Used item : Mercedes Signal Acquisition Module SAM REAR A1649007100 Delphi 28219522 

PREOWNED /USED OEM PART - good working condition, minor visible physical wear - does not impede on function (see images) 

Interchange: *Match P/N's (pictured) or will not Fit/work & may damage your motor, VIN PROGRAMMING REQUIRED*

***WILL ONLY REPLACE SAME PART ONLY, THIS IS NOT AN UPGRADE OR A RETROFIT PART, PLEASE MATCH YOUR PART NUMBERS TO ENSURE FIT ***

 All electronic items are marked with UV ink and or engraved