Freeze plug heater troubles?

[custm86]

I purchased a freeze plug heater from napa, installed it, and drove for about two hours. It then promptly popped out of place and spewed coolant all over the engine bay.
When I look up heaters all of the part numbers are different sizes from what everyone on here recommends. When i look up the 41mm freeze plug, it doesnt say it supports the 6.2. Should i just buy it because it is the correct one?

 

[custm86]

anyone?

 

[tamecrow]

I purchased a freeze plug heater from napa, installed it, and drove for about two hours. It then promptly popped out of place and spewed coolant all over the engine bay.
When I look up heaters all of the part numbers are different sizes from what everyone on here recommends. When i look up the 41mm freeze plug, it doesnt say it supports the 6.2. Should i just buy it because it is the correct one?

What size was the one that popped out?

 

[rnd-motorsports]

I have installed several I use kats freeze plug heaters part# 10612 or #11612 the 11612 has a removable wire plug that is the dif in the 2 good luck!