### Question
How does the law define certified engine configuration?


### Answer
Under *42 U.S.C. § 16131*, **certified engine configuration** is defined as:

> a new, rebuilt, or remanufactured engine configuration—


(A) that has been certified or verified by—


(i) the Administrator

#### Citation:
  - *42 U.S.C. § 16131*
  - Heading: **CHAPTER 149-NATIONAL ENERGY POLICY AND PROGRAMS > SUBCHAPTER VII-VEHICLES AND FUELS > Part F-Diesel Emissions Reduction**

