badge:
An emblem with a manufacturer's name and/or logo on a plate to identify a model or component.
Also see
hood badge

badge engineering:
When a manufacturer sells two identical vehicles but the model names are different, he is badge engineering. For example, General Motors may sell a vehicle as a Chevrolet or a Pontiac where the only difference is the model name, logo, and more or less chrome or other minor alterations.

badging:
The tendency of a manufacturer to engage in badge engineering