?
I've attached pictures with the two part number stamped on the part





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Old Oct 29, 2022 | 05:08 AM
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2014 GL550; 2010 GL450
Bumping... Anyone with knowledge about BM vs SA parts designation or what the two different part numbers mean?
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