Genuine BMW Repair Kit Piston Rings (+0.50) - 11251437054 - This repair kit contains genuine BMW piston rings for a variety of BMW models. It is a direct replacement for the original BMW part number 11251437054. The kit includes all the necessary components to replace the piston rings, including the piston rings themselves, the piston pin and the circlip. This kit is designed to provide a long-lasting and reliable repair to your BMW engine.