Product review (5 stars): quality part: the cheap is only in the price
I bought this March 3rd, 2014 for five-dot-twenty and, as of this writing, they are keeping my ancient clothes dryer going strong (except for the igniter I just replaced, but that's another part).

The hard bit is determining that this is the part that will fix your dryer problem. For me, upon starting the dryer, I could see the glow of the igniter from the back (when that was working), but then it would just fade away and nothing would light. That symptom makes this part a good candidate. In contrast, when nothing glowed recently, these coils were not my problem; I replaced the igniter and now it all still works with these 10 month old coils.

When I bought these, this was the cheapest price I found, and by quite a bit if I remember; I think most other prices were fifteen and up. So I took a gamble and figured, if these cheapos failed, then at least I didn't lose much and I'll just get the higher priced ones. Fortunately, my gamble paid off and these coils have proven themselves worthy for months, even at this low price.

SUMMARY:
diagnosis: hard (at least if you've never come across this problem before)
taking apart the dryer: a little hard, mostly time-consuming; YouTube videos helped a lot
replacing this part: SUPER SIMPLE!
putting the dryer back together: a little harder (you'll probably need at least a little help getting the belt back on the drum)
DONE! Saved hundreds in paying a service tech or getting a new dryer!