PPE Billet Input Shaft 17-19 GM 6.6L Duramax Allison

The transmission input shaft in your L5P Duramax is tasked with transferring the horsepower from the torque converter to the transmission. The input shaft needs to be tough because it is subjected to a huge amount of twisting torque. The PPE Billet Input Shaft has been specially designed to withstand higher horsepower and torque levels (over 800 RWHP) that come with high-performance engines or the added stress that comes with towing or racing.