NEW Sonnax hardened sun gear shell for the 700R4, 4L60E, 4L65E, 4L70E, 4L75E
This item includes the hardened shell, made from thicker steel. The kit comes with a modified OEM roller clutch race to accept the torrington bearing. Bearing included. This is one of the main weak points in these transmissions and is becoming a very popular item to replace. With this new hardened unit, you will eliminate this potential problem. This unit is a must in high HP applications, but would be a nice upgrade for any use.
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