WTEC (II & III) Load Box (NOTE: Used for "bench" recalibration of WTEC II, WTEC III, 1000/2000 TCMs (Pre-Allison 4th Generation Controls), and Allison 4th/5th/6th Generation Controls).
Contains an updated power supply which includes international connectors. It is not required to replace an existing 42455-A with 42455-B. Includes power supply.