Feature: Ignition Assembly: This gas pilot assembly has two 24 in parts (pilot tube, thermopile), a 22 in igniter wire and 16 in thermocouple. Equipped with a tube, heat-resistant wiring, and a sturdy bracket,it ensures corrosion-resistant, stable heating Flame Monitoring: Equipped with a sensitive thermocouple & thermopile, this fireplace gas pilot assembly continuously monitors flame conditions. If the flame is abnormally extinguished, the system cuts off the gas supply immediately, reducing gas leakage OEM Replacement Models: This natural gas fireplace pilot assembly strictly complies with OEM standards and can replace multiple original models, including 4021-732, 25660. It significantly improves operational efficiency and reliability Wide Compatibility: This gas pilot ignition assembly is compatible with most mainstream fireplaces. It not only fits the Heatilator fireplaces, but also fits home water heaters and kitchen stoves Easy Installation: With standard tubing diameters and wires, our fireplace pilot ignition assembly only needs to replace the old parts and install the new ones. Please shut off the gas before setup and check thoroughly after. Includes a one-year warranty Package Content: 1 x Gas Pilot Assembly 1 x User Manual