Product review (2 stars): Bad quality control?
Product failed during one load.  Lint screen, fan blades, and exhaust vents were cleaned out prior to install.  During test after failure, exhaust temperatures fluctuated between 115 and 146 oF.  Temperature at the thermal limiter location was 80oF while the dryer was running.  I don't know why this failed.
Seller doesn't take returns, which is understandable, considering the nature of the item.
I'm going to try buying from a different vendor in case this is a quality control issue with this vendor.

It's possible that it failed for legitimate reasons, but that doesn't appear to be the case.

Update: I purchased the same thing from a different supplier.  It came in identical packaging from Electrolux.  I did do some more work to make sure that it had good airflow: cleaned lint screen with scrub brush and soap, increased space behind dryer, and used brush to clean exterior dryer vent better.  This second replacement part has been working fine for a few weeks.
This Amazon supplier is a good value with fast shipping if the part is in fact legit.