Section 27150.1.

Cal. Vehicle Code - VEH § 27150.1.
in effect
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No person engaged in a business that involves the selling of motor vehicle exhaust systems, or parts thereof, including, but not limited to, mufflers, shall offer for sale, sell, or install, a motor vehicle exhaust system, or part thereof, including, but not limited to, a muffler, unless it meets the regulations and standards applicable pursuant to this article. Motor vehicle exhaust systems or parts thereof include, but are not limited to, nonoriginal exhaust equipment. A violation of this section is a misdemeanor.
Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026

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