PIT Câmbio Automático

Sonnax 77733-51KA 4L60 4L60E 4L65E 4L70E Input Housing Overrun Sleeve Kit

The GM 4L60, 4L60-E, 4L65-E and 4L70-E input drum assembly is known to crack and strip out splines where the input shaft is pressed into it (where the overrun piston rides). Sonnax input housing overrun sleeve kit 77733-51KA includes a custom-manufactured overrun piston designed for use only with a stamped steel forward piston, eliminating the need to use aluminum forward pistons.