Policy Position

SEMA works closely with the California Air Resources Board in an ongoing effort to ensure emissions related aftermarket parts meet applicable clean-air standards after parts have been installed in a vehicle.

Specifically, SEMA works with CARB to issue Executive Orders (EO), written documentations certifying aftermarket parts are emission compliant with CARB regulations. EOs effectively allow the legal sale and use of the product in all 50 states. Located in Diamond Bar, California, the SEMA Garage's Emissions Compliance Center is recognized by CARB as a Certification Ready Automotive Emissions Testing Laboratory. Integral to SEMA's work with CARB, it is a complete product development resource for manufacturers, providing SEMA members with assistance in all aspects of securing CARB and EPA emissions compliance to demonstrate that vehicles are emissions-compliant after a product is installed. SEMA opened a second garage in Detroit, Michigan in 2022 to support emissions compliance and product development.  

Over the last five years, SEMA has assisted with approximately 50% of all aftermarket EOs issued by CARB, and its compliance team has completed over 600 CARB EO applications for members. SEMA has invested over $25 million to help member companies and other aftermarket businesses to test and sell emissions compliant products.

SEMA has worked with the California State Legislature to secure additional funding for CARB to hire the staff necessary to expedite the processing of EOs, allowing emissions compliant products to be brought to market faster.


Learn More

Emissions Compliance Resources

SEMA Garage

Emissions Compliance One-Pager