Cal. Health & Safety Code § 43008

Except as provided by Sections 43100 and 43101 and Chapter 3 (commencing with Section 43600), all motor vehicles required pursuant to the National Emission Standards Act (42 U.S.C., Secs. 1857f-1 to 1857f-7, inclusive) and the standards and regulations promulgated thereunder, to be equipped with motor vehicle pollution control devices, shall be equipped with such devices required by that act.