TCI Heavy-Duty Input Shaft and Drum Assemblies for 700R4/4L60E

The TCI Heavy-Duty Input Shaft and Drum Assembly is now available with anenhanced durability sun shell to deliver the ultimate in strength and performance. A commonproblem with 700R4 and 4L60E transmissions is damage to the sun shell and its inner gearingthrough harsh shifting or high torque conditions. Featuring a cryogenically treated input shaft#, the assembly also incorporates a specially processed heavy-duty drum with a steel reinforcement ring#, which is especially important for transmissions enhanced with raised line pressure to improve shift quality.