Ferrea dual valve spring set for BMW S54 engines, sold as a set of 24. These dual springs are specified for S54 valvetrains and serve as direct replacements during head service. The set is intended for cylinder head rebuilds, cam changes, or routine spring replacement where the dual-spring setup is required to restore correct valve control in S54 applications.
Ferrea BMW S54 Dual Valve Spring - Set of 24