New reverse idler for the Ford Type 3 single rail selector type gearbox as fitted to Cortina Mk2/Mk3/Mk4 and 1.6 Capri etc
The Ford Type 3 gearbox is getting old now and many have worn reverse idler gears. Wear on the teeth of this gear can cause the gearbox to jump out of reverse gear.
Check the reverse teeth on the 1/2 synchro hub as well.