The HPP December 2024 Transmission Parts Discount applies automatically once the part is added to the cart!!!!!
The SON-34322-01 is the Sonnax aftermarket heavy duty forward clutch hub for GM TH400, TH425, 4L80-E and 4L85-E applications. The hub is manufactured from a 1045 steel forging and features a thicker cross-section for increased strength. It is an ideal upgrade over an OE hub to add durability to daily drivers, work trucks and mild performance applications.
