NHTSA
CNG Tank Valve Stem may Eject from Valve Body
If the knob is overtightened, the valve retaining snap ring may fail and eject from the valve body, increasing the risk to injury to any person in it's path. Additionally, the unintended release of CNG can increase the risk of a fire.
A-1 will notify owners, and dealers will double the snap ring strength, free of charge. Owner notification letters were mailed March 5, 2019. Owners may contact A-1 customer service at 1-559-485-4427.