Dryer gas burner valve solenoid set. If the dryer does not heat or heats intermittently the coils could be defective. To test, watch the burner and if the igniter glows for a while and then shuts off without the gas igniting, it usually means one of these coils is bad.
Gas dryer sensor for igniter and flame. The sensor is located across from the gas igniter at the dryer’s burner assembly. This flame sensor should be closed for continuity at room temperature. Check for continuity with a multi-meter before replacing.
Igniter (Bracket is no longer included.) If your old igniter was round you will need to order the bracket in the related parts below.