How to replace the purge valve (fuel tank breather valve) on a BMW Z4 / E85 / E86 / E46 to correct p0444 (evaporative emission system purge control valve circuit open). NOTE: you want to first replace your gas cap or replace the gas cap O ring before spending the money on this part. That may solve your issue. For me it did not. I also had a P1447 DMTL code for which I made a separate video.
Part # 13 90 1 433 603