Product review (5 stars): Perfect fit
Currently the kitchen in the house we bought in 2016 has a Jenn-Air electric cooktop, probably circa mid-1970s. The coils were warped and heated very unevenly. So, to make it possible to cook and not lose my sanity while we plan a kitchen remodel, we decided to find out if replacement coils existed for this ancient appliance. Whirlpool acquired Jenn-Air and indeed the parts exist. Luckily Amazon carries the 8 inch coil for our model; the low price was an added benefit. (Unluckily the 6 inch coils are not listed and we had to order them directly from Jenn-Airfor more than 4 times the price with shipping.)  Our Amazon order amazingly arrived in 2 days. The coils are a perfect fit and work as they should.