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The ignition assembly tube is a component that directs the spark or flame to the burner in gas-fired heating equipment. It plays a key role in the ignition process, ensuring reliable startup. If the tube becomes cracked, blocked, or corroded, ignition performance can suffer. Replacing it with this ignition assembly tube restores proper flame delivery and helps maintain efficient combustion. This part is a common replacement in burner spare parts, suitable for various boiler and burner models.