Ford C4 26 Tooth to C6 30 Spline Transmission Torque Converter Adapter These Speedmaster main bearings are

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Ford C4 26 Tooth to C6 30 Spline Transmission Torque Converter Adapter These Speedmaster main bearings areSpeedmaster torque converter spline adapters are designed to adapt a C 6 torque converter to a C 4 26 spline transmission. They feature a 30 count outer spline to slide over the input shaft for a simple, quick, hassle free installation.