CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 85—CONTROL OF AIR POLLUTION FROM MOBILE SOURCES > SUBPART V—Emissions Control System Performance Warranty Regulations and Voluntary Aftermarket Part Certification Program (§85.2101 to §85.2123) > 85.2112—Applicability.