The part that can MOST-Likely be used during transmission assembly to make reinstallation of the countershaft much easier is:

Question

Quizplus · Accepted Answer

A dummy shaft can be used during transmission assembly to hold the countershaft in place while the transmission is being reassembled. This can make the process much easier and prevent damage to the transmission. Bearings, countergear, and helical gear are all components of the transmission, but they do not specifically aid in the reinstallation of the countershaft.

The Part That Can MOST-Likely Be Used During Transmission Assembly