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PATENT No. 6,561,944

This listing is for the authentic "Beast" Reengineered Reaction Sun gear Shell manufactured by Seal Aftermarket Products. "The Beast" corrects the weakness in the spline area of the original equipment design reaction sun gear shell. This fixes loss of reverse, 2nd and 4th gears.

Fitment for 4L60, 4L60E, 4L65E, 4L70E, TH700R4