Quick Ship SKU #: VA1.375K VALAIR NV4500 1-3/8" Input Shaft Upgrade 94-03 Dodge 5.9L Cummins

If you're looking to add some rigidity to your NV4500 5 speed manual, this is a great upgrade. The factory input shaft is 1-1/4" diameter, but when Dodge switched to the NV5600 6 speeds, they switched to a 1-3/8" and for good reason. Further, many dual disc options require you to have the larger shaft.