BMW S58 Head Stud Thread Insert Kit 15633 and the removable lid with

and the removable lid with built-in screens helps keep debris and small hardware from falling into your fluid

Each assembly includes:

ARP rod bolts undergo thread rolling after heat treatment

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BMW S58 Head Stud Thread Insert Kit 15633 and the removable lid withThe BMW S58 Head Stud Thread Insert Kit provides your machine shop everything needed to repair or upgrade the engine block threads on BMW S58 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 S58 Head Stud Thread Insert Kit