Igniter
If the oven won't light, a weak igniter is the most common cause.
Sensor
Replaces 8273902
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Door gasket
Replaces 8522416
Leaks, a torn edge or a door that won't seal mean it's time for a new one.
Igniter
If the oven won't light, a weak igniter is the most common cause.
Spark module
Replaces 9758080
If the oven won't light, a weak igniter is the most common cause.
1IgniterWP9758079
2SensorWPW10181986
3Door gasketW11542153Part numbers come from the Sears PartsDirect parts list for the Whirlpool SF378LEPS1 (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.
Where the model number is
Open the oven door or pull out the storage drawer: the plate is on the frame. Some models: behind the kick panel.