Subpart V - Emissions Control System Performance Warranty Regulations and Voluntary Aftermarket Part Certification Program Authority:Secs. 203, 207, 208, and 301(a), Clean Air Act, as amended (42 U.S.C. 7522, 7541, 7542, and 7601(a)). Source:45 FR 34839, May 22, 1980, unless otherwise noted.