[Code of Federal Regulations] [Title 40, Volume 31] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR1051.5] [Page 614] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 1051_CONTROL OF EMISSIONS FROM RECREATIONAL ENGINES AND VEHICLES--Table of Contents Subpart A_Overview and Applicability Sec. 1051.5 Which engines are excluded from this part's requirements? (a) You may exclude vehicles with compression-ignition engines. See 40 CFR part 89 or 1039 for regulations that cover these engines. (b) We may require you to label an engine or vehicle (or both) if this section excludes it and other requirements in this chapter do not apply. [70 FR 40486, July 13, 2005]