Seller notes

4L60-E, 4L65-E, 4L70-E Heavy Duty Input Shaft Part No. 77733-11S Fits 300mm non-reluctor style units only. Input shaft failure is a common problem in GM 4L60-E, 4L65-E, 4L70-E units as power levels are increased. The Sonnax heavy duty input shaft 77773-11S for 300mm non-reluctor style units is ideal for any high-horsepower street or strip application. The shaft is manufactured from a specially heat treated steel with very hard outer layers and a more ductile inner core for strength and resistanc...

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