HomeFeatured VehiclesSEMA Garage adds emissions certification program

SEMA Garage adds emissions certification program

Program designed to help gets aftermarket parts to market sooner


SEMA has expanded what it offers from its testing and certification garage to include certified emissions testing designed so automotive aftermarket product manufacturers can “meet the legal requirement for emissions compliance under the Environmental Protection Agency’s Tampering Policy.”  

The program verifies a product meets the EPA’s “reasonable basis” criteria and therefore is legal in 49 of the 50 states, the exception being California with its own California Air Resources Board Executive Order requirements.

“It’s now easier than ever for manufacturers to demonstrate emissions compliance,” said Mike Spagnola, SEMA vice president of original equipment and product development. “SEMA Certified-Emissions is a major accomplishment in accelerating a manufacturer’s ability to get products to market, and it paves the path to obtaining emissions compliance in all 50 states.”

SEMA noted that, “Since 2014, the SEMA Garage has been instrumental in helping automotive aftermarket parts manufacturers obtain CARB EOs. With state-of-the-art CARB-recognized testing equipment and dedicated expert staff conducting tests and assisting with the process, the SEMA Garage has helped secure more than 500 CARB EOs – over half of all performance parts EOs issued by CARB.”

SEMA added that it program helps products get to market in 49 states about three months before obtaining CARB certification. 

“This is a significant milestone in the industry’s ability to provide products to consumers,” added Peter Treydta, SEMA’s director of emissions compliance.

Larry Edsall
Larry Edsall
A former daily newspaper sports editor, Larry Edsall spent a dozen years as an editor at AutoWeek magazine before making the transition to writing for the web and becoming the author of more than 15 automotive books. In addition to being founding editor at, Larry has written for The New York Times and The Detroit News and was an adjunct honors professor at the Walter Cronkite School of Journalism and Mass Communication at Arizona State University.


  1. As long as the part has a CARB number it will be legal. SEMA seems to be about 50 years behind california regarding aftermarket performance parts


Please enter your comment!
Please enter your name here

Recent Posts