This driver works better than the part number. LED power = brightness No errors, no interference Transient voltage protection Consumes 3 less current This part is Plug And Play (Does not require cutting and soldering like other parts) This is an improved replacement LED driver board (LED chip) for 2011 to 2017 X3 Inner and Outer Led Tail Lights This will replace faulty b003809.2 LED driver. FITS for ALL X3 F25 vehicles with LEDs in rear tail lights Condition: New Other part number: b003809.2 Fitment Type: Direct Replacement Placement on Vehicle: Rear, Left, Right, Inner, Outer Voltage: 12W Power: 3W Manufacturer Part Number: b003809.2 63217217305,63217217306,63217217309,63217217310,63217217311,63217217312,63217217313,63217217314 100% Plug-n-Play: the driver has a socket One driver fits either inner or outer light Color: black Material: Metal + Plastic Package Contents: 2 x Led Tail Light Driver Chip Board Only the above package content, others are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.