It includes genuine Neilsen CT3579 parts and is suitable for use on M40, M44, M50, and M52 models. M40 M44 M50 M52 M54 M56. M40 timing belt change.Valve timing of camshafts. Whether you're working on your own vehicle or providing a service for a friend, this BMW Timing Setting Locking Tool Set kit is an excellent choice.