With VSR speed balancing and CFD-optimized housing geometry

5150 has the solution

Precision for Boosted N55 Builds

ensuring reliable performance in demanding racing environments

4 injector/ignition dual role pins

BMW B46 Head Stud Thread Insert Kit B28 With VSR speed balancing andThe BMW B46 Head Stud Thread Insert Kit provides your machine shop everything needed to repair or upgrade the engine block threads on B46 engines. Designed for precision and durability, this kit allows you to restore damaged threads or prepare the block for oversized head studs for improved clamping strength. Please note, this product does NOT include head studs. Head Studs are available for purchase here. Each BMW B46 Head Stud Thread Insert Kit