Product review (5 stars): It works!
My Kenmore Elite gas dryer wasn't heating.  After looking at videos and repair guides and suggestions online, I replaced the fuse, the igniter, and the high limit thermostat,  and none of those solved the problem.  The igniter still didn't light up.  I checked the flame sensor for continuity and that was fine.  Finally, I saw in the repair manual that came with the dryer that there was also a heater relay in the circuit.  Once I found that part on the dryer, I realized there was also a motor relay, and they were the exact same model.  I swapped the two and the igniter worked (I had to hold down the start button because now the motor didn't stay running).  I ordered this relay, installed it, and now I have a working dryer again.  I wish I had started with this part, but at least it's fixed!