Symbols, acronyms, and abbreviations.

The following symbols, acronyms, and abbreviations apply to this part: $ U.S. dollars. CFR Code of Federal Regulations. disp engine displacement. EPA Environmental Protection Agency. kW kilowatt. L/cyl liters per cylinder. NARA National Archives and Records Administration. NO X Oxides of nitrogen. SAE Society of Automotive Engineers. SEA selective enforcement audit. U.S. United States. U.S.C. United States Code.