SUBPART X—Determination of Model Year for Motor Vehicles and Engines Used in Motor Vehicles Under Section 177 and Part A of Title II of the Clean Air Act (§85.2301 to §85.2305)
- 85.2301—Applicability.
- 85.2302—Definition of model year.
- 85.2303—Duration of model year.
- 85.2304—Definition of production period.
- 85.2305—Duration and applicability of certificates of conformity.