Universal F10/F18 OE Replacement RH Ballast (MR031)Description OEM PART # 6311 7271 901 These modules are original equipment on specific BMW cars that come with factory LED headlights. Unfortunately, like most car parts, LED modules have a rated lifespan and sometimes don't even make it that long. Replacing them outside of warranty is never cheap either! This part usually runs about $400 from the dealership ouch! This replacement module is designed to meet exceed all OE specifications and will be a