COBB Tuning Products, LLC Settlement
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COBB Tuning Products, LLC Settles For $1,000,000
In August 2026, the California Air Resources Board (CARB) reached a settlement with COBB Tuning Products, LLC (COBB), with its principal location in Austin, Texas, for the company’s violations of CARB’s Add-On Parts and Modified Parts Regulation (Aftermarket Parts Regulation), under California Code of Regulations, title 13, section 2222, and Vehicle Code section 27156.
An investigation conducted by CARB staff revealed that COBB sold automotive aftermarket performance parts without legal exemptions from California’s anti‑tampering laws. Such parts replace or modify vehicle critical original equipment manufacturer (OEM) emissions control system components and OEM specified engine-operating conditions, and thus, must be evaluated by CARB to demonstrate the vehicle’s continued emissions compliance to qualify for legal exemption.
To settle the case, COBB agreed to the penalty of $1,000,000. The civil penalty amount of $821,397 will be deposited into CARB’s Air Pollution Control Fund, which provides funding for projects and research to improve California's air quality. The remaining amount of $178,603 will fund the Supplemental Environment Project (SEP) entitled, Cleaner Air Greener Schools Central California. The project will include the installation of indoor air quality sensors, air purifiers, and outdoor air quality sensors for 10 schools and 3 classrooms per school, for a total of 30 classrooms. The project will provide air pollution education for young people through a Sustainability Fundamentals workshop for 40 students per classroom, for a total of 1,200 students impacted directly, with many more impacted indirectly at the schools that are engaged.
COBB fully cooperated with CARB to resolve this matter, and has agreed to not sell, offer for sale, or advertise in California, any non-exempted aftermarket parts and to comply with all regulatory requirements.