This is the Original Sound Amplifier. This Unit is in Good used condition, see photo. OEM part numbers: 65125A48219 ; For: 1 F40 2 F44 3 G20 G21 X3 G01 - check with the part number, maybe it fits on other Cars. Please, make sure that it is an item for your model, before buying! COMPATIBILITY IS ONLY A GUIDE. If you are unsure if the part fits your vehicle, please contact us with your vehicle details, and we can confirm fitment.