
Available, however not legal in racing competition.
Briggs LO206 spark plug for competition is the Autolite AR3910x https://franklinkart.com/autolite-ar3910x-spark-plug/
Briggs LO206 spark plug for competition is the Autolite AR3910x https://franklinkart.com/autolite-ar3910x-spark-plug/
Champion Spark Plug
Available, however not legal in most competition races. Check rules if racing