← Oklahoma driving laws›Exhaust & Muffler
Oklahoma Exhaust & Muffler Laws (2026)
Info: Your vehicle needs a muffler or other noise-suppressing system.
InfoVerified Jun 19, 2026
Your vehicle needs a muffler or other noise-suppressing system. A cutout or bypass (which routes exhaust around the muffler) is prohibited, and so is any exhaust change that's louder than the factory (OEM) setup. Oklahoma sets no fixed decibel limit (47 O.S. § 12-402).
General legal information, not legal advice — verify important decisions with a licensed attorney.
Don't get caught off guardGet a push the moment Oklahoma law changes — or when you cross into a state where it's different. Free.Get the free appLawLert is an independent app, not affiliated with any government — informational only, not legal advice. Verify with a licensed attorney in your jurisdiction.