Another problem I've run into on the cheaper lock rings are not only the thinner gauge as stated but also a lack of the positive locking feature that the original rings have...Some repops only have the ramp-up to the end without the stop/notch to keep the ring in place...I've had one back off and spill fuel !!! Luckily the exhaust was far enough away on that car... Quanta has the better lock rings and seal if you need new parts...