PART INFORMATION : AutoStar Germany For BMW BRAKE WEAR SENSOR FRONT LH F20/ F21/ F30/ 34356792289. BMW 1 Series 2016 Petrol Hatch 125i ActiveFlex RWD -- F21 1997cc 160KW 218HP N20 B20 A. BMW 1 Series 2015 Petrol Hatch 125i ActiveFlex RWD -- F21 1997cc 160KW 218HP N20 B20 A.