Helicoil it or time-cert it. I dont
1) time cert part number:
0122a....shorter length insert is what you need and is specified by the "a"
2) Helicoil...dont have the part number for this, maybe someone can chime in
Time-cert is the better of the two, but more expensive and a tiny bit more involved(not much)
You will need to remove your pipe to acces the drain plug, but you can get it done on the side stand.