§ 612. Sale.

No person engaged in a business that involves the selling of exhaust systems or parts shall sell or offer for sale an exhaust system or part that has not been certified by the exhaust system manufacturer or supplier in accordance with Article 11 of this title, beginning with Section 1050. This provision applies only to such systems or parts to be used on vehicles specified in Section 611.

(a) Identification Markings. All sound-modifying exhaust system parts, such as mufflers, resonators, chambered pipes, flare tips, and taper tips, sold or offered for sale after the operative dates in Section 611 shall be marked as required in Section 1054 of this title.

(b) Parts Not Required to Be Marked or Certified. Catalytic converters, manifolds, and nonchambered exhaust, tail pipes and tail pipe extensions that do not increase the noise may be sold or installed by any person without being marked or separately certified.