Basic engine

Basic engine means a unique combination of manufacturer, engine displacement, number of cylinders, fuel system (as distinguished by number of carburetor barrels or use of fuel injection), catalyst usage, and other engine and emission control system characteristics specified by the Administrator.

Source

40 CFR § 86.082-2

Scoping language

The definitions of this section apply to this subpart and also to subparts B, D, I, and R of this part.