This part is listed by BMW as BMW part number 11317542837 and is described as Chain Tensioner And Guide Rail for N54 twin turbo engine.
For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
BMW Fitments:
1 Series
E82 / E88 (08-13) > 135i N54 (08-10)
E82 / E88 (08-13) > 1M (11-12)
3 Series
E90 / E91 / E92 / E93 (06-13) > 335is N54
