The manual shift shafts in GM TH400 units become corroded in harsh environments and are not suitable for reuse, especially in remanufacturing. The Sonnax manual shift shaft kit is a direct replacement designed specifically to match the TH400 shaft geometry, which minimizes the amount of shift linkage adjustment necessary. The Sonnax manual shift shaft and fasteners have been yellow zinc plated to maximize corrosion resistance from road salt and other environmental contaminates. The flange face of the nuts is serrated for better holding capacity.
TH400 specific design minimizes amount of shift linkage adjustment necessary
Cost effective solution to OE late model manual shift shaft
Manual shift shaft and flange nuts are zinc plated for corrosion resistance
Fits GM TH400 units only.
Symptoms:
The manual shift shafts in GM TH400 units become corroded in harsh environments and are not suitable for reuse, especially in remanufacturing. The Sonnax manual shift shaft kit is a direct replacement designed specifically to match the TH400 shaft geometry, which minimizes the amount of shift linkage adjustment necessary. The Sonnax manual shift shaft and fasteners have been yellow zinc plated to maximize corrosion resistance from road salt and other environmental contaminates. The flange face of the nuts is serrated for better holding capacity.
Specifications:
SONNAX Installation Instructions