This is very high quality and very correct second gear for the T-84 transmission. The T-84 is the correct transmission for the WWII jeep. This is second gear. These are almost always totally worn out, rusted stuck or missing teeth. Also, if the small teeth that mate up with the blocking ring are worn out the transmission will jump out of second. It is always a good idea tr replace second gear on a rebuild. Part Number WO638798.