E39 (520d, 520i M52, 520i M54, 523i, 525d, 525i, 525tds, 528i, 530d, 530i, 540i). You don't need to follow the first 4 digits of the BMW part code because they only show the head and subcategory. THE LAST 7 SYMBOLS OR NUMBERS OF THE PART CODE ARE IMPORTANT.