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The Supertech conical valve spring kit is specified for Toyota Supra (A90) and BMW B58B engines, providing matched conical springs for cylinder head valve assemblies. Sold as a kit tailored to those engine platforms, it supplies the spring components required for valve spring replacement or engine rebuilds where the B58B or A90 fitment is specified.
Supertech Toyota Supra (A90)/BMW B58B Conical Spring Kit
