The Supertech titanium retainer for spring SPR‑M1007D (standard) is specified for a 6.5mm valve stem and offered in the standard configuration for that spring family. It secures the valve spring and keeper to maintain correct installed height and seat geometry, intended for valvetrain service or rebuilds where the standard SPR‑M1007D retainer is required.
Supertech Titanium Retainer for Spring SPR-M1007D 6.5mm Stem Standard