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The GSC Power Division beehive valve spring and titanium retainer kit is specified for Toyota Supra and BMW Z4 B58 applications. This kit pairs beehive-profile valve springs with titanium retainers to provide the proper spring geometry and retainment for B58 cylinder heads. It serves as a direct-fit valvetrain kit for B58-equipped Supra and Z4 engines when replacing springs and retainers.
GSC P-D Toyota Supra/BMW Z4 B58 Beehive Valve Spring and Ti Retainer Kit
