Monessen 55464 Pilot ODS Assembly is an aftermarket OEM equivalent replacement Natural Gas Pilot ODS Assembly and is rated for 5000 plus hours of operation. The Pilot ODS Oxygen Depletion System ODS assembly with integrated thermocouple and thermopile for appliances burning Natural Gas including Unvented, Vent-Free and Direct Vent fireplaces, gas logs, stoves, heaters, pedestal stoves and other similar appliances using Natural Gas for combustion. Single 900MM long life thermocouple wire. Protected flame inside the pilot burner to help protect against influences by air currents. 0.38 Built in Injector at approximately 166 W energy consumption. 750 MV Thermopile with Support and 24MM Leads Suitable for use Natural Gas only. Fail Safe Oxygen Depletion System 3/8 24 UNF 2Ao5 mm Gas Connection. M8 x 1 Thermocouple connection nut.