Crafted with an aluminum shell and steel hub

The included high-grade steel retainers undergo meticulous CNC machining

every combination in this kit is used by professional engine builders and performance shops worldwide

Ideal for High-Performance Setups: Perfect for serious racers looking to get the most out of their BMW N20 engine

and S52 cylinder heads

BMW N63 Head Stud Thread Insert Kit Options:Inserts Only Crafted with an aluminum shellThe BMW N63 Head Stud Thread Insert Kit provides your machine shop everything needed to repair or upgrade the engine block threads on N63 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 N63 Head Stud Thread Insert Kit