Gas igniter
Replaces 304970
If it won't light, a weak igniter is the most common cause.
Gas sensor
Replaces 303377
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Drive belt
Replaces 211125
Belts stretch and crack with use. Squealing or slipping is the usual sign.
Roller w/bea
Replaces 303373
Thumping or squealing during a cycle points to worn rollers, pulleys or bearings.
Idler pulley
Replaces 303705
Thumping or squealing during a cycle points to worn rollers, pulleys or bearings.
Drum bearing kit
Thumping or squealing during a cycle points to worn rollers, pulleys or bearings.
1Gas igniter4391996
2Gas sensorWP338906
3Drive belt12112425
4Roller w/bea12001541Part numbers come from the Sears PartsDirect parts list for the Maytag LSG9900AAE (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
Inside the dryer door opening, or on the back panel.