Supertech’s valve springs deliver industry-leading quality

39 Position connector with terminals

Weighing in at 16

Car Only - A4

the TS-1 is designed to handle extreme EGTs and high boost with ease

BMW N54 Head Stud Thread Insert Kit 11 23 7 557 561 Supertech’s valve springs deliver industry-leadingThe BMW N54 Head Stud Thread Insert Kit provides your machine shop everything needed to repair or upgrade the engine block threads on BMW N54 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 N54 Head Stud Thread Insert Kit