Cracked Ignition Coil

[bwdz]

That looks like installer error more than a part defect. It looks like the tear is from twisting so it was probably not seated properly and no dielectric grease used and it tore when tightening down.

[kk2002s]

My same question - are those the updated thicker body coil packs?
I replaced mine about a year ago with the thicker body type. I felt they never did seat well. I felt I could have continued to tighten the bolts but I stopped when they were sufficiently tight enough using handheld hex wrench

Now I think I need to pull them out and examine them

[stanigu]

Installer error is a definite possibility, since I was the one who did the work (late at night too, I might add). And Cylinder 4 is the one that is tucked away towards the front with that dang hose getting in the way.

They are indeed the new "thick" variety. I'm surprised that the car ran at all with that huge crack. The only noticeable problem with the performance was at low RPM at high load.