Vehicle Code section 38391


No person shall install, sell, offer for sale, or advertise any device, apparatus, or mechanism intended for use with, or as a part of, any required off-highway motor vehicle pollution control device or system which alters or modifies the original design or performance of any such motor vehicle pollution control device or system.

Source: Section 38391, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=VEH§ionNum=38391.­ (updated Jan. 1, 1976; accessed Jun. 9, 2025).

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Verified:
Jun. 9, 2025

§ 38391’s source at ca​.gov