The Supertech spring seat locator for BMW M50, M52, M54 and S50, S52, S54 engines is a valve spring seating component intended for these engine families. It provides accurate spring positioning for compatible BMW heads and is offered as a replacement part to assist with valve train assembly and maintenance on M50–M54 and S50–S54 platforms.
Supertech Spring Seat Locator for BMW M50/M52/M54/S50/S52/S54