### Question
What does retrofit device mean?


### Answer
**Retrofit device** has the following meaning in *49 U.S.C. § 32918*:

> any component, equipment, or other device—


(1) that is designed to be installed in or on an automobile (as an addition to, as a replacement for, or through alteration or modification of, any original component, equipment, or other device)

#### Citation:
  - *49 U.S.C. § 32918*
  - Heading: **SUBTITLE VI-MOTOR VEHICLE AND DRIVER PROGRAMS > PART C-INFORMATION, STANDARDS, AND REQUIREMENTS > CHAPTER 329-AUTOMOBILE FUEL ECONOMY**

