My Kenmore 790.74139310 gas range was taking over 30 minutes to reach 350F. It used to take a little less than 10 minutes. The problem was the ignitor for the lower gas burner. It would glow but not pass sufficient current to increase the gas flow to the lower burner. Once at temperature, there is of course loss of heat when loading the oven with room temperature food. This took too long to recover, so we did not have proper temperature for proper cooking for the first 30 to 40 minutes. Food was under cooked. So, we needed a new ignitor. The part diagram for our unit shows two ignitors: a top broiler igniter (#26, 316489403) and a lower oven ignitor beneath the floor of the oven (#19, 5304506545 that replaces 316489404). But the description for #26 says it is 14" long and the description for #19 is 6" long. I could see that my lower oven ignitor had leads 14" long since they have to reach a connector under the unit and many AppliancePartsPros customers wrote that the leads on part number 5304506545 were too short. So, I purchased the broiler ignitor and it appears to be a direct replacement for my lower ignitor. It looks identical. It fits. It works as we have used the oven quite successfully several times since completing the repair. I believe this to be an error in the original manufacture's parts diagram and listing: the ignitor part numbers are reversed. The video for repair link for part #19 was exactly what we did for our repair, but we of course used part #26 as described above.