The Ferrea single valve spring kit for 2015–2024 BMW S58 engines supplies a single-spring configuration intended for cylinder head valve-train service or replacement on S58-equipped vehicles. It is offered as a direct-fit spring kit for those model years and engine family when a single-spring setup is required. This kit targets replacement or refresh tasks within the S58 valve-train without altering other valve-train hardware.
Ferrea 15-24 BMW S58 Single Spring Kit