Hey guys, I need to replace a coil pack so I figured I might as well do all of them at once since they are getting fairly old. My question is do certain coil packs go to certain cylinders as in a numbering system? Or can you put any one of them on any cylinder?

 

The plug that goes to the pack is cylinder specific

 

Doesn't matter which go where. Same parts, some you just have to rotate so they line up with mounting hole.

Also, what makes you suspect you have a bad coil?