Street Legal Headers by Doug Thorley

Street (CARB) Legal headers for the 4.0L V6 Xterras, Frontiers and Pathfinders is something that has been talked about for many years under the roof of Doug Thorley Headers. It never happened in the past with these particular headers. However, with the changes that have happened internally, Mike Johnson is now looking seriously at finally putting their Nissan 2005+ V6 Shorty headers through California testing.
Once this test is passed, all DTH-470-C headers would become street legal and all DTH-470-C headers manufactured moving forward would have a CARB street legal tag on them making them legal for street use and in smog tests.

If you have interest in these headers becoming steet legal, please reach out to Mike Johnson at Doug Thorley through any of the following avenues with your vehicles Year, Model and stating if you already have a set of headers or if you are looking to get a new set.
Phone: (800) 347-8664

Mike will also be needing a 2014 Frontier with a specific engine block code to get the testing done. A free set of headers will go to the owner of the proper test vehicle if used to complete the tests.
Please help spread the word about this. Tell your friends, post on forums and social media.
Thank you,
Steven Lutz
Rugged Rocks, LLC