The Auburn E5-I-31-1 Spark Plug is a durable ignition component designed to deliver reliable spark performance for gas-fired HVAC heating equipment. It works by generating a controlled electrical spark to ignite the gas-air mixture, supporting efficient burner operation. Commonly used in furnaces, boilers, and commercial heating systems, it ensures consistent startup and steady flame ... https://www.partshnc.com/e5-i-31-1-auburn-auburn-spark-plug