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GM 4L80/85-E Extreme Duty Input Shaft

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Input shaft failure is common in performance GM 4L80-E and 4L85-E units running with extreme horsepower. OE and aftermarket shafts simply don’t hold up in these conditions, leading to spline twist and shaft breakage. Recommended for applications above 1,000-hp, the Sonnax extreme duty input shaft (p/n 34670-02) is manufactured from high-strength Aermet steel alloy with proprietary heat treatment for unrivaled performance and durability.

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