Piezo igniter and bracket
Grid is 1 inch square
AO Smith Water Heater Spark Electrode 100109221
AO Smith Water Heater Spark Electrode 100109221
Manufacturer Part

AO Smith Water Heater Spark Electrode 100109221

Genuine OEM Part # 100109221RC Item # 4582669Alternative Part Number(s)
Manufacturer Part
Piezo igniter and bracket
Grid is 1 inch square
AO Smith Water Heater Spark Electrode 100109221
AO Smith Water Heater Spark Electrode 100109221
$17.49
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Piezo igniter and bracket
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$17.49
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This part 100109221 is compatible with:

Product Type:
Water Heater
Brands:
AO Smith

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Frequently Bought with Spark Electrode
415-47845-05 Pilot
100108268 Thermocouple
B1282628S Gas Valve Assembly
279838 Heating Element

Spark Electrode Customer Reviews

Common Problems Fixed by the Spark Electrode

Based on customer reports and repair data, this part commonly fixes these issues:

About the Spark Electrode

Some water heaters use a spark electrode to light the pilot flame. The spark electrode sends intermittent high-voltage sparks to light the pilot. If the spark electrode won’t produce sparks, it is likely defective. If the spark electrode is defective, replace it.

Repair Help by Brands and Product Type

Alternative Part Number(s)

Replaces Part Number 9003410015
Replaces Part Number 100109222
Replaces Part Number 9003410