Use a coil set from the dealer.
The coil pack must be installed the same way it came from the manufacturer, b/c there is a heat sink function provided by the way it is installed. Sometimes diy’ers will do a “temporary” installation just to test it out, and that will cause the coil pack to overheat and quickly fail. Not saying that’s OP’s problem. Still OP should avoid any form of “temporary” installation method.