Section 38391.

Cal. Vehicle Code - VEH § 38391.
in effect
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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: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026

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