Aka, the dozer formerly known as the Cat D6K2. This medium size-class dozer ... and the D7 replaced the D7E and D7R. So, yes. The much-loved model at the heart of this discussion has a new name ...

Caterpillar increased the productivity of its D7-size dozers by incorporating electric drive components that increase operational efficiency. "The D7E is not only more powerful, it is much faster ...