This is more high tech, expensive US MIC stuff which will be junk in the hands of the Ukes.
Abrams consume immense amounts of fuel and need a lot of support. They will drive to the front one time, where the will become stationary artillery for the Ukes, until the Russians find them and destroy them.
To believe that you’d have to believe the Ukrainians have not been trained to maintain them. You’re also ignoring thee fact that any major repairs usually mean pulling part, sending it back to depot and swapping in a replacement. No one does a transmission overhaul in the field.