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.
Dryer heating element. If the dryer does not heat check for a blown thermal fuse or thermal cut out. Heating elements will often have a break in the coil element if defective.
High limit thermostat, L225-40F
Three cycle timer
Timer kit with harness
Heating element kit with thermostat, thermal fuse and wires, 208 volts
Cycling thermostat, 5 terminals
Cyclcing thermostat, L153-15F 4 terminals