Okla. Stat. tit. 47, § 47-12-423
This is the official text of Okla. Stat. tit. 47, § 47-12-423, part of Oklahoma’s Stat. tit. 47, — part of the compiled statutory law of Oklahoma, published by the state as "Stat. tit. 47,." Browse the sections below, each linked to its official government source.
Not legal advice. This page reproduces the official text of a government statute for reference only. Laws change, and how a statute applies depends on your specific facts. For advice about your situation, consult a licensed attorney in your state.
Emission control system - Disconnection, alteration,
Official statutory text
modification, or replacement.
A. On any motor vehicle originally designed and equipped with
an emission control system such system shall be maintained in good
working order.
Oklahoma Statutes - Title 47. Motor Vehicles Page 642
B. No person shall:
1. Disconnect any part of such system except temporarily in
order to make repairs, replacements, or adjustments;
2. Modify or alter such system or its operation in any manner;
or
3. Operate, and no owner shall cause or permit to be operated,
any motor vehicle originally equipped with such system while any
part of that system is known by the owner to be disconnected or
while that system or its operation is modified or altered in any
manner.
C. The provisions of this section shall not apply to any
disconnection, alteration, modification, or replacement of a nature
intended to increase effectiveness of the system in controlling the
emission of air pollutants.
A. On any motor vehicle originally designed and equipped with
an emission control system such system shall be maintained in good
working order.
Oklahoma Statutes - Title 47. Motor Vehicles Page 642
B. No person shall:
1. Disconnect any part of such system except temporarily in
order to make repairs, replacements, or adjustments;
2. Modify or alter such system or its operation in any manner;
or
3. Operate, and no owner shall cause or permit to be operated,
any motor vehicle originally equipped with such system while any
part of that system is known by the owner to be disconnected or
while that system or its operation is modified or altered in any
manner.
C. The provisions of this section shall not apply to any
disconnection, alteration, modification, or replacement of a nature
intended to increase effectiveness of the system in controlling the
emission of air pollutants.
Status: in_force · Read it on the official government site
Need a lawyer in Oklahoma?
Find a Oklahoma lawyer
About this page: Statute text is reproduced from official government publishers via the
Open US Law dataset
(Vaquill AI, snapshot v2026.08, CC BY 4.0). Primary legislative text like this is public domain under the government-edicts doctrine
(Georgia v. Public.Resource.Org, 2020). We link every section back to its official source so you can verify it independently.