Some hints on eBay searching

Remember that MB parts in EPC are listed in the form Axxx xxx xx xx

However people on eBay may or may not follow that format

So you want to also try xxx-xxx-xx-xx and also xxxxxxxxxx (all ten digits in one string with no space or dash)

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech