This is a brand new T14A-16 Input shaft for a Jeep T14 Borg Warner transmission. It is 11-1/2" long, and has 20 teeth, left pitch, .590" dia pilot tip. It works in Jeeps that came with the Buick V6. This is a just-arrived aftermarket replacement gear, hard to find the last few years. Not to be confused with an inferior part offered by another supplier, these were custom made in Italy, and are the highest quality.