One of the weakest points of this transmission is the stock input shaft. At increased power levels, towing weight or in performance applications, the stock input shaft can break or twist. When this occurs, the transmission will lose movement and can damage the converter, pump and transmission. We recommends using an aftermarket ATS Diesel billet input with increased power and/or towing capacity/frequency to reduce down on the chance of transmission failure.
To avoid breakage ATS has released a vacuum-melted 300M chromoly steel version of the input shaft. This 300M super alloy material is an ultra-high-strength metal which supports vastly more power than the original or OEM input shaft. ATS provides this billet shaft with an unmatched production process where inputs are first machined, then splined and heat treated. ATS furthers quality by executing a finish machining process which ensures clean fitment and improved fatigue resistance.
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