Ridex oil separator for Bmw x5 : Bmw x5 E53 : - 3.0d 6cyl 184hp phase 1 from 01/2000 to 09/2003 (engine code M57D30) This oil separator is the version with foam filter , so with maintenance a regular replacement every 30000kms is recommended by Bmw. Warning! Not suitable for 3.0D engine code m57d30tu.